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Résultats 11-20 de 3,363
Effect of pluviographic parameters and runoff on suspended sediment concentration in small streams
1998
Stefanovic, J. | Bulajic, Z. (Institut za zemljiste, Beograd (Yugoslavia))
Hydrological, psamological and pluviographical measurements in experimental watershed area in the watershed of River Topciderska (Serbia, Yugoslavia) was analyzed. Interrelations between suspended sediment concentration in streams on the one hand and runoff, rainfall, rainfall intensity and index of previous rainfall on the other hand was came from this analyze. Effects of these parameters on suspended sediment concentration was considered for a single rainfall epizode, during the period of torrential waves and as annual value. Specific coefficients (coefficient of annual rainfall structure and coefficient of annual runoff structure) were used in this paper, with help of them effects of torrential waves and intensity rainfall on average annual suspended sediment concentration were considered.
Afficher plus [+] Moins [-]The establishing of ichthyological status of the Nisava river (Serbia, Yugoslavia) with special review of fishes' hematology
1998
Brankovic, S. (Fakultet zastite na radu, Nis (Yugoslavia)) | Ciric, B. | Stankovic, M.
Biosystematic research of fish population from the river Nisava (Serbia, Yugoslavia) is placed from the mouth of Jerma river and Nisava river to the mouth of Nisava river and Juzna Morava river (Serbia, Yugoslavia). The next part of the research is about determining the methodology for counting of particular fish species in the river Nisava. Hematological analyses of some species were done at the same time in order to establish the relation between water quality and number of erythrocytes, leucocytes and quantity of haemoglobin. Two autochthonous and allochthonous species were analyzed. The method used in this research are explained as well.
Afficher plus [+] Moins [-]Identification of relevant low flow in hydrologically unexamined rivers
1998
Petkovic, T. (Savezni hidrometeoroloski zavod, Beograd (Yugoslavia))
The paper presents some procedures for identification of low flow required for taking preventive measures in the rivers with no comprehensive hydrological observations. Besides using time - space parameters, temparery or simultaneous hydrometric observations in the observed rivers are also recommended. The paper concludes with the presentation of relevant low flow calculation results for one river in Zlatibor region (Serbia, Yugoslavia), which has not been examined so far.
Afficher plus [+] Moins [-]Transboundary issue of Bega canal [Serbia, Yugoslavia] pollution
1998
Cukic, Z. (Univerzitet u Novom Sadu, Novi Sad (Yugoslavia). Prirodno-matematicki fakultet, Institut za hemiju) | Kilibarda, P. | Kojcic, K. | Jovanovic, D.
Using the then years data series of organic load (COD, BOD), ammonia and organic nitrogen, total phosphorus, detergents and oxygen dissolved, a heavy pollution of Bega Canal at the Romanian - Yugoslav Border ("Srpski Itebej" Control Station) is illustrated. High load of organic matters and nutrients as well as extremely low oxygen dissolved content created anaerobic conditions in aquatic environment, are the main characteristics of Bega Canal state at the analyzed location. As the Bega Canal (left tributary of Tisza river) is an international river, a transboundary issue of pollution is considered in this paper.
Afficher plus [+] Moins [-][Protective utilization of water and land in the Bistrica river basin [Montenegro, Yugoslavia]]
1998
Popovic, V. (Institut za zemljiste, Beograd (Yugoslavia)) | Ivanovic, S. | Ivanovic, S. | Petrovic, P.
In this paper, we are consider processing of soils erosion and his way on protection expoitation of water for population water supply, melioration's systems for irrigation and for strew of manger of the Lim river with the tug and suspend bank (Montenegro, Yugoslavia). We are given suggestions for protective utilization of agricultural and forest lands and the possibilities of water exploitation from Bistrica river (Montenegro, Yugoslavia). That is useful for fishing, irrigation, energetic, tourism and water supply. In this paper, you can meet some suggestions about exploitations of minerals and organic fertilizars that are not toxics and they not any influence on pollution of land and water.
Afficher plus [+] Moins [-]Bottom fauna of Susica fountainhead [Serbia, Yugoslavia]
1998
Markovic, Z. | Mitrovic-Tutundzic, V. (Univerzitet u Beogradu, Beograd - Zemun (Yugoslavia). Poljoprivredni fakultet, Institut za stocarstvo)
During the 1994-1995, seasonal investigations of the fountainhead and spring region of the river Susica, near Uzice in West Serbia (Yugoslavia) were carried out. The bottom fauna composition, termic properties of air and water as well as chemical parameters were also determined. By the study of bottom composition 26 taxa were determined. The most uniform fauna was found in the Susica fountainhead while its diversity was increasing farther downstream the spring region.
Afficher plus [+] Moins [-]Macrozoobenthos as a water quality parameter in the river Jablanica [Serbia, Yugoslavia]
1998
Markovic, Z. (Univerzitet u Beogradu, Beograd - Zemun (Yugoslavia). Poljoprivredni fakultet, Institut za stocarstvo) | Miljanovic, B. | Mitrovic-Tutundzic, V.
During the period from 11th May, 1991 to 5th March, 1994, seasonal study of the river Jablanica (Serbia, Yugoslavia) macrozoobenthos was carried out. Investigations were done of three sectors: in the upper, middle and down reach of the river, with the aim to estimate water quality changes by the changes in bottom fauna composition. Bottom fauna community was composed of 17 invertebrate groups with 100 taxa determined. The most diverse Oligochaeta (21 taxa) and Ephemeroptera (19 taxa). Macroinvertebrates diversity decreased downstream the river as a result of the pollutional degree increase. Saprobic indices were from 1.51 (sector 2) to 1.8 (sector 3).
Afficher plus [+] Moins [-]Possibility of using bottom fauna community as an indicator of the condition of the river ecosystems
1998
Simic, V. (Prirodno-matematicki fakultet, Kragujevac (Yugoslavia). Institut za biologiju)
In Yugoslavia, application of macrozoobenthos for the purpose of bioindication has been relatively limited. This communities has been used in conjugation with saprobiological methods, while biotic indexes have been unjustifiable used to a small extent. This paper shows the most significant biotic indexes used in the World and possibility of their application in Yugoslavia, as well as the necessity for their modification and elaboration of new ones specific to Yugoslav conditions.
Afficher plus [+] Moins [-][Present state of the Moraca river [Montenegro, Yugoslavia] water quality
2001
Vukcevic, S.V. (Institut za tehnicka istrazivanja, Podgorica (Yugoslavia))
Paper points the present water quality of the Moraca river (Montenegro, Yugoslavia), from rivermouth of Zeta to Skadarsko jezero lake. Hydrological analysis, level of water pollution are also presented, together with proposed water quality protection measures regarding the Yugoslav federal regulations for surface waters.
Afficher plus [+] Moins [-]The oxygen balance of the Crnojevica river water [Montenegro, Yugoslavia]
2001
Djuraskovic, P. | Tomic, N. (Republicki hidrometeoroloski zavod, Podgorica (Yugoslavia))
The balance of production and respiration processes in water of Crnojevica river (Montenegro, Yugoslavia) has been estimate, over the estimate correlation between significant parameters of water quality (BOD, % saturation of O2, pH). Correlation between these parameters is established. The balances exist in stationary conditions. But, impact of precipitation is disturbing this state. The hydrodynamic conditions at underground flow and wastewater effluent from the town Cetinje area, has been influence for it, too. The data are referring to small and middle water state.
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