Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
41
6
2005
Response of Phytoplankton of Eutrophic Reservoirs to the Increase in the Content of Phosphorus and Nitrogen in Their Waters
3-22
10.1615/HydrobJ.v41.i6.10
A. V.
Kureyshevich
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
The influence of the increase in the content of phosphorus and nitrogen in the water of the Dnieper reservoirs on the quantitative indices of development of phytoplankton with a predominance of Cyanophyta and Bacillariophyta, and also on the processes of its production and decomposition, was studied in summertime. It has been found that the increase in the content of inorganic phosphorus dissolved in water up to more than 0.2 mg P/L resulted for the most part in phytoplankton growth inhibition and in the decrease in the intensity of its photosynthesis. Its influence increased with increasing pH value. The increase in the content of nitrate stimulated the development of phytoplankton. The response of algae to the introduction of ammonium depended on its concentration.
Composition and Structure of Zoobenthos of the Styr River in the Vicinity of the Rovno NPS and the Assessment of its Influence on Benthic Communities
23-44
10.1615/HydrobJ.v41.i6.20
A. A.
Sylaieva
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kyiv, 04210, Ukraine
Zoobenthos of the Styr river in the vicinity of the Rovno NPS (the 30-km zone) was studied in summer and autumn 2000. Several indices were used in assessing the quality of the environment in terms of zoobenthic organisms. On the whole, in the main riverbed of the Styr river the quality of the environment may be assessed as “clean - slightly contaminated”. The discharge of heated waters of the Rovno NPS had little effect on the development of zoobenthos.
Processes of Production and Decomposition in Microphytobenthos (on the example of the sections of he tail water of the Kiev Hydro-Electric Power Station)
45-55
10.1615/HydrobJ.v41.i6.30
L. P.
Yarmoshenko
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
Results of the study of the processes of production and decomposition in microphytobenthos in the sections of the tail water of the Kiev Hydro-Electric Power Station carried out in 2001−2003 are presented. It has been found that the total production of microphytobenthos varied over a wide range. This fact suggests that its indices of production and decomposition depend on many factors. It has been found, that intra-daily fluctuations in water level determined by the operating conditions of the Kiev Hydro-Electric Power Station essentially influence the processes of production and decomposition in microphytobenthos. The peculiarities of its functioning under the influence of this factor in the Kiev section of the Kanev reservoir were investigated.
Bottom Invertebrates as Alien Newcomers in Water Bodies of the Lower Reaches of the Danube
56-65
10.1615/HydrobJ.v41.i6.40
O. O.
Sinitsyna
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
Ye. V.
Voloshkevich
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
The occurrence and distribution of bivalves Sinanodonta woodiana (Lea, 1834) and Corbicula fluminea (O. F. Müller 1774), and also the white-fingered mud crab (Dutch crab, Harris mud crab) Rhithropanopeus harrisi tridentata Maitland and the Chinese mitten crab Eriocheir sinensis H. Milne Edwards (Crustacea=Decapoda) being new species for the fauna of Ukraine in the Ukrainian part of the Danube delta are discussed.
Microbiological Characteristics of Water Bodies Subjected to Intensive Anthropic Load
66-77
10.1615/HydrobJ.v41.i6.50
G. N.
Oleynik
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
Ye. V.
Starosyla
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
Microbiological monitoring of the cascade of ponds located in the Aleksandriya dendropark (the town of Belaya Tserkov), in which the concentration of mineral nitrogen is one order of magnitude higher than that registered in hypertrophic water bodies, was carried out for the first time. Seasonal and spatial dynamics of the numbers of bacterioplankton and bacteriobenthos, and also their morphological characteristics, are discussed.
Microbiological Processes in Bottom Sediments of the Rybinsk Reservoir and Lake Pleshcheyevo as Factor Forming the Quality of Aquatic Environment
78-84
10.1615/HydrobJ.v41.i6.60
D. B.
Kosolapov
Institute of Biology of Inland Waters Russian Academy of Sciences Borok, Yaroslavl Region, Russia
I. A.
Kuznetsov
Institute of Biology of Inland Waters of the Russian Academy of Sciences, Borok, Russia
A. N.
Dzyuban
Institute of Biology of Inland Waters, Russian Academy of Sciences, Borok, Russia
Anthropogenic pollution of water bodies causes destruction of aerobic bacterial assemblages in soils and formation of anaerobic ones. As a result, the bottom sediments become sources of secondary pollution.
Visually Definite Responses of Freshwater Organisms as Express Indicators of Water Medium Toxicity
85-98
10.1615/HydrobJ.v41.i6.70
L. P.
Braginskiy
Institute of Hydrobiology National Academy of Sciences of Ukraine, Kiev, Ukraine
A. A.
Ignatyuk
Institute of Hydrobiology National Academy of Sciences of Ukraine; State Technical University of Ukraine "Kiev Polytechnic Institute" Kiev, Ukraine
The simplest bioassays based on visual observation of behavioral responses and changes in body color of fish and aquatic invertebrates in a toxic medium are fast, sensitive, easily reproducible, and cheap. Such assays require no complicated instrumentation and reagents and may be useful and useable in monitoring of wastewaters, at toxicological examination in fish industry, as well as in many other cases when accessible, rapid and cheap methods of revealing water medium toxicity are needed. Systematized information is presented on most informative signs of intoxications in aquatic organisms and their responses to toxic action, which could be revealed by visual observations.
Influence of Polyphenols of Higher Aquatic Plants on the Functional Activity of Plankton Algae
99-110
10.1615/HydrobJ.v41.i6.80
V. A.
Medved'
Institute of Hydrobiology National Academy of Sciences of Ukraine Kyiv, Ukraine
Z. N.
Gorbunova
Institute of Hydrobiology National Academy of Sciences of Ukraine Kiev, Ukraine
The influence of metabolites of phenol origin of higher aquatic plants on the composition and quantitative indices of development of phytoplankton was investigated. It has been found that polyphenols influence the intensity of photosynthesis, nitrate reductase activity, and growth characteristics of unialgal cultures of green and blue-green algae. The amount and composition of metabolites of phenol origin, the species composition of higher aquatic plants, and ph of water should be taken into account in evaluating algicidal activity of metabolites.
Experience of Application of Ecological Classification and Substantiation of Environmental Standards of Surface Water Quality of Ukraine According to Specific Parameters of Radiation Influence
111-120
10.1615/HydrobJ.v41.i6.90
It is considered the methodology of the development of criteria for the assessment of radioactive contamination degree of inland waters. Based on these criteria, the radioecological standardization of surface waters and estuaries of Ukraine was proposed.
Some Issues of Ecophysiology of Free-living Ciliates
121-135
10.1615/HydrobJ.v41.i6.100
A. A.
Koval'chuk
Uzhgorod National University Uzhgorod, Ukraine
Production experiments in situ and in vitro, as well as experiments on feeding and data on oxygen consumption by the free-living ciliates made it possible to study their energy budget depending on the temperature of a medium. On this basis the following coefficients were calculated: assimilation coefficient (U = 0.58), efficiency of using the consumed food for growth (K1 = 0.26), and efficiency of using the assimilated food for growth (K2 = 0.43). The temperature corrections are given to determine the natural level of ciliate metabolism under different temperature conditions.