TY  - JOUR
AU  - Prvanović, Aleksandar
AU  - Marić, Nenad
AU  - Nikić, Zoran
PY  - 2022
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/1321
AB  - Prostorna karakterizacija zagađenja je ključna komponenta bilo kog remedijacionog pristupa. U poređenju sa konvencionalnim metodama istraživanja, fluorescencija indukovana laserskim zracenjem (LIF) je brža i omogućava trenutnu detekciju naftnog zagađenja. Ovo istraživanje je izvedeno na industrijskoj lokaciji zagađenoj naftnim ugljovodonicima u Pensilvaniji, SAD. Prisustvo "lake" faze zagađenja (LNAPL - dizel) je potvrđeno u 6 od 17 bušotina, lociranih duž rova u kojem je cev za odvod kišnice, sa intenzitetom LIF signala u rasponu između 45% i 225% (procenat referentnog emitera). LIF sistem je omogućio precizno definisanje dubine LNAPL faze omogućivši uvid u protostorni raspored zagađenja. Rezultati su ukazali da ne postoji značajan "rezervoar" LNAPL duž ispitivanog profila, isključivši mogućnost da pomenuti rov za odvod kišnice predstavlja glavni pravac migracije zagađenja. Sveukupno, dobijeni rezultati doprineli su karakterizaciji i remedijaciji ove industrijske lokacije.
AB  - Spatial characterization of the contamination is a fundamental component of any remediation approach. Compared to conventional investigation methods, the laser-induced fluorescence (LIF) is a faster screening tool and provides the detection of hydrocarbon contamination in real-time. This investigation was conducted at a hydrocarbon-contaminated site in Pennsylvania, US. The presence of light nonaqueous-phase liquids (LNAPL) was detected in 6 of 17 LIF borings, with the reference emitter responses ranging between 45% and 225%. The depth of the response was highly accurate and valuable and provided insight into the spatial distribution of contamination. The results indicated that no substantial amount of LNAPL existed along the LIF borings profile, thus excluding this area as a preferential LNAPL migration pathway. The obtained results contributed to the characterization and remediation of this industrial site.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Materials Protection
T1  - Upotreba fluorescencije indukovane laserskim zračenjem (LIF) kao metode u Sjedinjenim Američkim Državama
T1  - Use of laser-induced fluorescence method in characterization of the site contaminated by petroleum hydrocarbons in United States
EP  - 127
IS  - 2
SP  - 122
VL  - 63
DO  - 10.5937/zasmat2202122P
UR  - conv_1915
ER  - 

@article{
author = "Prvanović, Aleksandar and Marić, Nenad and Nikić, Zoran",
year = "2022",
abstract = "Prostorna karakterizacija zagađenja je ključna komponenta bilo kog remedijacionog pristupa. U poređenju sa konvencionalnim metodama istraživanja, fluorescencija indukovana laserskim zracenjem (LIF) je brža i omogućava trenutnu detekciju naftnog zagađenja. Ovo istraživanje je izvedeno na industrijskoj lokaciji zagađenoj naftnim ugljovodonicima u Pensilvaniji, SAD. Prisustvo "lake" faze zagađenja (LNAPL - dizel) je potvrđeno u 6 od 17 bušotina, lociranih duž rova u kojem je cev za odvod kišnice, sa intenzitetom LIF signala u rasponu između 45% i 225% (procenat referentnog emitera). LIF sistem je omogućio precizno definisanje dubine LNAPL faze omogućivši uvid u protostorni raspored zagađenja. Rezultati su ukazali da ne postoji značajan "rezervoar" LNAPL duž ispitivanog profila, isključivši mogućnost da pomenuti rov za odvod kišnice predstavlja glavni pravac migracije zagađenja. Sveukupno, dobijeni rezultati doprineli su karakterizaciji i remedijaciji ove industrijske lokacije., Spatial characterization of the contamination is a fundamental component of any remediation approach. Compared to conventional investigation methods, the laser-induced fluorescence (LIF) is a faster screening tool and provides the detection of hydrocarbon contamination in real-time. This investigation was conducted at a hydrocarbon-contaminated site in Pennsylvania, US. The presence of light nonaqueous-phase liquids (LNAPL) was detected in 6 of 17 LIF borings, with the reference emitter responses ranging between 45% and 225%. The depth of the response was highly accurate and valuable and provided insight into the spatial distribution of contamination. The results indicated that no substantial amount of LNAPL existed along the LIF borings profile, thus excluding this area as a preferential LNAPL migration pathway. The obtained results contributed to the characterization and remediation of this industrial site.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Materials Protection",
title = "Upotreba fluorescencije indukovane laserskim zračenjem (LIF) kao metode u Sjedinjenim Američkim Državama, Use of laser-induced fluorescence method in characterization of the site contaminated by petroleum hydrocarbons in United States",
pages = "127-122",
number = "2",
volume = "63",
doi = "10.5937/zasmat2202122P",
url = "conv_1915"
}

Prvanović, A., Marić, N.,& Nikić, Z.. (2022). Upotreba fluorescencije indukovane laserskim zračenjem (LIF) kao metode u Sjedinjenim Američkim Državama. in Materials Protection
Inženjersko društvo za koroziju, Beograd., 63(2), 122-127.
https://doi.org/10.5937/zasmat2202122P
conv_1915

Prvanović A, Marić N, Nikić Z. Upotreba fluorescencije indukovane laserskim zračenjem (LIF) kao metode u Sjedinjenim Američkim Državama. in Materials Protection. 2022;63(2):122-127.
doi:10.5937/zasmat2202122P
conv_1915 .

Prvanović, Aleksandar, Marić, Nenad, Nikić, Zoran, "Upotreba fluorescencije indukovane laserskim zračenjem (LIF) kao metode u Sjedinjenim Američkim Državama" in Materials Protection, 63, no. 2 (2022):122-127,
https://doi.org/10.5937/zasmat2202122P .,
conv_1915 .

TY  - JOUR
AU  - Marić, Nenad
AU  - Strbacki, Jana
AU  - Mrazovac Kurilić, Sanja
AU  - Beskoski, Vladimir P.
AU  - Nikić, Zoran
AU  - Ignjatović, Snežana
AU  - Malbasić, Jovana
PY  - 2020
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/1123
AB  - Aquifer contamination by petroleum hydrocarbons leads to measurable changes of groundwater hydrochemistry, primarily due to the microbiological activity. This study analyzes this phenomenon at an historical kerosene-contaminated site in Vitanovac (central Serbia). Due to the long-term hydrocarbon contamination and exposure to aerobic and anaerobic biodegradation mechanisms, the lowest concentrations of O-2, NO3-, and SO42- (electron acceptors) and the highest concentrations of Mn and Fe (products of microbial metabolic activity) overlap. The terminal redox-accepting processes in groundwater ranged from oxygen reduction to sulfate reduction. The most anoxic processes were registered in piezometers closest to the source of contamination, as was also confirmed by the redox potential (Eh) measurements. High electrical conductivity values and the highest TOC, SiO2, and Al concentrations also overlap in the contaminated zone close to the source of contamination. Scanning electron microscopy study of quartz grains from the zone undergoing the impact of biodegradation confirmed the occurrence of weathering microscale processes on mineral surfaces. Taking all these factors together, it seems reasonable to assume that microbiological activity has caused the enhanced weathering of silicate minerals.
T2  - Environmental Geochemistry and Health
T1  - Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia)
EP  - 1935
IS  - 7
SP  - 1921
VL  - 42
DO  - 10.1007/s10653-019-00462-9
UR  - conv_1461
ER  - 

@article{
author = "Marić, Nenad and Strbacki, Jana and Mrazovac Kurilić, Sanja and Beskoski, Vladimir P. and Nikić, Zoran and Ignjatović, Snežana and Malbasić, Jovana",
year = "2020",
abstract = "Aquifer contamination by petroleum hydrocarbons leads to measurable changes of groundwater hydrochemistry, primarily due to the microbiological activity. This study analyzes this phenomenon at an historical kerosene-contaminated site in Vitanovac (central Serbia). Due to the long-term hydrocarbon contamination and exposure to aerobic and anaerobic biodegradation mechanisms, the lowest concentrations of O-2, NO3-, and SO42- (electron acceptors) and the highest concentrations of Mn and Fe (products of microbial metabolic activity) overlap. The terminal redox-accepting processes in groundwater ranged from oxygen reduction to sulfate reduction. The most anoxic processes were registered in piezometers closest to the source of contamination, as was also confirmed by the redox potential (Eh) measurements. High electrical conductivity values and the highest TOC, SiO2, and Al concentrations also overlap in the contaminated zone close to the source of contamination. Scanning electron microscopy study of quartz grains from the zone undergoing the impact of biodegradation confirmed the occurrence of weathering microscale processes on mineral surfaces. Taking all these factors together, it seems reasonable to assume that microbiological activity has caused the enhanced weathering of silicate minerals.",
journal = "Environmental Geochemistry and Health",
title = "Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia)",
pages = "1935-1921",
number = "7",
volume = "42",
doi = "10.1007/s10653-019-00462-9",
url = "conv_1461"
}

Marić, N., Strbacki, J., Mrazovac Kurilić, S., Beskoski, V. P., Nikić, Z., Ignjatović, S.,& Malbasić, J.. (2020). Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia). in Environmental Geochemistry and Health, 42(7), 1921-1935.
https://doi.org/10.1007/s10653-019-00462-9
conv_1461

Marić N, Strbacki J, Mrazovac Kurilić S, Beskoski VP, Nikić Z, Ignjatović S, Malbasić J. Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia). in Environmental Geochemistry and Health. 2020;42(7):1921-1935.
doi:10.1007/s10653-019-00462-9
conv_1461 .

Marić, Nenad, Strbacki, Jana, Mrazovac Kurilić, Sanja, Beskoski, Vladimir P., Nikić, Zoran, Ignjatović, Snežana, Malbasić, Jovana, "Hydrochemistry of groundwater contaminated by petroleum hydrocarbons: the impact of biodegradation (Vitanovac, Serbia)" in Environmental Geochemistry and Health, 42, no. 7 (2020):1921-1935,
https://doi.org/10.1007/s10653-019-00462-9 .,
conv_1461 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Pušić, Milenko
AU  - Papić, Petar
AU  - Marić, Nenad
PY  - 2020
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/1138
AB  - A part of the Balkan ultramafic massif is situated in western Serbia and belongs to a mountain range with several prominent peaks, including Mt. Tara, Mt. Zlatibor, and Mt. Zlatar. The porosity of ultramafic rocks is generally very low, such that they are classified as nearly or completely waterless rocks. However, due to tectonic activity and exogenic processes over geologic time, some ultramafic rocks exhibit a certain level of secondary fracture porosity. Hydraulically interconnected fractures can form aquifers of the fractured type, such as the one found in Gruda on Mt. Zlatibor. On this location, the quality parameters of the groundwater in the fractured aquifer, drained via a spring called Bijela eesma, prompted detailed multidisciplinary investigations aimed at defining the elements of the aquifer for commercial water bottling purposes. Given that the investigations were comprehensive, the results allowed high-quality interpretation of the hydrogeologic conditions and provided the background for developing a hydrodynamic model of the fractured hydrogeologic system in the ultramafic rocks at Gruda. Modfiow software was used for modeling. This software is primarily intended for intergranular aquifers, but no programs are available for fractured aquifers in hard rocks with pronounced discontinuities. Modeling of the fractured aquifer in the ultramafic rocks at Gruda provided the following information: size of active infiltration surface, hydraulic conductivity of the porous medium, rate of recharge, residence time of a drop of groundwater from entry to exit, graphical representation of streamlines, and the like. Despite these difficulties, the results are satisfactory. The values of the analyzed parameters are believed to be objective and indicate a certain possibility of using Modflow in hydrodynamic modeling and solving hydrogeologic problems that involve hard rocks and fractured porosity. In practice, this is especially important for sanitary protection zoning of groundwater sources that rely on fractured aquifers.
T2  - Journal of Hydrology
T1  - Hydrodynamic model of hydrogeologic fracture system in Gruda ultramafic rocks, western Serbia
VL  - 580
DO  - 10.1016/j.jhydrol.2019.124268
UR  - conv_1478
ER  - 

@article{
author = "Nikić, Zoran and Pušić, Milenko and Papić, Petar and Marić, Nenad",
year = "2020",
abstract = "A part of the Balkan ultramafic massif is situated in western Serbia and belongs to a mountain range with several prominent peaks, including Mt. Tara, Mt. Zlatibor, and Mt. Zlatar. The porosity of ultramafic rocks is generally very low, such that they are classified as nearly or completely waterless rocks. However, due to tectonic activity and exogenic processes over geologic time, some ultramafic rocks exhibit a certain level of secondary fracture porosity. Hydraulically interconnected fractures can form aquifers of the fractured type, such as the one found in Gruda on Mt. Zlatibor. On this location, the quality parameters of the groundwater in the fractured aquifer, drained via a spring called Bijela eesma, prompted detailed multidisciplinary investigations aimed at defining the elements of the aquifer for commercial water bottling purposes. Given that the investigations were comprehensive, the results allowed high-quality interpretation of the hydrogeologic conditions and provided the background for developing a hydrodynamic model of the fractured hydrogeologic system in the ultramafic rocks at Gruda. Modfiow software was used for modeling. This software is primarily intended for intergranular aquifers, but no programs are available for fractured aquifers in hard rocks with pronounced discontinuities. Modeling of the fractured aquifer in the ultramafic rocks at Gruda provided the following information: size of active infiltration surface, hydraulic conductivity of the porous medium, rate of recharge, residence time of a drop of groundwater from entry to exit, graphical representation of streamlines, and the like. Despite these difficulties, the results are satisfactory. The values of the analyzed parameters are believed to be objective and indicate a certain possibility of using Modflow in hydrodynamic modeling and solving hydrogeologic problems that involve hard rocks and fractured porosity. In practice, this is especially important for sanitary protection zoning of groundwater sources that rely on fractured aquifers.",
journal = "Journal of Hydrology",
title = "Hydrodynamic model of hydrogeologic fracture system in Gruda ultramafic rocks, western Serbia",
volume = "580",
doi = "10.1016/j.jhydrol.2019.124268",
url = "conv_1478"
}

Nikić, Z., Pušić, M., Papić, P.,& Marić, N.. (2020). Hydrodynamic model of hydrogeologic fracture system in Gruda ultramafic rocks, western Serbia. in Journal of Hydrology, 580.
https://doi.org/10.1016/j.jhydrol.2019.124268
conv_1478

Nikić Z, Pušić M, Papić P, Marić N. Hydrodynamic model of hydrogeologic fracture system in Gruda ultramafic rocks, western Serbia. in Journal of Hydrology. 2020;580.
doi:10.1016/j.jhydrol.2019.124268
conv_1478 .

Nikić, Zoran, Pušić, Milenko, Papić, Petar, Marić, Nenad, "Hydrodynamic model of hydrogeologic fracture system in Gruda ultramafic rocks, western Serbia" in Journal of Hydrology, 580 (2020),
https://doi.org/10.1016/j.jhydrol.2019.124268 .,
conv_1478 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Ristić, Ratko
AU  - Marić, Nenad
AU  - Milčanović, Vukašin
AU  - Polovina, Siniša
AU  - Malušević, Ivan
PY  - 2019
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/979
AB  - Bujične pregrade se grade radi kontrole erozionih procesa i bujičnih poplava. U Srbiji, zakonski obavezujućim dokumentima, VOS (2002) i PPRS (2010), predviđen je koncept rešavanja vodosnabdevanja stanovništva i industrije regionalnim sistemima za koje se vode obezbeđuju izgradnjom visokih brana i formiranjem vodoakumulacija. Ovim konceptom često nije moguće zadovoljiti potrebe lokalnih zajednica u brdsko-planinskim područjima. U cilju doprinosa rešavanju problema vodosnabdevanja ovih uglavnom siromašnih sela, sprovedena su istraživanja mogućnosti da se podzemne vode iz zaplava bujičnih pregrada upotrebe za ovu namenu. Izvršena su terenska istraživanja i kabinetske analize projektne dokumentacije za brojne pregrade i zaplave na prostoru Srbije. Analizirane su potencijalne količine i kvalitet podzemnih voda u zaplavu kao resurs za vodosnabdevanje stanovništva. Rezultati istraživanja ukazuju na veoma povoljne mogućnosti zaplava za akumuliranje podzemnih voda u vidu izdani zbijenog tipa sa slobodni nivoom, u količinama koje se mogu upotrebiti za vodosnabdevanje. Konstatovano je: 1) da u povoljnim uslovima kod pregrada na vodotokovima sa stalnim doticajem i zaplavom velikih dimenzija postoji mogućnost akumuliranja dovoljnih količina podzemnih voda kao resursa za vodosnabdevanje, 2) poboljšanje kvaliteta infiltriranih voda procesom filtracije kroz intergranularnu sredinu zaplava do nivoa upotrebljivosti za vodosnabdevanje i 3) povoljni ekonomski parametri za otvaranje izvorišta u zaplavu u poređenju sa drugim vidovima izvorišta voda. Istaknuta je mogućnost da bujične pregrade, pored tradicionalne uloge mogu dobiti još jednu namenu, kao objekti za lokalno vodosnabdevanje.
AB  - Check dams are built to control erosion processes and torrential floods. In Serbia, legally binding documents, VOS (2002) and PPRS (2010), provide the concept for the water supply of the population and industry by regional systems for which water is provided by building high dams and formation of reservoirs. With this concept, it is often not possible to meet the needs of local communities in mountainous areas. In order to contribute to solving the water supply problems of these mostly poor villages, research was conducted on the possibility of using check dam aggradation groundwater for this purpose. Field investigations and analysis of project documentation for numerous check dams and aggradations in Serbia were carried out. Potential quantities and quality of groundwater in the aggradations were analyzed as a resource for the water supply of the population. The results of the research indicate very favorable possibilities of the aggradations for the accumulation of groundwater in the form of unconfined or phreatic aquifer with a free water table, in quantities that can be used for water supply. It was stated that: 1) under favorable conditions, with check dams on watercourses with constant flow and large-scale aggradations, there is a possibility of accumulating sufficient quantities of groundwater as a resource for water supply, 2) improving the quality of infiltrated waters by the process of filtration through intergranular porous media of the aggradation, and reaching the level of water supply quality, and 3) favorable economic parameters for opening the source at the aggradation, compared to other types of water sources. The possibility that check dams, in addition to their traditional role, could be used for local water supply facilities was also highlighted.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Zaplav bujične pregrade u funkciji lokalnog vodosnabdevanja stanovništva brdsko planinskih područja
T1  - Function of check dam aggradation in local water supply of mountainous areas
EP  - 130
IS  - 120
SP  - 117
DO  - 10.2298/GSF1920117N
UR  - conv_491
ER  - 

@article{
author = "Nikić, Zoran and Ristić, Ratko and Marić, Nenad and Milčanović, Vukašin and Polovina, Siniša and Malušević, Ivan",
year = "2019",
abstract = "Bujične pregrade se grade radi kontrole erozionih procesa i bujičnih poplava. U Srbiji, zakonski obavezujućim dokumentima, VOS (2002) i PPRS (2010), predviđen je koncept rešavanja vodosnabdevanja stanovništva i industrije regionalnim sistemima za koje se vode obezbeđuju izgradnjom visokih brana i formiranjem vodoakumulacija. Ovim konceptom često nije moguće zadovoljiti potrebe lokalnih zajednica u brdsko-planinskim područjima. U cilju doprinosa rešavanju problema vodosnabdevanja ovih uglavnom siromašnih sela, sprovedena su istraživanja mogućnosti da se podzemne vode iz zaplava bujičnih pregrada upotrebe za ovu namenu. Izvršena su terenska istraživanja i kabinetske analize projektne dokumentacije za brojne pregrade i zaplave na prostoru Srbije. Analizirane su potencijalne količine i kvalitet podzemnih voda u zaplavu kao resurs za vodosnabdevanje stanovništva. Rezultati istraživanja ukazuju na veoma povoljne mogućnosti zaplava za akumuliranje podzemnih voda u vidu izdani zbijenog tipa sa slobodni nivoom, u količinama koje se mogu upotrebiti za vodosnabdevanje. Konstatovano je: 1) da u povoljnim uslovima kod pregrada na vodotokovima sa stalnim doticajem i zaplavom velikih dimenzija postoji mogućnost akumuliranja dovoljnih količina podzemnih voda kao resursa za vodosnabdevanje, 2) poboljšanje kvaliteta infiltriranih voda procesom filtracije kroz intergranularnu sredinu zaplava do nivoa upotrebljivosti za vodosnabdevanje i 3) povoljni ekonomski parametri za otvaranje izvorišta u zaplavu u poređenju sa drugim vidovima izvorišta voda. Istaknuta je mogućnost da bujične pregrade, pored tradicionalne uloge mogu dobiti još jednu namenu, kao objekti za lokalno vodosnabdevanje., Check dams are built to control erosion processes and torrential floods. In Serbia, legally binding documents, VOS (2002) and PPRS (2010), provide the concept for the water supply of the population and industry by regional systems for which water is provided by building high dams and formation of reservoirs. With this concept, it is often not possible to meet the needs of local communities in mountainous areas. In order to contribute to solving the water supply problems of these mostly poor villages, research was conducted on the possibility of using check dam aggradation groundwater for this purpose. Field investigations and analysis of project documentation for numerous check dams and aggradations in Serbia were carried out. Potential quantities and quality of groundwater in the aggradations were analyzed as a resource for the water supply of the population. The results of the research indicate very favorable possibilities of the aggradations for the accumulation of groundwater in the form of unconfined or phreatic aquifer with a free water table, in quantities that can be used for water supply. It was stated that: 1) under favorable conditions, with check dams on watercourses with constant flow and large-scale aggradations, there is a possibility of accumulating sufficient quantities of groundwater as a resource for water supply, 2) improving the quality of infiltrated waters by the process of filtration through intergranular porous media of the aggradation, and reaching the level of water supply quality, and 3) favorable economic parameters for opening the source at the aggradation, compared to other types of water sources. The possibility that check dams, in addition to their traditional role, could be used for local water supply facilities was also highlighted.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Zaplav bujične pregrade u funkciji lokalnog vodosnabdevanja stanovništva brdsko planinskih područja, Function of check dam aggradation in local water supply of mountainous areas",
pages = "130-117",
number = "120",
doi = "10.2298/GSF1920117N",
url = "conv_491"
}

Nikić, Z., Ristić, R., Marić, N., Milčanović, V., Polovina, S.,& Malušević, I.. (2019). Zaplav bujične pregrade u funkciji lokalnog vodosnabdevanja stanovništva brdsko planinskih područja. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(120), 117-130.
https://doi.org/10.2298/GSF1920117N
conv_491

Nikić Z, Ristić R, Marić N, Milčanović V, Polovina S, Malušević I. Zaplav bujične pregrade u funkciji lokalnog vodosnabdevanja stanovništva brdsko planinskih područja. in Glasnik Šumarskog fakulteta. 2019;(120):117-130.
doi:10.2298/GSF1920117N
conv_491 .

Nikić, Zoran, Ristić, Ratko, Marić, Nenad, Milčanović, Vukašin, Polovina, Siniša, Malušević, Ivan, "Zaplav bujične pregrade u funkciji lokalnog vodosnabdevanja stanovništva brdsko planinskih područja" in Glasnik Šumarskog fakulteta, no. 120 (2019):117-130,
https://doi.org/10.2298/GSF1920117N .,
conv_491 .

TY  - CONF
AU  - Nikić, Zoran
AU  - Vidović, M.
AU  - Marić, Nenad
AU  - Trajković, I.
AU  - Gordanić, V.
PY  - 2019
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/1039
AB  - Hyperalkaline (pH gt 10.5) springs are extremely rare. There are only about ten in the entire world. This type of water has been identified in an ultramafic massif in central Serbia, on Mt. Studena, during the course of investigations conducted in 2017. The investigations included prospecting, terrain mapping and sampling, followed by assessment of data collected in situ and from laboratory analyses. The hyperalkaline spring is of the ascending type, its yield is very low (~0.05 L/s), and the water emerges in a diffuse fashion along fractures. The spring water is of the Ca-OH type, the pH level is 11.6 and the water temperature 11.2°C. The drainage area of the spring, like the entire Mt. Studena, is built up of Paleozoic ultramafic rocks, which geotectonically belong to the External Vardar Subzone. The spring is situated in the floodplain of the Brezanska River, whose channel is the local base level of erosion. The primary point of groundwater emergence is in solid ultramafic rocks, within a zone of fractures up to 0.5 mm wide, over a land area of ~1.5 m2. The paper describes a conceptual model of the formation of hyperalkaline water for the ascending spring in the ultramafic valley of the Brezanska River, on the northern slopes of Mt. Studena. The pH level of the groundwater is indicative of contemporary serpentinization, deep groundwater circulation and a prolonged contact between groundwater and ultramafic rocks along secondary fracture systems.
PB  - International Multidisciplinary Scientific Geoconference
C3  - International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
T1  - Occurrence of hyperalkaline spring water in the Brezanska river, central Serbia
EP  - 160
IS  - 3.1
SP  - 153
VL  - 19
DO  - 10.5593/sgem2019/3.1/S12.020
UR  - conv_2001
ER  - 

@conference{
author = "Nikić, Zoran and Vidović, M. and Marić, Nenad and Trajković, I. and Gordanić, V.",
year = "2019",
abstract = "Hyperalkaline (pH gt 10.5) springs are extremely rare. There are only about ten in the entire world. This type of water has been identified in an ultramafic massif in central Serbia, on Mt. Studena, during the course of investigations conducted in 2017. The investigations included prospecting, terrain mapping and sampling, followed by assessment of data collected in situ and from laboratory analyses. The hyperalkaline spring is of the ascending type, its yield is very low (~0.05 L/s), and the water emerges in a diffuse fashion along fractures. The spring water is of the Ca-OH type, the pH level is 11.6 and the water temperature 11.2°C. The drainage area of the spring, like the entire Mt. Studena, is built up of Paleozoic ultramafic rocks, which geotectonically belong to the External Vardar Subzone. The spring is situated in the floodplain of the Brezanska River, whose channel is the local base level of erosion. The primary point of groundwater emergence is in solid ultramafic rocks, within a zone of fractures up to 0.5 mm wide, over a land area of ~1.5 m2. The paper describes a conceptual model of the formation of hyperalkaline water for the ascending spring in the ultramafic valley of the Brezanska River, on the northern slopes of Mt. Studena. The pH level of the groundwater is indicative of contemporary serpentinization, deep groundwater circulation and a prolonged contact between groundwater and ultramafic rocks along secondary fracture systems.",
publisher = "International Multidisciplinary Scientific Geoconference",
journal = "International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM",
title = "Occurrence of hyperalkaline spring water in the Brezanska river, central Serbia",
pages = "160-153",
number = "3.1",
volume = "19",
doi = "10.5593/sgem2019/3.1/S12.020",
url = "conv_2001"
}

Nikić, Z., Vidović, M., Marić, N., Trajković, I.,& Gordanić, V.. (2019). Occurrence of hyperalkaline spring water in the Brezanska river, central Serbia. in International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
International Multidisciplinary Scientific Geoconference., 19(3.1), 153-160.
https://doi.org/10.5593/sgem2019/3.1/S12.020
conv_2001

Nikić Z, Vidović M, Marić N, Trajković I, Gordanić V. Occurrence of hyperalkaline spring water in the Brezanska river, central Serbia. in International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. 2019;19(3.1):153-160.
doi:10.5593/sgem2019/3.1/S12.020
conv_2001 .

Nikić, Zoran, Vidović, M., Marić, Nenad, Trajković, I., Gordanić, V., "Occurrence of hyperalkaline spring water in the Brezanska river, central Serbia" in International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, 19, no. 3.1 (2019):153-160,
https://doi.org/10.5593/sgem2019/3.1/S12.020 .,
conv_2001 .

TY  - JOUR
AU  - Marić, Nenad
AU  - Matić, Ivan
AU  - Papić, Petar
AU  - Beskoski, Vladimir P.
AU  - Ilić, Mila
AU  - Gojgić-Cvijović, Gordana
AU  - Miletić, Srdan
AU  - Nikić, Zoran
AU  - Vrvić, Miroslav M.
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/921
AB  - The role of natural attenuation processes in groundwater contamination by petroleum hydrocarbons is of intense scientific and practical interest. This study provides insight into the biodegradation effects in groundwater at a site contaminated by kerosene (jet fuel) in 1993 (Vitanovac, Serbia). Total petroleum hydrocarbons (TPH), hydrochemical indicators (O-2 , NO3-, Mn, Fe, SO42-, HCO3- ), delta C-13 of dissolved inorganic carbon (DIC), and other parameters were measured to demonstrate biodegradation effects in groundwater at the contaminated site. Due to different biodegradation mechanisms, the zone of the lowest concentrations of electron acceptors and the zone of the highest concentrations of metabolic products of biodegradation overlap. Based on the analysis of redox-sensitive compounds in groundwater samples, redox processes ranged from strictly anoxic (methanogenesis) to oxic (oxygen reduction) within a short distance. The dependence of groundwater redox conditions on the distance from the source of contamination was observed. delta C-13 values of DIC ranged from -15.83 to -2.75 parts per thousand, and the most positive values correspond to the zone under anaerobic and methanogenic conditions. Overall, results obtained provide clear evidence on the effects of natural attenuation processes-the activity of biodegradation mechanisms in field conditions.
T2  - Environmental Monitoring and Assessment
T1  - Natural attenuation of petroleum hydrocarbons-a study of biodegradation effects in groundwater (Vitanovac, Serbia)
IS  - 2
VL  - 190
DO  - 10.1007/s10661-018-6462-4
UR  - conv_1327
ER  - 

@article{
author = "Marić, Nenad and Matić, Ivan and Papić, Petar and Beskoski, Vladimir P. and Ilić, Mila and Gojgić-Cvijović, Gordana and Miletić, Srdan and Nikić, Zoran and Vrvić, Miroslav M.",
year = "2018",
abstract = "The role of natural attenuation processes in groundwater contamination by petroleum hydrocarbons is of intense scientific and practical interest. This study provides insight into the biodegradation effects in groundwater at a site contaminated by kerosene (jet fuel) in 1993 (Vitanovac, Serbia). Total petroleum hydrocarbons (TPH), hydrochemical indicators (O-2 , NO3-, Mn, Fe, SO42-, HCO3- ), delta C-13 of dissolved inorganic carbon (DIC), and other parameters were measured to demonstrate biodegradation effects in groundwater at the contaminated site. Due to different biodegradation mechanisms, the zone of the lowest concentrations of electron acceptors and the zone of the highest concentrations of metabolic products of biodegradation overlap. Based on the analysis of redox-sensitive compounds in groundwater samples, redox processes ranged from strictly anoxic (methanogenesis) to oxic (oxygen reduction) within a short distance. The dependence of groundwater redox conditions on the distance from the source of contamination was observed. delta C-13 values of DIC ranged from -15.83 to -2.75 parts per thousand, and the most positive values correspond to the zone under anaerobic and methanogenic conditions. Overall, results obtained provide clear evidence on the effects of natural attenuation processes-the activity of biodegradation mechanisms in field conditions.",
journal = "Environmental Monitoring and Assessment",
title = "Natural attenuation of petroleum hydrocarbons-a study of biodegradation effects in groundwater (Vitanovac, Serbia)",
number = "2",
volume = "190",
doi = "10.1007/s10661-018-6462-4",
url = "conv_1327"
}

Marić, N., Matić, I., Papić, P., Beskoski, V. P., Ilić, M., Gojgić-Cvijović, G., Miletić, S., Nikić, Z.,& Vrvić, M. M.. (2018). Natural attenuation of petroleum hydrocarbons-a study of biodegradation effects in groundwater (Vitanovac, Serbia). in Environmental Monitoring and Assessment, 190(2).
https://doi.org/10.1007/s10661-018-6462-4
conv_1327

Marić N, Matić I, Papić P, Beskoski VP, Ilić M, Gojgić-Cvijović G, Miletić S, Nikić Z, Vrvić MM. Natural attenuation of petroleum hydrocarbons-a study of biodegradation effects in groundwater (Vitanovac, Serbia). in Environmental Monitoring and Assessment. 2018;190(2).
doi:10.1007/s10661-018-6462-4
conv_1327 .

Marić, Nenad, Matić, Ivan, Papić, Petar, Beskoski, Vladimir P., Ilić, Mila, Gojgić-Cvijović, Gordana, Miletić, Srdan, Nikić, Zoran, Vrvić, Miroslav M., "Natural attenuation of petroleum hydrocarbons-a study of biodegradation effects in groundwater (Vitanovac, Serbia)" in Environmental Monitoring and Assessment, 190, no. 2 (2018),
https://doi.org/10.1007/s10661-018-6462-4 .,
conv_1327 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Ristić, Ratko
AU  - Marić, Nenad
AU  - Milčanović, Vukašin
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/955
AB  - Prilog tumačenju uloge geosredine u formiranju ekstremnih proticaja Rosomačke reke pruža egzaktne i empirijske dokaze o značajnosti i potrebi njenog poznavanja. Za hidrološki neizučene vodotoke, pogotovu za one koji nemaju kontinuitet proticaja, poznavanje uloge geosredine u nastajanju njihovih ekstremnih proticaja doprinosi realnijem odgovoru na praktična pitanja upravljanja rečnim vodama, zaštiti od neželjenog dejstva voda, definisanja ekološkog aspekta vodotoka pod uticajem različitih promena u bliskoj budućnosti (klimatskih, antropogenih, hidroloških), očuvanju kvaliteta rečnih voda, ispunjavanju zahteva Okvirne direktive EU o vodama 2000. Cilj rada je bolje razumevanje rečnih sistema i njihovih oticaja u vidu velikih i malih voda ili potpunog presušivanja hidrološki neizučenih ali i hidrološki izučenih vodotoka, a kroz prikaz uloge geosredine. Na konkretnom primeru Rosomačke reke, hidrološki neizučenog vodotoka, istaknut je značaj geosredine u tumačenju njenih ekstremnih proticaja. Analiziran je doprinos sledećih elemenata geosredine slivnog područja: litološkog, neotektonskog, hidrogeološkog i morfološkog. Metod istraživanja je zasnovan na terenskim istraživanjima, kvantitativnoj geomorfološkoj analizi, sistematizaciji i sintezi dobijenih rezultata, kao i analizi publikovanih radova. Takođe, doprinos se ogleda u isticanju potrebe komunikacije između stučnjaka različitih specijalnosti koji se bave hidrografskim sistemima.
AB  - Annex to the interpretation of the role of geoenvironment in the formation of extreme discharges of the Rosomačka River provides exact and empirical evidence of the significance and the need for its knowledge. For hydrologically unstudied watercourses, especially for those which do not have continuity of discharges, the knowledge of the role of geoenvironment in the emergence of their extreme discharges contributes to a more realistic response to practical water management issues, protection against adverse effects of waters, defining the ecological aspect of watercourses under the influence of various changes in the near future (climatic, anthropogenic, hydrological), preserving the quality of river water, meeting the requirements of the EU Water Framework Directive 2000. The aim of the paper is to understand better the river systems and their runoffs in the form of high and low waters or complete drying up of hydrologically unstudied but also of hydrologically studied watercourses, and through the representation of the role of geoenvironment. On the concrete example of the Rosomačka River, a hydrologically unstudied watercourse, the significance of geoenvironment in the interpretation of its extreme discharges was emphasized. The contribution of the following elements of geoenvironment of the basin area was analyzed: lithological, neotectonic, hydrogeological and morphological. The research method is based on field research, quantitative geomorphological analysis, systematization and synthesis of the obtained results, as well as the analysis of published papers. Additionally, the contribution is reflected in emphasizing the need for communication between experts of various specialties dealing with hydrographic systems.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Prilog tumačenju uloge geosredine u ekstremnim proticajima rosomačke reke - visok kraj
T1  - Contribution to the interpretation of the role of geoenvironment in extreme discharges of the rosomačk river - visok kraj
EP  - 112
IS  - 118
SP  - 87
DO  - 10.2298/GSF1818087N
UR  - conv_474
ER  - 

@article{
author = "Nikić, Zoran and Ristić, Ratko and Marić, Nenad and Milčanović, Vukašin",
year = "2018",
abstract = "Prilog tumačenju uloge geosredine u formiranju ekstremnih proticaja Rosomačke reke pruža egzaktne i empirijske dokaze o značajnosti i potrebi njenog poznavanja. Za hidrološki neizučene vodotoke, pogotovu za one koji nemaju kontinuitet proticaja, poznavanje uloge geosredine u nastajanju njihovih ekstremnih proticaja doprinosi realnijem odgovoru na praktična pitanja upravljanja rečnim vodama, zaštiti od neželjenog dejstva voda, definisanja ekološkog aspekta vodotoka pod uticajem različitih promena u bliskoj budućnosti (klimatskih, antropogenih, hidroloških), očuvanju kvaliteta rečnih voda, ispunjavanju zahteva Okvirne direktive EU o vodama 2000. Cilj rada je bolje razumevanje rečnih sistema i njihovih oticaja u vidu velikih i malih voda ili potpunog presušivanja hidrološki neizučenih ali i hidrološki izučenih vodotoka, a kroz prikaz uloge geosredine. Na konkretnom primeru Rosomačke reke, hidrološki neizučenog vodotoka, istaknut je značaj geosredine u tumačenju njenih ekstremnih proticaja. Analiziran je doprinos sledećih elemenata geosredine slivnog područja: litološkog, neotektonskog, hidrogeološkog i morfološkog. Metod istraživanja je zasnovan na terenskim istraživanjima, kvantitativnoj geomorfološkoj analizi, sistematizaciji i sintezi dobijenih rezultata, kao i analizi publikovanih radova. Takođe, doprinos se ogleda u isticanju potrebe komunikacije između stučnjaka različitih specijalnosti koji se bave hidrografskim sistemima., Annex to the interpretation of the role of geoenvironment in the formation of extreme discharges of the Rosomačka River provides exact and empirical evidence of the significance and the need for its knowledge. For hydrologically unstudied watercourses, especially for those which do not have continuity of discharges, the knowledge of the role of geoenvironment in the emergence of their extreme discharges contributes to a more realistic response to practical water management issues, protection against adverse effects of waters, defining the ecological aspect of watercourses under the influence of various changes in the near future (climatic, anthropogenic, hydrological), preserving the quality of river water, meeting the requirements of the EU Water Framework Directive 2000. The aim of the paper is to understand better the river systems and their runoffs in the form of high and low waters or complete drying up of hydrologically unstudied but also of hydrologically studied watercourses, and through the representation of the role of geoenvironment. On the concrete example of the Rosomačka River, a hydrologically unstudied watercourse, the significance of geoenvironment in the interpretation of its extreme discharges was emphasized. The contribution of the following elements of geoenvironment of the basin area was analyzed: lithological, neotectonic, hydrogeological and morphological. The research method is based on field research, quantitative geomorphological analysis, systematization and synthesis of the obtained results, as well as the analysis of published papers. Additionally, the contribution is reflected in emphasizing the need for communication between experts of various specialties dealing with hydrographic systems.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Prilog tumačenju uloge geosredine u ekstremnim proticajima rosomačke reke - visok kraj, Contribution to the interpretation of the role of geoenvironment in extreme discharges of the rosomačk river - visok kraj",
pages = "112-87",
number = "118",
doi = "10.2298/GSF1818087N",
url = "conv_474"
}

Nikić, Z., Ristić, R., Marić, N.,& Milčanović, V.. (2018). Prilog tumačenju uloge geosredine u ekstremnim proticajima rosomačke reke - visok kraj. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(118), 87-112.
https://doi.org/10.2298/GSF1818087N
conv_474

Nikić Z, Ristić R, Marić N, Milčanović V. Prilog tumačenju uloge geosredine u ekstremnim proticajima rosomačke reke - visok kraj. in Glasnik Šumarskog fakulteta. 2018;(118):87-112.
doi:10.2298/GSF1818087N
conv_474 .

Nikić, Zoran, Ristić, Ratko, Marić, Nenad, Milčanović, Vukašin, "Prilog tumačenju uloge geosredine u ekstremnim proticajima rosomačke reke - visok kraj" in Glasnik Šumarskog fakulteta, no. 118 (2018):87-112,
https://doi.org/10.2298/GSF1818087N .,
conv_474 .

TY  - CONF
AU  - Marić, Nenad
AU  - Nikić, Zoran
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/978
AB  - Once released in the environment, petroleum hydrocarbons can be long-term sources of contamination. The main advantage of bioremediation compared to conventional remediation treatments is its reduced cost. Natural attenuation is the passive bioremediation approach that relies on natural processes to reduce contamination. This study provides insight into the natural attenuation processes in groundwater in the alluvial deposits of the Zapadna Morava River (the site of historical contamination by kerosene in Vitanovac, Kraljevo, Serbia). Monitoring was performed in the direction of groundwater flow, downgradient from the source of contamination. Groundwater samples were analyzed for the following parameters: total petroleum hydrocarbons (TPH), O-2, NO3-, Mn, Fe and SO42-. TPH concentrations declined in groundwater across the site, and were accompanied by increasing concentrations of electron acceptors (O-2, NO3-, SO42-) and decreasing concentrations of metabolic products of biodegradation (Mn, Fe). The observed trends provide strong evidence of the activity of different biodegradation mechanisms at this site (aerobic respiration, nitrate reduction, reduction of manganese (IV), reduction of iron (III) and sulfate reduction). The results obtained confirm the natural occurrence of aerobic and anaerobic biodegradation mechanisms in this phreatic aquifer contaminated by petroleum hydrocarbons 20 years ago. However, use of natural attenuation as a cost-effective remediation alternative depends on its capacity to ensure protection of public health, safety and the environment.
C3  - Soil and Water Resources Protection in the Changing Environment
T1  - Potential of natural attenuation processes in environmental contamination by petroleum hydrocarbons
EP  - 53
SP  - 44
VL  - 45
UR  - conv_1409
ER  - 

@conference{
author = "Marić, Nenad and Nikić, Zoran",
year = "2018",
abstract = "Once released in the environment, petroleum hydrocarbons can be long-term sources of contamination. The main advantage of bioremediation compared to conventional remediation treatments is its reduced cost. Natural attenuation is the passive bioremediation approach that relies on natural processes to reduce contamination. This study provides insight into the natural attenuation processes in groundwater in the alluvial deposits of the Zapadna Morava River (the site of historical contamination by kerosene in Vitanovac, Kraljevo, Serbia). Monitoring was performed in the direction of groundwater flow, downgradient from the source of contamination. Groundwater samples were analyzed for the following parameters: total petroleum hydrocarbons (TPH), O-2, NO3-, Mn, Fe and SO42-. TPH concentrations declined in groundwater across the site, and were accompanied by increasing concentrations of electron acceptors (O-2, NO3-, SO42-) and decreasing concentrations of metabolic products of biodegradation (Mn, Fe). The observed trends provide strong evidence of the activity of different biodegradation mechanisms at this site (aerobic respiration, nitrate reduction, reduction of manganese (IV), reduction of iron (III) and sulfate reduction). The results obtained confirm the natural occurrence of aerobic and anaerobic biodegradation mechanisms in this phreatic aquifer contaminated by petroleum hydrocarbons 20 years ago. However, use of natural attenuation as a cost-effective remediation alternative depends on its capacity to ensure protection of public health, safety and the environment.",
journal = "Soil and Water Resources Protection in the Changing Environment",
title = "Potential of natural attenuation processes in environmental contamination by petroleum hydrocarbons",
pages = "53-44",
volume = "45",
url = "conv_1409"
}

Marić, N.,& Nikić, Z.. (2018). Potential of natural attenuation processes in environmental contamination by petroleum hydrocarbons. in Soil and Water Resources Protection in the Changing Environment, 45, 44-53.
conv_1409

Marić N, Nikić Z. Potential of natural attenuation processes in environmental contamination by petroleum hydrocarbons. in Soil and Water Resources Protection in the Changing Environment. 2018;45:44-53.
conv_1409 .

Marić, Nenad, Nikić, Zoran, "Potential of natural attenuation processes in environmental contamination by petroleum hydrocarbons" in Soil and Water Resources Protection in the Changing Environment, 45 (2018):44-53,
conv_1409 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Marić, Nenad
PY  - 2018
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/972
T2  - Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society
T1  - The role of neotectonics in the formation of Rosomacka River flow - Stara Planina, Serbia
EP  - 114
SP  - 113
VL  - 79
UR  - conv_1562
ER  - 

@article{
author = "Nikić, Zoran and Marić, Nenad",
year = "2018",
journal = "Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society",
title = "The role of neotectonics in the formation of Rosomacka River flow - Stara Planina, Serbia",
pages = "114-113",
volume = "79",
url = "conv_1562"
}

Nikić, Z.,& Marić, N.. (2018). The role of neotectonics in the formation of Rosomacka River flow - Stara Planina, Serbia. in Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society, 79, 113-114.
conv_1562

Nikić Z, Marić N. The role of neotectonics in the formation of Rosomacka River flow - Stara Planina, Serbia. in Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society. 2018;79:113-114.
conv_1562 .

Nikić, Zoran, Marić, Nenad, "The role of neotectonics in the formation of Rosomacka River flow - Stara Planina, Serbia" in Spisanie Na B Lgarskoto Geologichesko Druzhestov-Review of the Bulgarian Geological Society, 79 (2018):113-114,
conv_1562 .

TY  - JOUR
AU  - Marić, Nenad
AU  - Petrović, Rastko
AU  - Nikić, Zoran
AU  - Beškoski, Vladimir
AU  - Papić, Petar
AU  - Matić, Ivan
AU  - Vrvić, Miroslav M.
PY  - 2017
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/822
AB  - Prirodno prečišćavanje objedinjuje niz procesa koji dovode do smanjenja zagađenja podzemnih voda naftnim ugljovodonicima. Biodegradacija često ima glavnu ulogu među ovim procesima, pošto mikroorgranizmi koriste naftne ugljovodonike kao izvor energije i ugljenika. Primena prirodnog prečišćavanja kao remedijacionog tretmana podrazumeva detaljnu hidrogeološku karakterizaciju zagađene lokacije i osmatranje procesa kojim dolazi do smanjenja zagađenja. U radu su prikazani rezultati osmatranja prirodnog prečišćavanja na lokaciji istorijskog zagađenja kerozinom kod Kraljeva. U cilju osmatranja efekata biodegradacije, u podzemnim vodama su vršena merenja sledećih parametara: ukupnih naftnih ugljovodonika (TPH), elektron akceptora (O2, NO3 -, SO4 2-), metaboličkih produkata biodegradacije (Mn, Fe) i redoks potencijala (Eh). Dobijeni rezultati i metodološki pristup mogu se smatrati korisnim kod koncipiranja budućih istraživanja ovog tipa.
AB  - Natural attenuation includes a number of processes that cause the reduction of groundwater contamination by petroleum hydrocarbons. Among these processes biodegradation often plays a major role, since microorganisms use petroleum hydrocarbons as the source of energy and carbon. Application of natural attenuation as a remediation approach requires detailed hydrogeological characterization of the contaminated site and monitoring of attenuation processes. This paper presents the results of monitored natural attenuation at the site of historical contamination by kerosene near Kraljevo. In order to demonstrate effects of biodegradation, following parameters in groundwater were measured: total petroleum hydrocarbons (TPH), electron acceptors (O2, NO3, SO4 2-), metabolic products of biodegradation (Mn, Fe), and redox potential (Eh). Obtained results and methodological approach can be considered useful in conceptualizing future studies of this type.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Prirodno prečišćavanje podzemnih voda zagađenih naftnim ugljovodonicima - mehanizam, koncepcija istraživanja, primena u praksi
T1  - Natural attenuation of groundwater contaminated by petroleum hydrocarbons: Mechanism, research concept, practical application
EP  - 454
IS  - 4
SP  - 445
VL  - 58
DO  - 10.5937/ZasMat1704445M
UR  - conv_62
ER  - 

@article{
author = "Marić, Nenad and Petrović, Rastko and Nikić, Zoran and Beškoski, Vladimir and Papić, Petar and Matić, Ivan and Vrvić, Miroslav M.",
year = "2017",
abstract = "Prirodno prečišćavanje objedinjuje niz procesa koji dovode do smanjenja zagađenja podzemnih voda naftnim ugljovodonicima. Biodegradacija često ima glavnu ulogu među ovim procesima, pošto mikroorgranizmi koriste naftne ugljovodonike kao izvor energije i ugljenika. Primena prirodnog prečišćavanja kao remedijacionog tretmana podrazumeva detaljnu hidrogeološku karakterizaciju zagađene lokacije i osmatranje procesa kojim dolazi do smanjenja zagađenja. U radu su prikazani rezultati osmatranja prirodnog prečišćavanja na lokaciji istorijskog zagađenja kerozinom kod Kraljeva. U cilju osmatranja efekata biodegradacije, u podzemnim vodama su vršena merenja sledećih parametara: ukupnih naftnih ugljovodonika (TPH), elektron akceptora (O2, NO3 -, SO4 2-), metaboličkih produkata biodegradacije (Mn, Fe) i redoks potencijala (Eh). Dobijeni rezultati i metodološki pristup mogu se smatrati korisnim kod koncipiranja budućih istraživanja ovog tipa., Natural attenuation includes a number of processes that cause the reduction of groundwater contamination by petroleum hydrocarbons. Among these processes biodegradation often plays a major role, since microorganisms use petroleum hydrocarbons as the source of energy and carbon. Application of natural attenuation as a remediation approach requires detailed hydrogeological characterization of the contaminated site and monitoring of attenuation processes. This paper presents the results of monitored natural attenuation at the site of historical contamination by kerosene near Kraljevo. In order to demonstrate effects of biodegradation, following parameters in groundwater were measured: total petroleum hydrocarbons (TPH), electron acceptors (O2, NO3, SO4 2-), metabolic products of biodegradation (Mn, Fe), and redox potential (Eh). Obtained results and methodological approach can be considered useful in conceptualizing future studies of this type.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Prirodno prečišćavanje podzemnih voda zagađenih naftnim ugljovodonicima - mehanizam, koncepcija istraživanja, primena u praksi, Natural attenuation of groundwater contaminated by petroleum hydrocarbons: Mechanism, research concept, practical application",
pages = "454-445",
number = "4",
volume = "58",
doi = "10.5937/ZasMat1704445M",
url = "conv_62"
}

Marić, N., Petrović, R., Nikić, Z., Beškoski, V., Papić, P., Matić, I.,& Vrvić, M. M.. (2017). Prirodno prečišćavanje podzemnih voda zagađenih naftnim ugljovodonicima - mehanizam, koncepcija istraživanja, primena u praksi. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 58(4), 445-454.
https://doi.org/10.5937/ZasMat1704445M
conv_62

Marić N, Petrović R, Nikić Z, Beškoski V, Papić P, Matić I, Vrvić MM. Prirodno prečišćavanje podzemnih voda zagađenih naftnim ugljovodonicima - mehanizam, koncepcija istraživanja, primena u praksi. in Zaštita materijala. 2017;58(4):445-454.
doi:10.5937/ZasMat1704445M
conv_62 .

Marić, Nenad, Petrović, Rastko, Nikić, Zoran, Beškoski, Vladimir, Papić, Petar, Matić, Ivan, Vrvić, Miroslav M., "Prirodno prečišćavanje podzemnih voda zagađenih naftnim ugljovodonicima - mehanizam, koncepcija istraživanja, primena u praksi" in Zaštita materijala, 58, no. 4 (2017):445-454,
https://doi.org/10.5937/ZasMat1704445M .,
conv_62 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Anđelić, Мilenа
AU  - Letić, Ljubomir
AU  - Mrvaljević, Vaso
AU  - Nikolić, Vesna
PY  - 2014
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/608
AB  - Climate change that has occurred at the end of the last and at the beginning
   of this century, among other things, has a certain impact on forests as well.
   For the territory of Eastern Serbia, for two periods of climate observations,
   the reference period 1961-1990 and the period 1991-2012, a comparative
   analysis of the following climatic elements was done: air temperature, amount
   of precipitation and relative humidity of air. Calculations were performed on
   the basis of collected and systematized data from 11 meteorological stations
   (6 synoptic/main climatological and 5 regular climatological) that were part
   of the Republic Hydrometeorological Service, situated in the area of Eastern
   Serbia. Analysis of the anomalies of air temperature and precipitation as
   indicators of climate change for the period 1991-2012 compared to the
   reference period 1961-1990 was done separately for each of the four seasons
   (winter, spring, summer, autumn) and summarized for each period. The results
   of the comparative analysis show that in the period 1991-2012 compared to the
   reference period 1961-1990, there was an increase in the average annual air
   temperature, as well as the increase in the average air temperature for all
   four seasons, and a decrease in the average annual amounts of precipitation
   and the decrease in the relative humidity of air. [Projekat Ministarstva
   nauke Republike Srbije, br. 37008]
PB  - Srpsko geografsko društvo, Beograd
T2  - Glasnik Srpskog Geografskog Društva
T1  - Representation of certain indicators o climate change in the area of eastern Serbia in the period 1991-2012 compared to the reference period 1961-1990
EP  - 145
IS  - 4
SP  - 121
VL  - 94
DO  - 10.2298/GSGD140710005N
UR  - conv_2379
ER  - 

@article{
author = "Nikić, Zoran and Anđelić, Мilenа and Letić, Ljubomir and Mrvaljević, Vaso and Nikolić, Vesna",
year = "2014",
abstract = "Climate change that has occurred at the end of the last and at the beginning
   of this century, among other things, has a certain impact on forests as well.
   For the territory of Eastern Serbia, for two periods of climate observations,
   the reference period 1961-1990 and the period 1991-2012, a comparative
   analysis of the following climatic elements was done: air temperature, amount
   of precipitation and relative humidity of air. Calculations were performed on
   the basis of collected and systematized data from 11 meteorological stations
   (6 synoptic/main climatological and 5 regular climatological) that were part
   of the Republic Hydrometeorological Service, situated in the area of Eastern
   Serbia. Analysis of the anomalies of air temperature and precipitation as
   indicators of climate change for the period 1991-2012 compared to the
   reference period 1961-1990 was done separately for each of the four seasons
   (winter, spring, summer, autumn) and summarized for each period. The results
   of the comparative analysis show that in the period 1991-2012 compared to the
   reference period 1961-1990, there was an increase in the average annual air
   temperature, as well as the increase in the average air temperature for all
   four seasons, and a decrease in the average annual amounts of precipitation
   and the decrease in the relative humidity of air. [Projekat Ministarstva
   nauke Republike Srbije, br. 37008]",
publisher = "Srpsko geografsko društvo, Beograd",
journal = "Glasnik Srpskog Geografskog Društva",
title = "Representation of certain indicators o climate change in the area of eastern Serbia in the period 1991-2012 compared to the reference period 1961-1990",
pages = "145-121",
number = "4",
volume = "94",
doi = "10.2298/GSGD140710005N",
url = "conv_2379"
}

Nikić, Z., Anđelić, М., Letić, L., Mrvaljević, V.,& Nikolić, V.. (2014). Representation of certain indicators o climate change in the area of eastern Serbia in the period 1991-2012 compared to the reference period 1961-1990. in Glasnik Srpskog Geografskog Društva
Srpsko geografsko društvo, Beograd., 94(4), 121-145.
https://doi.org/10.2298/GSGD140710005N
conv_2379

Nikić Z, Anđelić М, Letić L, Mrvaljević V, Nikolić V. Representation of certain indicators o climate change in the area of eastern Serbia in the period 1991-2012 compared to the reference period 1961-1990. in Glasnik Srpskog Geografskog Društva. 2014;94(4):121-145.
doi:10.2298/GSGD140710005N
conv_2379 .

Nikić, Zoran, Anđelić, Мilenа, Letić, Ljubomir, Mrvaljević, Vaso, Nikolić, Vesna, "Representation of certain indicators o climate change in the area of eastern Serbia in the period 1991-2012 compared to the reference period 1961-1990" in Glasnik Srpskog Geografskog Društva, 94, no. 4 (2014):121-145,
https://doi.org/10.2298/GSGD140710005N .,
conv_2379 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Srecković-Batocanin, Danica
AU  - Burazer, Milenko
AU  - Ristić, Ratko
AU  - Papić, Petar
AU  - Nikolić, Vesna
PY  - 2013
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/564
AB  - Ultramafic rocks are generally taken to be 'waterless' or bearing little water. The mountain Zlatibor, western Serbia, largely built of Upper Jurassic ultramafics, is without perennial springs. However, in Gruda, an area on the NE side of Zlatibor, there are two perennial ascending springs with uniform discharge: Bijela esma and Hajduko Vrelo. The water from both springs is naturally mildly alkaline (pH similar to 8.4), of Mg-HCO3 type, and temperature similar to 11 A degrees C. The springs have been investigated with respect to derivation, dynamics and chemistry with a view to commercial use of the water. The results indicate zones of rocks fractured during tectonic events and/or under lithostatic pressure. Deep ultramafic rocks, equivalent to abyssal peridotites (the least depleted rocks of the upper mantle, rich in magnesium), include fractured aquifers characterized by heterogeneity and anisotropy. Groundwater arriving at the land surface derives from atmospheric precipitation, and its quality is converted through the process of serpentine acid hydrolysis into mildly alkaline Mg-HCO3 water. Both quantity and quality of water from these springs are stable and are unaffected by atmospheric precipitation or other external influences. A conceptual model of the structure, hydrogeological character of the aquifer, and the mechanism of groundwater derivation is developed for both springs.
T2  - Hydrogeology Journal
T1  - A conceptual model of mildly alkaline water discharging from the Zlatibor ultramafic massif, western Serbia
EP  - 1163
IS  - 5
SP  - 1147
VL  - 21
DO  - 10.1007/s10040-013-0983-2
UR  - conv_1087
ER  - 

@article{
author = "Nikić, Zoran and Srecković-Batocanin, Danica and Burazer, Milenko and Ristić, Ratko and Papić, Petar and Nikolić, Vesna",
year = "2013",
abstract = "Ultramafic rocks are generally taken to be 'waterless' or bearing little water. The mountain Zlatibor, western Serbia, largely built of Upper Jurassic ultramafics, is without perennial springs. However, in Gruda, an area on the NE side of Zlatibor, there are two perennial ascending springs with uniform discharge: Bijela esma and Hajduko Vrelo. The water from both springs is naturally mildly alkaline (pH similar to 8.4), of Mg-HCO3 type, and temperature similar to 11 A degrees C. The springs have been investigated with respect to derivation, dynamics and chemistry with a view to commercial use of the water. The results indicate zones of rocks fractured during tectonic events and/or under lithostatic pressure. Deep ultramafic rocks, equivalent to abyssal peridotites (the least depleted rocks of the upper mantle, rich in magnesium), include fractured aquifers characterized by heterogeneity and anisotropy. Groundwater arriving at the land surface derives from atmospheric precipitation, and its quality is converted through the process of serpentine acid hydrolysis into mildly alkaline Mg-HCO3 water. Both quantity and quality of water from these springs are stable and are unaffected by atmospheric precipitation or other external influences. A conceptual model of the structure, hydrogeological character of the aquifer, and the mechanism of groundwater derivation is developed for both springs.",
journal = "Hydrogeology Journal",
title = "A conceptual model of mildly alkaline water discharging from the Zlatibor ultramafic massif, western Serbia",
pages = "1163-1147",
number = "5",
volume = "21",
doi = "10.1007/s10040-013-0983-2",
url = "conv_1087"
}

Nikić, Z., Srecković-Batocanin, D., Burazer, M., Ristić, R., Papić, P.,& Nikolić, V.. (2013). A conceptual model of mildly alkaline water discharging from the Zlatibor ultramafic massif, western Serbia. in Hydrogeology Journal, 21(5), 1147-1163.
https://doi.org/10.1007/s10040-013-0983-2
conv_1087

Nikić Z, Srecković-Batocanin D, Burazer M, Ristić R, Papić P, Nikolić V. A conceptual model of mildly alkaline water discharging from the Zlatibor ultramafic massif, western Serbia. in Hydrogeology Journal. 2013;21(5):1147-1163.
doi:10.1007/s10040-013-0983-2
conv_1087 .

Nikić, Zoran, Srecković-Batocanin, Danica, Burazer, Milenko, Ristić, Ratko, Papić, Petar, Nikolić, Vesna, "A conceptual model of mildly alkaline water discharging from the Zlatibor ultramafic massif, western Serbia" in Hydrogeology Journal, 21, no. 5 (2013):1147-1163,
https://doi.org/10.1007/s10040-013-0983-2 .,
conv_1087 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Letić, Ljubomir
AU  - Kovačević, Jovan
AU  - Nikolić, Vesna
PY  - 2013
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/501
AB  - Na jugozapadnim padinama Stare planine, istočno od naselja Kalna, u pojasu bukovih šuma, nalazi se rudno polje 'Janja'. U okviru ovog rudnog polja vršena je eksploatacija urana iz tri rudnika: 'Mezdreja', 'Gabrovnica' i 'Srneći Do', koji su prestali sa radom još 1966. godine. Kao posledica rudarenja, na prostoru oko ovih bivših rudnika urana, delom je narušena prirodna ekološka ravnoteža. Tereni rudnog polja 'Janja' najvećim delom su izgrađeni od granita, a obodni deo od metamorfnih stena. Analizirani su, pored ostalih i rezultati geoekoloških ispitivanja iz 1993. godine koji prikazuju koncentracije prirodnih radioaktivnih elemenata u zemljištu, aluvijalnom nanosu, na haldištima i podzemnim i površinskim vodama. Za terenska istraživanja su korišćene metode radiometrijskog premera, emanacije i hidrogeohemijskih ispitivanja, a njih je pratilo prikupljanje uzoraka za laboratorijska ispitivanja. Na osnovu rezultata geoekoloških ispitivanja, a imajući u vidu da rudarska eksploatacija urana može u dužem vremenskom periodu da naruši prirodnu ravnotežu, prikazane su koncentracije pojedinih elemenata i njihov mogući uticaj na vodu, zemljište i vazduh na istraživanom području.
AB  - Mineral field 'Janja' extends over the Southwest slope of Stara Planina Mt., eastward from the village of Kalna in the belt of beech-fir forests. Exploitation of uranium used to be performed in three mines within this area, i.e. 'Mezdreja', 'Gabrovnica', and 'Srneći Do', which are now closed down. One of the consequences of mining around these mines is partial degradation of natural balance. The greatest part of the terrain consists of granite, whereas metamorphic rocks are at the periphery. A geological survey with respect to the concentration of natural radioactive elements in the soil within the area of aforementioned mines has been conducted once so far. Alluvial sediment, ground and surface waters, as well as disposal were also examined. During the field study, radioactivity was measured and the methods of emanation and hydro-geochemical assessment were used, which was followed by collecting of samples for laboratory examination. The state of ele­ments of the environment within the surveyed area is presented hereinafter on the basis of the existing data, having in mind that exploitation of uranium may disrupt natural balance in the long run.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Stanje elemenata životne sredine u široj zoni bivših rudnika urana u slivu Trgoviškog Timoka
T1  - State of elements of the environment in the broader area of former uranium mines in the catchment of the Trgoviski Timok
EP  - 174
IS  - 107
SP  - 163
DO  - 10.2298/GSF120905003N
UR  - conv_388
ER  - 

@article{
author = "Nikić, Zoran and Letić, Ljubomir and Kovačević, Jovan and Nikolić, Vesna",
year = "2013",
abstract = "Na jugozapadnim padinama Stare planine, istočno od naselja Kalna, u pojasu bukovih šuma, nalazi se rudno polje 'Janja'. U okviru ovog rudnog polja vršena je eksploatacija urana iz tri rudnika: 'Mezdreja', 'Gabrovnica' i 'Srneći Do', koji su prestali sa radom još 1966. godine. Kao posledica rudarenja, na prostoru oko ovih bivših rudnika urana, delom je narušena prirodna ekološka ravnoteža. Tereni rudnog polja 'Janja' najvećim delom su izgrađeni od granita, a obodni deo od metamorfnih stena. Analizirani su, pored ostalih i rezultati geoekoloških ispitivanja iz 1993. godine koji prikazuju koncentracije prirodnih radioaktivnih elemenata u zemljištu, aluvijalnom nanosu, na haldištima i podzemnim i površinskim vodama. Za terenska istraživanja su korišćene metode radiometrijskog premera, emanacije i hidrogeohemijskih ispitivanja, a njih je pratilo prikupljanje uzoraka za laboratorijska ispitivanja. Na osnovu rezultata geoekoloških ispitivanja, a imajući u vidu da rudarska eksploatacija urana može u dužem vremenskom periodu da naruši prirodnu ravnotežu, prikazane su koncentracije pojedinih elemenata i njihov mogući uticaj na vodu, zemljište i vazduh na istraživanom području., Mineral field 'Janja' extends over the Southwest slope of Stara Planina Mt., eastward from the village of Kalna in the belt of beech-fir forests. Exploitation of uranium used to be performed in three mines within this area, i.e. 'Mezdreja', 'Gabrovnica', and 'Srneći Do', which are now closed down. One of the consequences of mining around these mines is partial degradation of natural balance. The greatest part of the terrain consists of granite, whereas metamorphic rocks are at the periphery. A geological survey with respect to the concentration of natural radioactive elements in the soil within the area of aforementioned mines has been conducted once so far. Alluvial sediment, ground and surface waters, as well as disposal were also examined. During the field study, radioactivity was measured and the methods of emanation and hydro-geochemical assessment were used, which was followed by collecting of samples for laboratory examination. The state of ele­ments of the environment within the surveyed area is presented hereinafter on the basis of the existing data, having in mind that exploitation of uranium may disrupt natural balance in the long run.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Stanje elemenata životne sredine u široj zoni bivših rudnika urana u slivu Trgoviškog Timoka, State of elements of the environment in the broader area of former uranium mines in the catchment of the Trgoviski Timok",
pages = "174-163",
number = "107",
doi = "10.2298/GSF120905003N",
url = "conv_388"
}

Nikić, Z., Letić, L., Kovačević, J.,& Nikolić, V.. (2013). Stanje elemenata životne sredine u široj zoni bivših rudnika urana u slivu Trgoviškog Timoka. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(107), 163-174.
https://doi.org/10.2298/GSF120905003N
conv_388

Nikić Z, Letić L, Kovačević J, Nikolić V. Stanje elemenata životne sredine u široj zoni bivših rudnika urana u slivu Trgoviškog Timoka. in Glasnik Šumarskog fakulteta. 2013;(107):163-174.
doi:10.2298/GSF120905003N
conv_388 .

Nikić, Zoran, Letić, Ljubomir, Kovačević, Jovan, Nikolić, Vesna, "Stanje elemenata životne sredine u široj zoni bivših rudnika urana u slivu Trgoviškog Timoka" in Glasnik Šumarskog fakulteta, no. 107 (2013):163-174,
https://doi.org/10.2298/GSF120905003N .,
conv_388 .

TY  - JOUR
AU  - Ristić, Ratko
AU  - Ljujić, Milanko
AU  - Despotović, Jovan
AU  - Aleksić, Velimir
AU  - Radić, Boris
AU  - Nikić, Zoran
AU  - Milčanović, Vukašin
AU  - Malušević, Ivan
AU  - Radonjić, Jasmina
PY  - 2013
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/520
AB  - Dams have always been a precious means of collecting, storage and managing of water resources throughout history. Today, there are about 845000 dams with a total volume of about 6000 km(3). Reservoir sedimentation is a very complex problem both worldwide and in Serbia. Natural conditions and anthropogenic activities have strong influence on sedimentation intensity and hydrological processes, which is represented at the experimental watershed of the Dicina River, in Western Serbia. Reservoir of 340000 m(3) was formed after construction of a 17 m high dam, in 1966. Sedimentation of the "Velika Dicina" reservoire was determined on the basis of a survey from October 1966 to October 2011, along longitudinal profile, 750 m upstream from the dam, with 15 cross section profiles (at a spacing of 50 m). Land use changes were analyzed on the basis of a comparison of watershed conditions in 1966 and 2012, using the CORINE methodology and the MapInfo software. Sediment yield of the area and intensity of erosion processes were estimated on the basis of the "Erosion Potential Method" (EPM). The hydrological conditions in 1966 and 2012 (after the performed Erosion and Torrent Control Works-ETCWs) were assessed on the basis of a historical overview of land use changes and their impact on computed maximal discharges. Total quantity of deposited sediment in the reservoir amounts to 18750 m(3). Intensity of sedimentation has continuously been decreasing since 2002 as the consequence of land use changes, performed ETCWs and depopulation. The values of computed maximal discharges and volumes of computed hydrographs are significantly reduced. Depopulation caused a decrease in the anthropogenic pressure on the agricultural and forest surfaces in the watershed. The realization of restoration works contributed to a decrease in the annual yield of erosive material from W-a=16007 m(3) to W-a=1930 m(3).
T2  - Carpathian Journal of Earth and Environmental Sciences
T1  - Reservoir sedimentation and hydrological effects of land use changes-case study of the experimental Dicina river watershed
EP  - 98
IS  - 1
SP  - 91
VL  - 8
UR  - conv_2172
ER  - 

@article{
author = "Ristić, Ratko and Ljujić, Milanko and Despotović, Jovan and Aleksić, Velimir and Radić, Boris and Nikić, Zoran and Milčanović, Vukašin and Malušević, Ivan and Radonjić, Jasmina",
year = "2013",
abstract = "Dams have always been a precious means of collecting, storage and managing of water resources throughout history. Today, there are about 845000 dams with a total volume of about 6000 km(3). Reservoir sedimentation is a very complex problem both worldwide and in Serbia. Natural conditions and anthropogenic activities have strong influence on sedimentation intensity and hydrological processes, which is represented at the experimental watershed of the Dicina River, in Western Serbia. Reservoir of 340000 m(3) was formed after construction of a 17 m high dam, in 1966. Sedimentation of the "Velika Dicina" reservoire was determined on the basis of a survey from October 1966 to October 2011, along longitudinal profile, 750 m upstream from the dam, with 15 cross section profiles (at a spacing of 50 m). Land use changes were analyzed on the basis of a comparison of watershed conditions in 1966 and 2012, using the CORINE methodology and the MapInfo software. Sediment yield of the area and intensity of erosion processes were estimated on the basis of the "Erosion Potential Method" (EPM). The hydrological conditions in 1966 and 2012 (after the performed Erosion and Torrent Control Works-ETCWs) were assessed on the basis of a historical overview of land use changes and their impact on computed maximal discharges. Total quantity of deposited sediment in the reservoir amounts to 18750 m(3). Intensity of sedimentation has continuously been decreasing since 2002 as the consequence of land use changes, performed ETCWs and depopulation. The values of computed maximal discharges and volumes of computed hydrographs are significantly reduced. Depopulation caused a decrease in the anthropogenic pressure on the agricultural and forest surfaces in the watershed. The realization of restoration works contributed to a decrease in the annual yield of erosive material from W-a=16007 m(3) to W-a=1930 m(3).",
journal = "Carpathian Journal of Earth and Environmental Sciences",
title = "Reservoir sedimentation and hydrological effects of land use changes-case study of the experimental Dicina river watershed",
pages = "98-91",
number = "1",
volume = "8",
url = "conv_2172"
}

Ristić, R., Ljujić, M., Despotović, J., Aleksić, V., Radić, B., Nikić, Z., Milčanović, V., Malušević, I.,& Radonjić, J.. (2013). Reservoir sedimentation and hydrological effects of land use changes-case study of the experimental Dicina river watershed. in Carpathian Journal of Earth and Environmental Sciences, 8(1), 91-98.
conv_2172

Ristić R, Ljujić M, Despotović J, Aleksić V, Radić B, Nikić Z, Milčanović V, Malušević I, Radonjić J. Reservoir sedimentation and hydrological effects of land use changes-case study of the experimental Dicina river watershed. in Carpathian Journal of Earth and Environmental Sciences. 2013;8(1):91-98.
conv_2172 .

Ristić, Ratko, Ljujić, Milanko, Despotović, Jovan, Aleksić, Velimir, Radić, Boris, Nikić, Zoran, Milčanović, Vukašin, Malušević, Ivan, Radonjić, Jasmina, "Reservoir sedimentation and hydrological effects of land use changes-case study of the experimental Dicina river watershed" in Carpathian Journal of Earth and Environmental Sciences, 8, no. 1 (2013):91-98,
conv_2172 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Letić, Ljubomir
AU  - Nikolić, Vesna
PY  - 2012
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/457
AB  - Istraživano je formiranje i oticanje korisnih voda sa jugozapadnih padina Stare planine, na prostoru Visokog kraja, kao tipičnog brdsko-planinskog područja istočne Srbije. Izdvojen je sliv Dojkinačke reke, zbog niza edafskih specifičnosti. U ovom slivu dominiraju šume bukve (pojas Fagetum moesiacea serbicum Rud.) uglavnom razvijene na kiselo humusno-silikatnom i kiselo smeđem zemljištu, različite dubine i stepena razvoja pedogenetskih procesa. Cilj rada jeste da se usmeri više svetlosti na elemente koji imaju uticaja na prinos korisnih i malih voda u slivu Dojkinačke reke. Analizirani su složeni odnosi geološke građe terena, zatim, klimatske prilike, pedološke karakteristike, hidrološki i hidrogeološki uslovi, šumska vegetacija i drugo. Korišćenjem metoda vodnog bilansiranja, terenskog geološkog kartiranja i trasiranja, detektovani su elementi koji su značajni za pravilno tumačenje prinosa korisnih voda i malih voda u konkretnom slučaju. Istaknuto je da nepodudaranje topografskog i hidrogeološkog slivnog područja Dojkinačke reke, predstavlja bitan element koji treba respektovati u cilju realnog određivanja količina korisnih, odnosno malih, voda.
AB  - Formation and discharge of useful waters was studied on southwestern slopes of the Stara Planina Mountain, in the area Visok Kraj that is the typical hilly-mountainous region in East Serbia. The catchment's area of Dojkinacka River was chosen due to numerous and specific edaphic properties. Pump forests (association: Fagetum moesiacea serbicum Rud.) dominate here and were mostly developed on slightly acidic, humus-silicate or on acidic brownish soil. Soils are of a range of depths and development of pedogenetic processes. The aim of this work is to highlight elements that have pronounced influence on supply of useful and small water bodies in the catchment area of Dojkinacka River. Complex relations between geological setting, climate conditions, pedological characteristics, hydrological and hydrogeological conditions, forest vegetation etc. were analyzed. Elements that are significant for proper evaluation of useful water or small domains supply were in this case detected through water balance methods, geological mapping and tracking. It was deduced that the disagreement of topographic and hydrological catchment's area of Dojkinacka River represents the significant element which should be taken into consideration in order to determine the real reserves of useful, i.e. small water domains.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Formiranje korisnih voda na Staroj planini u oblasti Visok Kraj
T1  - Formation of useful waters on the Stara Planina Mountain, in the area Visok Kraj
EP  - 156
IS  - 105
SP  - 139
DO  - 10.2298/GSF110919001N
UR  - conv_362
ER  - 

@article{
author = "Nikić, Zoran and Letić, Ljubomir and Nikolić, Vesna",
year = "2012",
abstract = "Istraživano je formiranje i oticanje korisnih voda sa jugozapadnih padina Stare planine, na prostoru Visokog kraja, kao tipičnog brdsko-planinskog područja istočne Srbije. Izdvojen je sliv Dojkinačke reke, zbog niza edafskih specifičnosti. U ovom slivu dominiraju šume bukve (pojas Fagetum moesiacea serbicum Rud.) uglavnom razvijene na kiselo humusno-silikatnom i kiselo smeđem zemljištu, različite dubine i stepena razvoja pedogenetskih procesa. Cilj rada jeste da se usmeri više svetlosti na elemente koji imaju uticaja na prinos korisnih i malih voda u slivu Dojkinačke reke. Analizirani su složeni odnosi geološke građe terena, zatim, klimatske prilike, pedološke karakteristike, hidrološki i hidrogeološki uslovi, šumska vegetacija i drugo. Korišćenjem metoda vodnog bilansiranja, terenskog geološkog kartiranja i trasiranja, detektovani su elementi koji su značajni za pravilno tumačenje prinosa korisnih voda i malih voda u konkretnom slučaju. Istaknuto je da nepodudaranje topografskog i hidrogeološkog slivnog područja Dojkinačke reke, predstavlja bitan element koji treba respektovati u cilju realnog određivanja količina korisnih, odnosno malih, voda., Formation and discharge of useful waters was studied on southwestern slopes of the Stara Planina Mountain, in the area Visok Kraj that is the typical hilly-mountainous region in East Serbia. The catchment's area of Dojkinacka River was chosen due to numerous and specific edaphic properties. Pump forests (association: Fagetum moesiacea serbicum Rud.) dominate here and were mostly developed on slightly acidic, humus-silicate or on acidic brownish soil. Soils are of a range of depths and development of pedogenetic processes. The aim of this work is to highlight elements that have pronounced influence on supply of useful and small water bodies in the catchment area of Dojkinacka River. Complex relations between geological setting, climate conditions, pedological characteristics, hydrological and hydrogeological conditions, forest vegetation etc. were analyzed. Elements that are significant for proper evaluation of useful water or small domains supply were in this case detected through water balance methods, geological mapping and tracking. It was deduced that the disagreement of topographic and hydrological catchment's area of Dojkinacka River represents the significant element which should be taken into consideration in order to determine the real reserves of useful, i.e. small water domains.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Formiranje korisnih voda na Staroj planini u oblasti Visok Kraj, Formation of useful waters on the Stara Planina Mountain, in the area Visok Kraj",
pages = "156-139",
number = "105",
doi = "10.2298/GSF110919001N",
url = "conv_362"
}

Nikić, Z., Letić, L.,& Nikolić, V.. (2012). Formiranje korisnih voda na Staroj planini u oblasti Visok Kraj. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(105), 139-156.
https://doi.org/10.2298/GSF110919001N
conv_362

Nikić Z, Letić L, Nikolić V. Formiranje korisnih voda na Staroj planini u oblasti Visok Kraj. in Glasnik Šumarskog fakulteta. 2012;(105):139-156.
doi:10.2298/GSF110919001N
conv_362 .

Nikić, Zoran, Letić, Ljubomir, Nikolić, Vesna, "Formiranje korisnih voda na Staroj planini u oblasti Visok Kraj" in Glasnik Šumarskog fakulteta, no. 105 (2012):139-156,
https://doi.org/10.2298/GSF110919001N .,
conv_362 .

TY  - JOUR
AU  - Ristić, Ratko
AU  - Kasanin-Grubin, Milica
AU  - Radić, Boris
AU  - Nikić, Zoran
AU  - Vasiljević, Nevena
PY  - 2012
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/421
AB  - The environmental impacts of ski resorts in the Balkan region are great and can lead to landscape degradation and loss of land functionality. In this study, we present an example of the negative effects of human activities at the Stara Planina ski resort in southeastern Serbia. The objective of this study is detailed analysis of the characteristics of environmental impacts at the Stara Planina. The management of the ski area and ski slope development caused severe degradation of topsoil and native vegetation. The morphological characteristics of the area, lithological properties of the exposed material and climate conditions resulted in various geomorphic impacts, including rills, deep gullies, solifluctions and debris from rock weathering. Significant changes in land usage altered hydrological conditions, resulting in more frequent torrential floods in the downstream sections of the Zubska River and increased the sediment yield. Environmental impacts were analyzed in the immediate and wider zones of the ski resort in accordance with the specific topography and visual exposure. The restoration and erosion control measures have stopped degradation processes and helped to rehabilitate the appearance and functions of the landscape. The results show the importance of considering lithological (the type and characteristics of minerals present) and hydrological (precipitation, water storage capacity of soil, runoff) factors under the conditions of significant changes in land usage. The results of this investigation can contribute to the improvement of planning processes and the implementation of development projects in ski areas.
T2  - Environmental Management
T1  - Land Degradation at the Stara Planina Ski Resort
EP  - 592
IS  - 3
SP  - 580
VL  - 49
DO  - 10.1007/s00267-012-9812-y
UR  - conv_1005
ER  - 

@article{
author = "Ristić, Ratko and Kasanin-Grubin, Milica and Radić, Boris and Nikić, Zoran and Vasiljević, Nevena",
year = "2012",
abstract = "The environmental impacts of ski resorts in the Balkan region are great and can lead to landscape degradation and loss of land functionality. In this study, we present an example of the negative effects of human activities at the Stara Planina ski resort in southeastern Serbia. The objective of this study is detailed analysis of the characteristics of environmental impacts at the Stara Planina. The management of the ski area and ski slope development caused severe degradation of topsoil and native vegetation. The morphological characteristics of the area, lithological properties of the exposed material and climate conditions resulted in various geomorphic impacts, including rills, deep gullies, solifluctions and debris from rock weathering. Significant changes in land usage altered hydrological conditions, resulting in more frequent torrential floods in the downstream sections of the Zubska River and increased the sediment yield. Environmental impacts were analyzed in the immediate and wider zones of the ski resort in accordance with the specific topography and visual exposure. The restoration and erosion control measures have stopped degradation processes and helped to rehabilitate the appearance and functions of the landscape. The results show the importance of considering lithological (the type and characteristics of minerals present) and hydrological (precipitation, water storage capacity of soil, runoff) factors under the conditions of significant changes in land usage. The results of this investigation can contribute to the improvement of planning processes and the implementation of development projects in ski areas.",
journal = "Environmental Management",
title = "Land Degradation at the Stara Planina Ski Resort",
pages = "592-580",
number = "3",
volume = "49",
doi = "10.1007/s00267-012-9812-y",
url = "conv_1005"
}

Ristić, R., Kasanin-Grubin, M., Radić, B., Nikić, Z.,& Vasiljević, N.. (2012). Land Degradation at the Stara Planina Ski Resort. in Environmental Management, 49(3), 580-592.
https://doi.org/10.1007/s00267-012-9812-y
conv_1005

Ristić R, Kasanin-Grubin M, Radić B, Nikić Z, Vasiljević N. Land Degradation at the Stara Planina Ski Resort. in Environmental Management. 2012;49(3):580-592.
doi:10.1007/s00267-012-9812-y
conv_1005 .

Ristić, Ratko, Kasanin-Grubin, Milica, Radić, Boris, Nikić, Zoran, Vasiljević, Nevena, "Land Degradation at the Stara Planina Ski Resort" in Environmental Management, 49, no. 3 (2012):580-592,
https://doi.org/10.1007/s00267-012-9812-y .,
conv_1005 .

TY  - JOUR
AU  - Ocokoljić, Mirjana
AU  - Nikić, Zoran
AU  - Medarević, Milan
AU  - Čavlović, Dragana
PY  - 2011
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/350
AB  - Horse chestnut (Hippocastani semen) seed is an important raw material for the pharmaceutical industry because it contains a series of biologically active substances: starch (30 to 40%), saponins (10%), fatty oil (5.5%), proteins (6%), cellulose (2%), reductive sugars (5.5%) and ash (1.3%). However, the variability of fatty oil content in horse chestnut seed (H. oleum) has been insufficiently investigated. This study was performed in populations of horse chestnut trees in towns of Serbia and in the plantation on Mt. Avala. The seeds were collected from 15 test trees of each locality. The content of fatty oil in the seed cotyledons was determined by extraction with petrol ether in the apparatus after Soxlet. Fatty acids were determined and identified in the fatty oil. The analysis was performed by the method of gas chromatography (by the gas chromatograph "Varian" model 1400 with flame ionising detector). The presence of ten fatty acids was determined: myristic, palmitic, palmitoleic, stearic, oleic, linoleic, arachic, linolenic, eicosenoic and erucic acids. Based on the results, it can be concluded that horse chestnut seed, according to fatty oil content, composition and representation of individual fatty acids, is a significant raw material for pharmaceutical and chemical industries.
T2  - African Journal of Biotechnology
T1  - Effect of horse chestnut tree genotype on production of fatty oil and fatty acids in seed cotyledons
EP  - 1935
IS  - 10
SP  - 1932
VL  - 10
UR  - conv_2233
ER  - 

@article{
author = "Ocokoljić, Mirjana and Nikić, Zoran and Medarević, Milan and Čavlović, Dragana",
year = "2011",
abstract = "Horse chestnut (Hippocastani semen) seed is an important raw material for the pharmaceutical industry because it contains a series of biologically active substances: starch (30 to 40%), saponins (10%), fatty oil (5.5%), proteins (6%), cellulose (2%), reductive sugars (5.5%) and ash (1.3%). However, the variability of fatty oil content in horse chestnut seed (H. oleum) has been insufficiently investigated. This study was performed in populations of horse chestnut trees in towns of Serbia and in the plantation on Mt. Avala. The seeds were collected from 15 test trees of each locality. The content of fatty oil in the seed cotyledons was determined by extraction with petrol ether in the apparatus after Soxlet. Fatty acids were determined and identified in the fatty oil. The analysis was performed by the method of gas chromatography (by the gas chromatograph "Varian" model 1400 with flame ionising detector). The presence of ten fatty acids was determined: myristic, palmitic, palmitoleic, stearic, oleic, linoleic, arachic, linolenic, eicosenoic and erucic acids. Based on the results, it can be concluded that horse chestnut seed, according to fatty oil content, composition and representation of individual fatty acids, is a significant raw material for pharmaceutical and chemical industries.",
journal = "African Journal of Biotechnology",
title = "Effect of horse chestnut tree genotype on production of fatty oil and fatty acids in seed cotyledons",
pages = "1935-1932",
number = "10",
volume = "10",
url = "conv_2233"
}

Ocokoljić, M., Nikić, Z., Medarević, M.,& Čavlović, D.. (2011). Effect of horse chestnut tree genotype on production of fatty oil and fatty acids in seed cotyledons. in African Journal of Biotechnology, 10(10), 1932-1935.
conv_2233

Ocokoljić M, Nikić Z, Medarević M, Čavlović D. Effect of horse chestnut tree genotype on production of fatty oil and fatty acids in seed cotyledons. in African Journal of Biotechnology. 2011;10(10):1932-1935.
conv_2233 .

Ocokoljić, Mirjana, Nikić, Zoran, Medarević, Milan, Čavlović, Dragana, "Effect of horse chestnut tree genotype on production of fatty oil and fatty acids in seed cotyledons" in African Journal of Biotechnology, 10, no. 10 (2011):1932-1935,
conv_2233 .

TY  - JOUR
AU  - Ristić, Ratko
AU  - Marković, Aleksandar
AU  - Radić, Boris
AU  - Nikić, Zoran
AU  - Vasiljević, Nevena
AU  - Živković, Nenad
AU  - Dragićević, Slavoljub
PY  - 2011
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/389
AB  - Construction or improvement of Serbian ski resorts produced numerous negative effects to surrounding environment, endangering even the functionality of the built objects. Investigation involved the analysis of disturbing activities by phases, and consequential environmental impacts. Clear cuttings, trunk transport, machine grading of slopes, huge excavations, and access road construction, caused the strongest pressure to the environment. Follow up activities during skiing and non skiing periods: skiing, usage of snow groomers, moving of vehicles and tourists, forestry activities and overgrazing. Consequential environmental impacts are clearly noticeable through intensive erosion processes, changes of hydrological conditions and forest fragmentation. The most affected ski runs were surveyed (scale 1:1000), all damages were mapped and classified during the summers of 2007-2010. Development of rills and gullies was measured at experimental plots (100x60 m), integrating survey data into GIS application. Changes of hydrological conditions were estimated on computations of maximal discharges before and after the construction of ski resorts, as well as using,local hydrological records. Forest fragmentation is studied on the basis of detailed survey and field work.
T2  - Carpathian Journal of Earth and Environmental Sciences
T1  - Environmental impacts in Serbian ski resorts
EP  - 134
IS  - 2
SP  - 125
VL  - 6
UR  - conv_987
ER  - 

@article{
author = "Ristić, Ratko and Marković, Aleksandar and Radić, Boris and Nikić, Zoran and Vasiljević, Nevena and Živković, Nenad and Dragićević, Slavoljub",
year = "2011",
abstract = "Construction or improvement of Serbian ski resorts produced numerous negative effects to surrounding environment, endangering even the functionality of the built objects. Investigation involved the analysis of disturbing activities by phases, and consequential environmental impacts. Clear cuttings, trunk transport, machine grading of slopes, huge excavations, and access road construction, caused the strongest pressure to the environment. Follow up activities during skiing and non skiing periods: skiing, usage of snow groomers, moving of vehicles and tourists, forestry activities and overgrazing. Consequential environmental impacts are clearly noticeable through intensive erosion processes, changes of hydrological conditions and forest fragmentation. The most affected ski runs were surveyed (scale 1:1000), all damages were mapped and classified during the summers of 2007-2010. Development of rills and gullies was measured at experimental plots (100x60 m), integrating survey data into GIS application. Changes of hydrological conditions were estimated on computations of maximal discharges before and after the construction of ski resorts, as well as using,local hydrological records. Forest fragmentation is studied on the basis of detailed survey and field work.",
journal = "Carpathian Journal of Earth and Environmental Sciences",
title = "Environmental impacts in Serbian ski resorts",
pages = "134-125",
number = "2",
volume = "6",
url = "conv_987"
}

Ristić, R., Marković, A., Radić, B., Nikić, Z., Vasiljević, N., Živković, N.,& Dragićević, S.. (2011). Environmental impacts in Serbian ski resorts. in Carpathian Journal of Earth and Environmental Sciences, 6(2), 125-134.
conv_987

Ristić R, Marković A, Radić B, Nikić Z, Vasiljević N, Živković N, Dragićević S. Environmental impacts in Serbian ski resorts. in Carpathian Journal of Earth and Environmental Sciences. 2011;6(2):125-134.
conv_987 .

Ristić, Ratko, Marković, Aleksandar, Radić, Boris, Nikić, Zoran, Vasiljević, Nevena, Živković, Nenad, Dragićević, Slavoljub, "Environmental impacts in Serbian ski resorts" in Carpathian Journal of Earth and Environmental Sciences, 6, no. 2 (2011):125-134,
conv_987 .

TY  - JOUR
AU  - Ristić, Ratko
AU  - Radić, Boris
AU  - Nikić, Zoran
AU  - Trivan, Goran
AU  - Vasiljević, Nevena
AU  - Dragićević, Slavoljub
AU  - Živković, Nenad
AU  - Radosavljević, Zoran
PY  - 2011
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/352
AB  - Torrential floods represent the most frequent phenomenon within the category of 'natural risks' in Serbia. The representative examples are the torrential floods on the experimental watersheds of the rivers Manastirica (June 1996) and Kamišna (May 2007). Hystorical maximal discharges (Qmaxh) were reconstructed by use of 'hydraulics flood traces' method. Computations of maximal discharges (Qmaxc), under hydrological conditions after the restoration of the watersheds, were performed by use of a synthetic unit hydrograph theory and Soil Conservation Service methodology. Area sediment yields and intensity of erosion processes were estimated on the basis of the 'Erosion Potential Method'. The actual state of erosion processes is represented by the coefficients of erosion Z=0.475 (Manastirica) and Z=0.470 (Kamišna). Restoration works have been planned with a view to decreasing yields of erosive material, increasing water infiltration capacity and reducing flood runoff. The planned state of erosion processes is represented by the coefficients of erosion Z=0.343 (Manastirica) and Z=0.385 (Kamišna). The effects of hydrological changes were estimated by the comparison of historical maximal discharges and computed maximal discharges (under the conditions after the planned restoration). The realisation of restoration works will help decrease annual yields of erosive material from Wa=24357 m3 to Wa=16198.0 m3 (Manastirica) and from Wa=19974 m3 to Wa=14434 m3 (Kamišna). The values of historical maximal discharges (QmaxhMan=154.9 m3·s-1; QmaxhKam=76.3 m3·s-1) were significantly decreased after the restoration (QmaxcMan=84.5 m3 ·s-1; QmaxcKam=43.7 m3·s-1), indicating the improvement of hydrological conditions, as a direct consequence of erosion and torrent control works. Integrated management involves biotechnical works on the watershed, technical works on the hydrographic network within a precisely defined administrative and spatial framework in order to achieve maximum security for people and their property and to meet other requirements such as: environmental protection, sustainable soil usage, drinking water supply, rural development, biodiversity sustaining, etc. The lowest and the most effective level is attained through PAERs (Plans for announcement of erosive regions) and PPTFs (Plans for protection from torrential floods), with HZs (Hazard zones) and TAs (Threatened areas) mapping on the basis of spatial analysis of important factors in torrential floods formation. Solutions defined through PAERs and PPTFs must be integrated into Spatial Plans at local and regional levels.
PB  - Institut za arhitekturu i urbanizam Srbije, Beograd
T2  - Spatium
T1  - Erosion control and protection from torrential floods in Serbia-spatial aspects
EP  - 6
IS  - 25
SP  - 1
DO  - 10.2298/SPAT1125001R
UR  - conv_2195
ER  - 

@article{
author = "Ristić, Ratko and Radić, Boris and Nikić, Zoran and Trivan, Goran and Vasiljević, Nevena and Dragićević, Slavoljub and Živković, Nenad and Radosavljević, Zoran",
year = "2011",
abstract = "Torrential floods represent the most frequent phenomenon within the category of 'natural risks' in Serbia. The representative examples are the torrential floods on the experimental watersheds of the rivers Manastirica (June 1996) and Kamišna (May 2007). Hystorical maximal discharges (Qmaxh) were reconstructed by use of 'hydraulics flood traces' method. Computations of maximal discharges (Qmaxc), under hydrological conditions after the restoration of the watersheds, were performed by use of a synthetic unit hydrograph theory and Soil Conservation Service methodology. Area sediment yields and intensity of erosion processes were estimated on the basis of the 'Erosion Potential Method'. The actual state of erosion processes is represented by the coefficients of erosion Z=0.475 (Manastirica) and Z=0.470 (Kamišna). Restoration works have been planned with a view to decreasing yields of erosive material, increasing water infiltration capacity and reducing flood runoff. The planned state of erosion processes is represented by the coefficients of erosion Z=0.343 (Manastirica) and Z=0.385 (Kamišna). The effects of hydrological changes were estimated by the comparison of historical maximal discharges and computed maximal discharges (under the conditions after the planned restoration). The realisation of restoration works will help decrease annual yields of erosive material from Wa=24357 m3 to Wa=16198.0 m3 (Manastirica) and from Wa=19974 m3 to Wa=14434 m3 (Kamišna). The values of historical maximal discharges (QmaxhMan=154.9 m3·s-1; QmaxhKam=76.3 m3·s-1) were significantly decreased after the restoration (QmaxcMan=84.5 m3 ·s-1; QmaxcKam=43.7 m3·s-1), indicating the improvement of hydrological conditions, as a direct consequence of erosion and torrent control works. Integrated management involves biotechnical works on the watershed, technical works on the hydrographic network within a precisely defined administrative and spatial framework in order to achieve maximum security for people and their property and to meet other requirements such as: environmental protection, sustainable soil usage, drinking water supply, rural development, biodiversity sustaining, etc. The lowest and the most effective level is attained through PAERs (Plans for announcement of erosive regions) and PPTFs (Plans for protection from torrential floods), with HZs (Hazard zones) and TAs (Threatened areas) mapping on the basis of spatial analysis of important factors in torrential floods formation. Solutions defined through PAERs and PPTFs must be integrated into Spatial Plans at local and regional levels.",
publisher = "Institut za arhitekturu i urbanizam Srbije, Beograd",
journal = "Spatium",
title = "Erosion control and protection from torrential floods in Serbia-spatial aspects",
pages = "6-1",
number = "25",
doi = "10.2298/SPAT1125001R",
url = "conv_2195"
}

Ristić, R., Radić, B., Nikić, Z., Trivan, G., Vasiljević, N., Dragićević, S., Živković, N.,& Radosavljević, Z.. (2011). Erosion control and protection from torrential floods in Serbia-spatial aspects. in Spatium
Institut za arhitekturu i urbanizam Srbije, Beograd.(25), 1-6.
https://doi.org/10.2298/SPAT1125001R
conv_2195

Ristić R, Radić B, Nikić Z, Trivan G, Vasiljević N, Dragićević S, Živković N, Radosavljević Z. Erosion control and protection from torrential floods in Serbia-spatial aspects. in Spatium. 2011;(25):1-6.
doi:10.2298/SPAT1125001R
conv_2195 .

Ristić, Ratko, Radić, Boris, Nikić, Zoran, Trivan, Goran, Vasiljević, Nevena, Dragićević, Slavoljub, Živković, Nenad, Radosavljević, Zoran, "Erosion control and protection from torrential floods in Serbia-spatial aspects" in Spatium, no. 25 (2011):1-6,
https://doi.org/10.2298/SPAT1125001R .,
conv_2195 .

TY  - JOUR
AU  - Ristić, Ratko
AU  - Radić, Boris
AU  - Vasiljević, Nevena
AU  - Nikić, Zoran
PY  - 2011
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/379
AB  - Brdsko-planinska područja Srbije izložena su destruktivnom dejstvu poplava, što je posledica njihovih prirodnih karakteristika i uticaja ljudskog faktora. Neodgovarajuće korišćenje zemljišta utiče na razvoj erozionih procesa usled čega dolazi do degradacije, smanjenja infiltraciono- retencionog kapaciteta, odnosno, povećavaju se nepropusne i slabo propusne na račun propusnih površina. Na taj način se stvaraju uslovi za češću pojavu bujičnih poplava i deponovanje vučenog nanosa na nizvodnim deonicama. Degradacija životne sredine stvara ekonomsko-socijalne probleme u okviru lokalnih zajednica što često prati depopulacija. Restauracija slivova, do njihovog optimalnog hidrološkog stanja, bi smanjila poplavni proticaj i poboljšala obnavljanje rezervi podzemnih voda, uz povećanje malog i srednjeg proticaja na izvorima i potocima. Prakse najboljeg upravljanja bi se mogle razraditi primenom specifičnih kombinacija biotehničkih, tehničkih i administrativnih mera i koncepta 'prirodnih rezervoara'. Kreiranje takve prakse upravljanja je istraženo u studiji slučaja sliva reke Jelašnice u jugoistočnoj Srbiji. Realizacija planiranih restauracionih zahvata bi trebalo da dovede do smanjenja godišnje produkcije erozionog materijala za 44.1% i specifičnog godišnjeg pronosa nanosa kroz hidrografsku mrežu za 43.6%. Reprezentativna vrednost koeficijenta erozije biće redukovana sa Z=0,555 na Z=0,379. Vrednost maksimalnog proticaja Qmax-AMCIII (1%)=54,17 m3·s-1, pre restauracije smanjena je na Qmax-AMCIII (1%)=41,22 m3·s-1 posle restauracije, što ukazuje na poboljšanje hidroloških uslova kao direktnu posledicu promene načina korišćenja zemljišta. Administrativne mere se primenjuju kroz 'Planove za proglašenje erozionih područja i zaštitu od bujičnih poplava na teritoriji opštine Leskovac'.
AB  - Serbia's hilly-mountainous regions are extremely vulnerable to flooding as a consequence of their natural characteristics and human impacts. Land mismanagement influences the development of erosion processes, and causes soil degradation that significantly reduces the land's capacity to infiltrate and retain rainwater. Inappropriate land use as well as development activities replace permeable with impervious surfaces in the watershed. This leads to more rapid runoff generation and the more frequent appearance of torrential floods and bed-load deposits on downstream sections. Environmental degradation creates economicsocial problems within local societies which is often followed by depopulation. Restoring watersheds to their optimal hydrologic state would reduce flood discharge and by increasing groundwater recharge would increase both low-flow and average discharges in springs and streams. Best management practices could be developed through the application of specific combinations of biotechnical, technical and administrative measures, and by using the concept of 'natural reservoirs'. The design of such practices is explored through a case study of the watershed of the river Jelašnica, southeastern Serbia. Realization of these planned restoration works should help decrease the annual yields of erosive material by 44.1% and the specific annual transport of sediment through hydrographic network by 43.6%. Representative value of the coefficient of erosion will be reduced from Z=0.555 to Z=0.379. The value of maximal discharge Qmax-AMCIII (1%)=54.17 m3·s-1, before restoration, is decreased to Qmax-AMCIII (1%)=41.22 m3·s-1 after restoration, indicating the improvement of hydrological conditions, as a direct consequence of land use changes. Administrative measures are applied through 'Plans for announcement of erosive regions and protection from torrential floods in the territory of Leskovac municipality'.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Promene načina korišćenja zemljišta i odbrana od poplava - primer sliva reke Jelašnice
T1  - Land use change for flood protection: A prospective study for the restoration of the river Jelašnica watershed
EP  - 130
IS  - 103
SP  - 115
DO  - 10.2298/GSF1103115R
UR  - conv_337
ER  - 

@article{
author = "Ristić, Ratko and Radić, Boris and Vasiljević, Nevena and Nikić, Zoran",
year = "2011",
abstract = "Brdsko-planinska područja Srbije izložena su destruktivnom dejstvu poplava, što je posledica njihovih prirodnih karakteristika i uticaja ljudskog faktora. Neodgovarajuće korišćenje zemljišta utiče na razvoj erozionih procesa usled čega dolazi do degradacije, smanjenja infiltraciono- retencionog kapaciteta, odnosno, povećavaju se nepropusne i slabo propusne na račun propusnih površina. Na taj način se stvaraju uslovi za češću pojavu bujičnih poplava i deponovanje vučenog nanosa na nizvodnim deonicama. Degradacija životne sredine stvara ekonomsko-socijalne probleme u okviru lokalnih zajednica što često prati depopulacija. Restauracija slivova, do njihovog optimalnog hidrološkog stanja, bi smanjila poplavni proticaj i poboljšala obnavljanje rezervi podzemnih voda, uz povećanje malog i srednjeg proticaja na izvorima i potocima. Prakse najboljeg upravljanja bi se mogle razraditi primenom specifičnih kombinacija biotehničkih, tehničkih i administrativnih mera i koncepta 'prirodnih rezervoara'. Kreiranje takve prakse upravljanja je istraženo u studiji slučaja sliva reke Jelašnice u jugoistočnoj Srbiji. Realizacija planiranih restauracionih zahvata bi trebalo da dovede do smanjenja godišnje produkcije erozionog materijala za 44.1% i specifičnog godišnjeg pronosa nanosa kroz hidrografsku mrežu za 43.6%. Reprezentativna vrednost koeficijenta erozije biće redukovana sa Z=0,555 na Z=0,379. Vrednost maksimalnog proticaja Qmax-AMCIII (1%)=54,17 m3·s-1, pre restauracije smanjena je na Qmax-AMCIII (1%)=41,22 m3·s-1 posle restauracije, što ukazuje na poboljšanje hidroloških uslova kao direktnu posledicu promene načina korišćenja zemljišta. Administrativne mere se primenjuju kroz 'Planove za proglašenje erozionih područja i zaštitu od bujičnih poplava na teritoriji opštine Leskovac'., Serbia's hilly-mountainous regions are extremely vulnerable to flooding as a consequence of their natural characteristics and human impacts. Land mismanagement influences the development of erosion processes, and causes soil degradation that significantly reduces the land's capacity to infiltrate and retain rainwater. Inappropriate land use as well as development activities replace permeable with impervious surfaces in the watershed. This leads to more rapid runoff generation and the more frequent appearance of torrential floods and bed-load deposits on downstream sections. Environmental degradation creates economicsocial problems within local societies which is often followed by depopulation. Restoring watersheds to their optimal hydrologic state would reduce flood discharge and by increasing groundwater recharge would increase both low-flow and average discharges in springs and streams. Best management practices could be developed through the application of specific combinations of biotechnical, technical and administrative measures, and by using the concept of 'natural reservoirs'. The design of such practices is explored through a case study of the watershed of the river Jelašnica, southeastern Serbia. Realization of these planned restoration works should help decrease the annual yields of erosive material by 44.1% and the specific annual transport of sediment through hydrographic network by 43.6%. Representative value of the coefficient of erosion will be reduced from Z=0.555 to Z=0.379. The value of maximal discharge Qmax-AMCIII (1%)=54.17 m3·s-1, before restoration, is decreased to Qmax-AMCIII (1%)=41.22 m3·s-1 after restoration, indicating the improvement of hydrological conditions, as a direct consequence of land use changes. Administrative measures are applied through 'Plans for announcement of erosive regions and protection from torrential floods in the territory of Leskovac municipality'.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Promene načina korišćenja zemljišta i odbrana od poplava - primer sliva reke Jelašnice, Land use change for flood protection: A prospective study for the restoration of the river Jelašnica watershed",
pages = "130-115",
number = "103",
doi = "10.2298/GSF1103115R",
url = "conv_337"
}

Ristić, R., Radić, B., Vasiljević, N.,& Nikić, Z.. (2011). Promene načina korišćenja zemljišta i odbrana od poplava - primer sliva reke Jelašnice. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(103), 115-130.
https://doi.org/10.2298/GSF1103115R
conv_337

Ristić R, Radić B, Vasiljević N, Nikić Z. Promene načina korišćenja zemljišta i odbrana od poplava - primer sliva reke Jelašnice. in Glasnik Šumarskog fakulteta. 2011;(103):115-130.
doi:10.2298/GSF1103115R
conv_337 .

Ristić, Ratko, Radić, Boris, Vasiljević, Nevena, Nikić, Zoran, "Promene načina korišćenja zemljišta i odbrana od poplava - primer sliva reke Jelašnice" in Glasnik Šumarskog fakulteta, no. 103 (2011):115-130,
https://doi.org/10.2298/GSF1103115R .,
conv_337 .

TY  - JOUR
AU  - Nikić, Zoran
AU  - Letić, Ljubomir
AU  - Nikolić, Vesna
AU  - Filipović, Vladimir
PY  - 2010
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/330
AB  - U radu je prikazan postupak proračuna uticaja režima nivoa podzemnih voda na stanišne uslove hrasta lužnjaka u Ravnom Sremu. Režim vlaženja u velikoj meri opredeljuje način gazdovanja ovim šumama. Hidrogeološki uslovi predstavljaju značajan faktor distribucije vlage u zemljištu tokom vegetacionog perioda. U aluvijalnim naslagama Save u Ravnom Sremu formiran je zbijeni tip izdani, uglavnom subarteskog karaktera, koji je u hidrauličkoj vezi sa rečnim vodama. Proračun režima nivoa podzemnih voda prilagođen je uslovima dvoslojevite porozne sredine u aluvijumu reke Save, sa ciljem definisanja oscilacija pijezometarskog pritiska u donjem vodonosnom sloju i nivoa podzemnih voda u povlatnom, slabije propusnom sloju.
AB  - The calculation of the influence of the underground water level on the habitat conditions of pedunculate oak in the lowland Ravni Srem is presented. The management method in these forests is greatly determined by moisture regime. Hydrogeological conditions are significant factors of moisture distribution in the soil during the vegetation period. In the river Sava alluvial deposits in Ravni Srem, the serried type of aquifer was formed, mostly of subartesian character, connected with river waters by hydraulic connection. The calculation of underground water regime was adapted to the conditions of two-layer porous environment in the river Sava alluvium, in order to define the oscillations of piezometric pressure in the lower aquifer and the level of underground waters in the upper, less porous layer.
PB  - Univerzitet u Beogradu - Šumarski fakultet, Beograd
T2  - Glasnik Šumarskog fakulteta
T1  - Postupak proračuna režima nivoa podzemnih voda na staništu hrasta lužnjaka u ravnom Sremu
T1  - Procedure for underground water calculation regime of Pedunculata oak habitat in plain Srem
EP  - 138
IS  - 101
SP  - 125
DO  - 10.2298/GSF1001125N
UR  - conv_320
ER  - 

@article{
author = "Nikić, Zoran and Letić, Ljubomir and Nikolić, Vesna and Filipović, Vladimir",
year = "2010",
abstract = "U radu je prikazan postupak proračuna uticaja režima nivoa podzemnih voda na stanišne uslove hrasta lužnjaka u Ravnom Sremu. Režim vlaženja u velikoj meri opredeljuje način gazdovanja ovim šumama. Hidrogeološki uslovi predstavljaju značajan faktor distribucije vlage u zemljištu tokom vegetacionog perioda. U aluvijalnim naslagama Save u Ravnom Sremu formiran je zbijeni tip izdani, uglavnom subarteskog karaktera, koji je u hidrauličkoj vezi sa rečnim vodama. Proračun režima nivoa podzemnih voda prilagođen je uslovima dvoslojevite porozne sredine u aluvijumu reke Save, sa ciljem definisanja oscilacija pijezometarskog pritiska u donjem vodonosnom sloju i nivoa podzemnih voda u povlatnom, slabije propusnom sloju., The calculation of the influence of the underground water level on the habitat conditions of pedunculate oak in the lowland Ravni Srem is presented. The management method in these forests is greatly determined by moisture regime. Hydrogeological conditions are significant factors of moisture distribution in the soil during the vegetation period. In the river Sava alluvial deposits in Ravni Srem, the serried type of aquifer was formed, mostly of subartesian character, connected with river waters by hydraulic connection. The calculation of underground water regime was adapted to the conditions of two-layer porous environment in the river Sava alluvium, in order to define the oscillations of piezometric pressure in the lower aquifer and the level of underground waters in the upper, less porous layer.",
publisher = "Univerzitet u Beogradu - Šumarski fakultet, Beograd",
journal = "Glasnik Šumarskog fakulteta",
title = "Postupak proračuna režima nivoa podzemnih voda na staništu hrasta lužnjaka u ravnom Sremu, Procedure for underground water calculation regime of Pedunculata oak habitat in plain Srem",
pages = "138-125",
number = "101",
doi = "10.2298/GSF1001125N",
url = "conv_320"
}

Nikić, Z., Letić, L., Nikolić, V.,& Filipović, V.. (2010). Postupak proračuna režima nivoa podzemnih voda na staništu hrasta lužnjaka u ravnom Sremu. in Glasnik Šumarskog fakulteta
Univerzitet u Beogradu - Šumarski fakultet, Beograd.(101), 125-138.
https://doi.org/10.2298/GSF1001125N
conv_320

Nikić Z, Letić L, Nikolić V, Filipović V. Postupak proračuna režima nivoa podzemnih voda na staništu hrasta lužnjaka u ravnom Sremu. in Glasnik Šumarskog fakulteta. 2010;(101):125-138.
doi:10.2298/GSF1001125N
conv_320 .

Nikić, Zoran, Letić, Ljubomir, Nikolić, Vesna, Filipović, Vladimir, "Postupak proračuna režima nivoa podzemnih voda na staništu hrasta lužnjaka u ravnom Sremu" in Glasnik Šumarskog fakulteta, no. 101 (2010):125-138,
https://doi.org/10.2298/GSF1001125N .,
conv_320 .

TY  - JOUR
AU  - Ocokoljić, Mirjana
AU  - Medarević, Milan
AU  - Nikić, Zoran
AU  - Galečić, Nevenka
AU  - Stojičić, D.
PY  - 2010
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/311
AB  - Based on the comparative morphophysiological analysis of the seedlings Koelreuteria paniculata Laxm. produced in a generative manner by using one line of the oldest half-sib tree and two lines of younger half-sib trees, data regarding the seedlings' features and the variability of the plant breeding are presented. Recorded parameters are the indexes which point to the influence of age over biological reproduction. This paper also puts forward that the variability of the seedlings exerts an influence on the selection of mother trees, and provides the technology of production of breeding plants with desired features and its practical usage in landscape architecture, horticulture and forestry. Namely, by selecting the superior genotypes and with their breeding, different sorts of koelreuteria (Chinatree) could be synthesized and thanks to the high level of general adaptability would provide reciprocally high productivity of studied parameters and be the base material for plants for specific purposes.
PB  - Srpsko biološko društvo, Beograd, i dr.
T2  - Archives of Biological Sciences
T1  - Variability of features in half-sib posterity as a basis in plant breeding of the species Koelreuteria paniculata Laxm
EP  - 703
IS  - 3
SP  - 693
VL  - 62
DO  - 10.2298/ABS1003693O
UR  - conv_2261
ER  - 

@article{
author = "Ocokoljić, Mirjana and Medarević, Milan and Nikić, Zoran and Galečić, Nevenka and Stojičić, D.",
year = "2010",
abstract = "Based on the comparative morphophysiological analysis of the seedlings Koelreuteria paniculata Laxm. produced in a generative manner by using one line of the oldest half-sib tree and two lines of younger half-sib trees, data regarding the seedlings' features and the variability of the plant breeding are presented. Recorded parameters are the indexes which point to the influence of age over biological reproduction. This paper also puts forward that the variability of the seedlings exerts an influence on the selection of mother trees, and provides the technology of production of breeding plants with desired features and its practical usage in landscape architecture, horticulture and forestry. Namely, by selecting the superior genotypes and with their breeding, different sorts of koelreuteria (Chinatree) could be synthesized and thanks to the high level of general adaptability would provide reciprocally high productivity of studied parameters and be the base material for plants for specific purposes.",
publisher = "Srpsko biološko društvo, Beograd, i dr.",
journal = "Archives of Biological Sciences",
title = "Variability of features in half-sib posterity as a basis in plant breeding of the species Koelreuteria paniculata Laxm",
pages = "703-693",
number = "3",
volume = "62",
doi = "10.2298/ABS1003693O",
url = "conv_2261"
}

Ocokoljić, M., Medarević, M., Nikić, Z., Galečić, N.,& Stojičić, D.. (2010). Variability of features in half-sib posterity as a basis in plant breeding of the species Koelreuteria paniculata Laxm. in Archives of Biological Sciences
Srpsko biološko društvo, Beograd, i dr.., 62(3), 693-703.
https://doi.org/10.2298/ABS1003693O
conv_2261

Ocokoljić M, Medarević M, Nikić Z, Galečić N, Stojičić D. Variability of features in half-sib posterity as a basis in plant breeding of the species Koelreuteria paniculata Laxm. in Archives of Biological Sciences. 2010;62(3):693-703.
doi:10.2298/ABS1003693O
conv_2261 .

Ocokoljić, Mirjana, Medarević, Milan, Nikić, Zoran, Galečić, Nevenka, Stojičić, D., "Variability of features in half-sib posterity as a basis in plant breeding of the species Koelreuteria paniculata Laxm" in Archives of Biological Sciences, 62, no. 3 (2010):693-703,
https://doi.org/10.2298/ABS1003693O .,
conv_2261 .

TY  - JOUR
AU  - Ocokoljić, Mirjana
AU  - Medarević, Milan
AU  - Nikić, Zoran
AU  - Galečić, Nevenka
AU  - Stojičić, Đurđa
PY  - 2010
UR  - https://omorika.sfb.bg.ac.rs/handle/123456789/317
AB  - Based on the comparative morphophysiological analysis of the seedlings Koelreuteria paniculata Laxm. produced in a generative manner by using one line of the oldest half-sib tree and two lines of younger half-sib trees, data regarding the seedlings features and the variability of the plant breeding are presented. Recorded parameters are the indexes which point to the influence of age over biological reproduction. This paper also puts forward that the variability of the seedlings exerts an influence on the selection of mother trees, and provides the technology of production of breeding plants with desired features and its practical usage in landscape architecture, horticulture and forestry. Namely, by selecting the superior genotypes and with their breeding, different sorts of koelreuteria (China-tree) could be synthesized and thanks to the high level of general adaptability would provide reciprocally high productivity of studied parameters and be the base material for plants for specific purposes.
PB  - Srpsko biološko društvo, Beograd, i dr.
T2  - Archives of Biological Sciences
T1  - Variability of features in half-sib posterity as a basis in plant breeding of the species koelreuteria paniculata laxm.
EP  - 705
IS  - 3
SP  - 695
VL  - 62
DO  - 10.2298/ABS1003693O
UR  - conv_942
ER  - 

@article{
author = "Ocokoljić, Mirjana and Medarević, Milan and Nikić, Zoran and Galečić, Nevenka and Stojičić, Đurđa",
year = "2010",
abstract = "Based on the comparative morphophysiological analysis of the seedlings Koelreuteria paniculata Laxm. produced in a generative manner by using one line of the oldest half-sib tree and two lines of younger half-sib trees, data regarding the seedlings features and the variability of the plant breeding are presented. Recorded parameters are the indexes which point to the influence of age over biological reproduction. This paper also puts forward that the variability of the seedlings exerts an influence on the selection of mother trees, and provides the technology of production of breeding plants with desired features and its practical usage in landscape architecture, horticulture and forestry. Namely, by selecting the superior genotypes and with their breeding, different sorts of koelreuteria (China-tree) could be synthesized and thanks to the high level of general adaptability would provide reciprocally high productivity of studied parameters and be the base material for plants for specific purposes.",
publisher = "Srpsko biološko društvo, Beograd, i dr.",
journal = "Archives of Biological Sciences",
title = "Variability of features in half-sib posterity as a basis in plant breeding of the species koelreuteria paniculata laxm.",
pages = "705-695",
number = "3",
volume = "62",
doi = "10.2298/ABS1003693O",
url = "conv_942"
}

Ocokoljić, M., Medarević, M., Nikić, Z., Galečić, N.,& Stojičić, Đ.. (2010). Variability of features in half-sib posterity as a basis in plant breeding of the species koelreuteria paniculata laxm.. in Archives of Biological Sciences
Srpsko biološko društvo, Beograd, i dr.., 62(3), 695-705.
https://doi.org/10.2298/ABS1003693O
conv_942

Ocokoljić M, Medarević M, Nikić Z, Galečić N, Stojičić Đ. Variability of features in half-sib posterity as a basis in plant breeding of the species koelreuteria paniculata laxm.. in Archives of Biological Sciences. 2010;62(3):695-705.
doi:10.2298/ABS1003693O
conv_942 .

Ocokoljić, Mirjana, Medarević, Milan, Nikić, Zoran, Galečić, Nevenka, Stojičić, Đurđa, "Variability of features in half-sib posterity as a basis in plant breeding of the species koelreuteria paniculata laxm." in Archives of Biological Sciences, 62, no. 3 (2010):695-705,
https://doi.org/10.2298/ABS1003693O .,
conv_942 .