خيارات البحث
النتائج 1 - 5 من 5
[The recent flora of vascular macrophyta in the "Vrbas-Bezdan" and "Banatska Palanka-Novi Becej" canals [Serbia, Yugoslavia] as indicator of ecological characteristics and water quality]
1997
Stojanovic, S. (Poljoprivredni fakultet, Novi Sad (Yugoslavia)) | Vuckovic, M. | Zderic, M. | Stankovic, Z. | Kilibarda, P. | Lazic, D.
[Estimation of water quality of the Bajski canal [Serbia, Yugoslavia] using chemical and biological parameters]
1997
Pujin, V. | Ivanc, A. | Kojcic, K. | Miljanovic, B. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za biologiju)
In the period of 1993-1996 water quality of the Bajski canal (Serbia, Yugoslavia) was followed using certain chemical and biological parameters. Oxygen control ranged from its deficiency to its supersaturation recorded in spring and early summer which moved down in summer and early autumn. A smaller amount of suspended particles points to a sedimentation process provoked also in the canal bed, clearing the way for the development of macrophytes. A diverse zooplankton showed typical seasonal variations. A total of 73 species was recorded including 13 Protozoa (17.8%), 44 Rotatoria (60.3%), 10 Cladocera (13.7%), and 6 Copepoda (8.2%). In summary, the process of water quality deterioration is less evident in this section of the DTD (Danube-Tisza-Danube) hydrosystem (Serbia, Yugoslavia).
اظهر المزيد [+] اقل [-][Oligochaeta community as indicator of water quality in the Bajski canal [Serbia, Yugoslavia]]
1997
Djukic, N. | Miljanovic, B. | Maletin, S. | Ivanc, A. (Prirodno-matematicki fakultet, Novi Sad (Yugoslavia). Institut za biologiju)
During the period 1977-1996, Oligochaeta have been studied as indicator of water quality in the Bajski canal, Serbia (Yugoslavia). The locality was characterized by the 13 species from nine genera and two families - Naididae and Tubificidae. Species in genera Limnodrilus, Potamothrix and Branchiura were dominant, defining the environment as natural eutrophic.
اظهر المزيد [+] اقل [-]Evaluation of water quality in Hydrosystem Danube-Tisza-Danube [Serbia, Yugoslavia] according to composition and structure of fish communities
1997
Maletin, S. | Djukic, N. | Miljanovic, B. | Ivanc, A. | Pujin, V. (Univerzitet u Novom Sadu, Novi Sad (Yugoslavia). Prirodno-matematicki fakultet, Institut za biologiju)
A complex ichthyological analysis of the individual sections of the DTD (Danube-Tisza-Danube)-Backa canal system (Serbia, Yugoslavia) performed during 1996 vegetation period 23 fish species from 7 families. On the basis of the occurrence and abundance of indicators and limnosaprobic parameter, water quality of the analyzed canal sections was found to be beta-mesosaprobic index ranging from 2.15 to 2.21. The obtained results show that water quality of this DTD (Danube-Tisza-Danube) canal sections (Bajski Kanal, Odzaci-Sombor, Vrbas-Bezdan and Novi Sad-Savino Selo canals) corresponds to its purpose. The fish community representing an important factor of a whole aquatic biocenose, in addition to its undoubtedly indicator values also representing an active factor in the process of selfpurification and quality preservation of whole hydrosystem.
اظهر المزيد [+] اقل [-][Physical and chemical characteristics of the Danube river and a part of the Danube-Tisza-Danube channel [Serbia, Yugoslavia] during the period 1991-1996]
1997
Bugarski, R. | Berkovic, M. (Republicki hidrometeoroloski zavod Republike Srbije, Beograd (Yugoslavia))
Drainage of industrial and communal effluents, directly into the water flow, as many hydrotechnical activities, significantly influence the schedule and balance of the processes that take place into water. In this paper, there are represented the results of systematic control of the water quality of the Danube river and DTD (Danube-Tisza-Danube) channel on the parts Vrbas-Bezdan and Becej-Bogojevo, at the control station network of the Republic Weather Bureau (the Republic of Serbia), for the period of 1991-1996. The results show that the most adverse influence of anthropogenic factor is on the part of the flow of the DTD (Danube-Tisza-Danube) channel from Vrbas to the flow into Tisza river.
اظهر المزيد [+] اقل [-]