Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
43
5
2007
Species Composition of Periphyton Algae of the Reservoirs of the Dnieper Cascade
3-42
10.1615/HydrobJ.v43.i5.10
T. F.
Shevchenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
Long-term original data on periphyton algae occurring on artificial solid inorganic substrata in the Dnieper reservoirs were analyzed and generalized for the first time. The taxonomic list of their species was presented. A total of 431 species of algae represented by 478 infraspecific taxa was found during the whole period of investigations (1988−1995, 1999, 2004, and 2005). The largest number of species of periphyton algae (320) was found in the Kiev head-cascade reservoir. On the whole, 51 algae species (63 infraspecific taxa) were registered in the Dnieper reservoirs for the first time. In this case, 3 algae species and 1 their form were new for the algae flora of Ukraine.
Effect of Acidulation of Higher Aquatic Plants Exemplified by Lemna minor L.
43-54
10.1615/HydrobJ.v43.i5.20
I. V.
Grib
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
I. A.
Chemeris
Cherkassy State Technological University, Cherkassy, Ukraine
The possibility of using Lemna minor L. as a test organism at acidulation of natural waters was analyzed. There were studied the character of responses of its photosynthetic apparatus (concentrations of chlorophylls, carotenoids and photochemical activity of chloroplasts) and morphological abnormalities to the changes in environmental conditions simulating the shifts in hydrogen index of surface waters under conditions of technological environmental impact.
Quantitative Distribution and Taxonomic Structure of the Community of Heterotrophic Flagellates in the Main Biotopes of a Small Plain River
55-63
10.1615/HydrobJ.v43.i5.30
N. G.
Kosolapova
Institute of Biology of Inland Waters, Russian Academy of Sciences, Borok, Russian Federation
The qualitative and quantitative characteristics of plankton heterotrophic flagellates occurring in various biotopes of a small plain river were investigated on the example of the Latka river representing a tributary of the Rybinsk reservoir (the upper reaches of the Volga river, Russia). A total of 91 species of heterotrophic flagellates of 10 orders and of the group of uncertain taxonomic affiliation was found during the period of investigations. The orders Chrysomonadida, Cercomonadida, and Choanoflagellida were represented by the largest number of species. In the beaver ponds, heterotrophic flagellates occurred in abundance, whereas in the sections with a high speed of water flow they were less abundant.
Chlorophyll a Content in Phytoplankton of Water Bodies of Urban Territories
64-78
10.1615/HydrobJ.v43.i5.40
V. I.
Shcherbak
Institute of Hydrobiology, National Academy of Sciences of Ukraine, 12 Prosp. Geroev Stalingrada, Kyiv 04210, Ukraine
L. A.
Sirenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, 12, Pr. Geroyev Stalingrada, 04210 Kiev, Ukraine
Natalya Ye.
Semenyuk
Institute of Hydrobiology, National Academy of Sciences of Ukraine,
12 Geroyiv Stalingrada Av., Kiev 04210, Ukraine
Relationship between the content of chlorophyll a and the taxonomic composition and biomass of phytoplankton of water bodies of the town of Kiev was investigated. The maximum and minimum content of chlorophyll a coincided with the maximum and minimum biomass of phytoplankton. Most of the studied water bodies in terms of the average per year content of chlorophyll a were eutrophic.
The Change in the Length of Colonies of the Planktonic Diatom Aulacoseira baicalensis in Various Stages of the Annual Cycle in Lake Baikal
79-86
10.1615/HydrobJ.v43.i5.50
Ye. D.
Bedoshvili
Limnological Institute of the Siberian Branch of RAS, Irkutsk, Russia
N. A.
Bondarenko
Limnological Institute of Siberian Branch of Russian Academy of Sciences,
P.O. Box 4199, Irkutsk 664033, Russia
M. V.
Sakirko
Limnological Institute of the Siberian Branch of RAS, Irkutsk, Russia
E. V.
Likhoshvay
Lymnological Institute, Siberian Branch of RAS, 3, Ulan-Batorskaya St., 664033 Irkutsk, Russia
Morphology of the diatom alga Aulacoseira baicalensis (K. Meyer) Simonsen dominating in Lake Baikal was studied in its natural populations during a year using light and scanning electron microscopy. At the beginning of the under-ice development of the alga, there were only linking spines in its filaments, and a gradual increase in its colony lengths was registered. The separation spines started to develop when algal cell concentrations in its mucilaginous aggregations reached maximal values. The formation of conical separation spines in colonies, subsequent division of colonies into shorter fragments and then their dispersal in plankton were observed after the ice-melting. An increase in the algal population density, a rise of water temperature and the lowering of phosphate and silicon concentration could play a role of a “signal” to start forming separation valves.
Assessment of the Current Trophic State of Lake Onega by Primary Production of Phytoplankton
87-90
10.1615/HydrobJ.v43.i5.60
Ye. V.
Tekanova
Northern Water Problem Institute, Karelian Research Centre of the RAS, Petrozavodsk, Russia
T. M.
Timakova
Northern Water Problems Institute, Karelian Research Centre of the Russian Academy of Sciences Petrozavodsk, Russia
The level and dynamics of phytoplankton primary production in limnetic heterogenic ecosystem of Lake Onega are shown. The causes of increasing primary production in some areas of the lake are discussed. The trends toward spreading of eutrophication over the water body area are established. There is considered the current trophic status of the lake.
Structural Parameters of Bacterial Plankton in Ponds with High Contents of Mineral Nitrogen
91-100
10.1615/HydrobJ.v43.i5.70
Ye. V.
Starosyla
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
G. N.
Oleynik
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
The content of mineral nitrogen in the investigated ponds corresponded to that in hypertrophic bodies of water. An interrelation between the numbers, biomass and sizes of bacterial plankton cells and concentration of ammonia nitrogen has been shown.
Growth of the Microalga Phaeodactylum tricornutum under the Influence of Copper and Capability of Culture of Restoring in Pure Environment
101-107
10.1615/HydrobJ.v43.i5.80
Zh. V.
Markina
A.V. Zhirmunsky Institute of Marine Biology, FEB RAS, 17, Palchevskogo St., Vladivostok 690059, Russia
N. A.
Ayzdaycher
Institute of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 17, Palchevskogo St., 690041 Vladivostok
The cell number and chlorophyll a content in the microalga Phaeodactylum tricornutum were decreased in the nutrient medium with concentration of 0.13 mg·L−1 copper as compared to the control. The dynamics of content of carotenoids was irregular and, at the same time, size and shape of cells changed. After the transfer of microalga to a copper-free medium, cell numbers, chlorophyll a and carotenoids content were considerably higher than these were in the control; size and shape of cells restored to their control values after two experimental days.
Evaluation of 137Cs Intake with Water Masses into the Organism of Freshwater Fishes
108-111
10.1615/HydrobJ.v43.i5.90
V. V.
Beliayev
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev
Ye. N.
Volkova
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev
The intake of 137Cs into organism of freshwater fish was explored by the methods of mathematical modeling. It has been stated that relative contribution of water route of contamination of fish does not exceed 10%.