Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
44
2
2008
Some Biogeographic Aspects of Hydrobiology
3-15
10.1615/HydrobJ.v44.i2.10
A. A.
Protasov
Institute of Biodiversity and Ecosystem Studies of Bulgarian Academy of Sciences, Sofia, Bulgaria; Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kyiv, 04210, Ukraine
The issues of interrelation between hydrosphere biogeography and hydrobiology are considered. The peculiarities of usage of hydrobiological data in biogeography are discussed, in particular, in connection with the insular nature of inland water bodies and the discontinuity of species areas. The conceptual models of forming biotic boundaries between biotas and biotic groups are offered. Some topics of hydrobiology, solution of which may promote mutual enrichment of hydrosphere biogeography and hydrobiology, are considered.
Assessment of Water Quality in the Yarqon River (the Central Israel) in terms of the Methods of Bioindication and Bioassay
16-28
10.1615/HydrobJ.v44.i2.20
M.
Tavasi
Institute of Evolution, Haifa University, Mount Carmel, 31905 Haifa, Israel
S. S.
Barinova
Institute of Evolution, Haifa University, Mount Carmel, 31905 Haifa, Israel
Ye.
Nevo
Institute of Evolution, Haifa University, Mount Carmel, 31905 Haifa, Israel
Solomon P.
Wasser
International Centre for Biotechnology and Biodiversity of Fungi,
Institute of Evolution and Faculty of Natural Sciences,
University of Haifa, Mt. Carmel, Haifa 31905, Israel
Water quality in the Yarqon river was assessed in May − June 2005 using the methods of bioindication and bioassay. Water quality index (WQI) was also calculated. Among 147 found species of algae and Cyanoprocaryota, 131 species were indicators of the environmental conditions. The saprobic index S ranged from 1.90 to 2.75 (III−IV classes of water quality). It has been found that household sewage from the Kane tributary essentially influence water quality in the Yarqon river. Intensive processes of self-purification within the (β-α-mesosaprobic zones are registered in the river.
Comparative Studies on Hydrocarbon Complexes of Desmodesmus Armatus (Chod.) Hegew. (Chlorophyta) under Conditions of its Cultivation in Axenic and Unialgal Cultures
29-37
10.1615/HydrobJ.v44.i2.30
V. P.
Guseynova
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
Ye. V.
Borisova
N.G. Kholodny Institute of Botany, NAS of Ukraine,
2 Tereshchenkovskaya Str., Kiev 01004, Ukraine
A. V.
Kureyshevich
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
The hydrocarbon complex of the green alga Desmodesmus armatus (Chod.) Hegew. extracted from its biomass, from the surface of its cells, and also from its cultural medium was studied by the method of chromato-mass-spectrometry. Its quantitative and qualitative composition, and also its peculiarities under different conditions of Desmodesmus armatus cultivation, was determined.
Respiration Activity of the Green Alga Desmodesmus Communis (Hegew.) Hegew. under the Influence of the Ions of Zinc
38-45
10.1615/HydrobJ.v44.i2.40
O. I.
Bodnar
Volodymyr Hnatiuk Ternopil National Teachers-Training University,
2, M. Kryvonosa Str., Ternopil 46027, Ukraine
V. V.
Grubinko
Department of General Biology and Methods of Teaching Natural Sci. Volodymyr Hnatiuk Ternopil National Pedagogical University, 2 M. Kryvonosa Str., Ternopil 46027, Ukraine
The influence of zinc on the energetic metabolism of green algae was investigated. It has been found that the functioning of succinate dehydrogenase was stimulated at the concentration of the ions of zinc in the medium of 1.0 and 2.0 mg/L. At the same time, the functioning of cytochrome-c-oxidase was stimulated at all the studied concentrations of the ions of zinc. It is likely that the stimulating effect of the ions of Zn2+ in relation to the enzymes of algae energetic metabolism was conditioned by mobilization of the protective resources of algae cells, and also by a direct influence of the metal on individual enzyme systems.
The State and the Outlook for Development of Aquatic Ecotoxicology
46-59
10.1615/HydrobJ.v44.i2.50
It is concluded that the physiological and biochemical methods are the most sensitive for assessment of the toxicity of substances differing in their chemical nature. These methods best of all meet the requirements of bioassay as compared to other methods. They provide early diagnostics and a high rate of analyses. The pollution degree of aquatic environment and concentration of toxic pollutants can be inferred from the pattern of the deterioration of certain metabolic links that appear under the action of toxic pollutants.
Assessment of Polymetalic Pollution of the Dnieper River by the Method of Calculation of the Background Content of Heavy Metals in Dreissena Bugensis
60-75
10.1615/HydrobJ.v44.i2.60
The statistically reliable excess of the background level of heavy metal content in Dreissena bugensis soft tissues was offered as the pollution criterion of some areas of the Dnieper River. The standard valuation methods for the treatment of geochemical data were used to assess the background value of heavy metal content and its threshold level. The median and the median absolute deviation (MAD) of concentrations provide the most adequate estimation of the background levels. The comparison of metal contents in mussels from 24 studied areas of the Dnieper with the threshold level allowed determination of the pollution degree of some riverbed areas.
About the Reaction of Eggs in Aquatic Invertebrates
76-82
10.1615/HydrobJ.v44.i2.70
A. V.
Koshelev
Odessa Branch of the Institute of Biology of the Southern Seas, National Academy of Sciences of Ukraine, Odessa, Ukraine
The data are given about symptoms of eggs abortion in aquatic invertebrates occurring in the toxic environment and under conditions of a higher salinity. The toxicity of metal salts was determined according to the criteria of REA — reaction of egg abortion. The eggs and embryos abortion is caused by the clonic convulsions.
Influence of Hydroquinone on the Content of Urea in the Organs of the Mantle Complex of Unio Conus (Mollusca, Bivalvia, Unionidae)
83-88
10.1615/HydrobJ.v44.i2.80
L. N.
Yanovich
Zhitomir State University, Zhitomir
A. P.
Stadnichenko
Ivan Franko Zhytomyr University Zhytomyr, Ukraine
The influence of the solutions of hydroquinone, the concentration of which accounted for 2, 5, and 10 their limiting permissible concentrations for fishery (LPCf), on the content of urea in the homogenates of the mantle and gills of Unio conus was investigated after 1, 7, and 14 days of its exposure in the toxic media. At the studied concentrations of hydroquinone, the content of urea in the gills of the mollusk decreased by 55.6−68.9%, whereas its content in the mantle of the mollusk decreased by 16.5−39.2% as compared to the control variation. Dynamics of this process were as follows: during the first day this index sharply decreased and then remained unchanged until the seventh day. From the seventh day until the fourteenth day, this index sharply decreased again.
Influence of Fulvic Acids on the Migration of Metals in the "Bottom Sediments − Water" System
89-103
10.1615/HydrobJ.v44.i2.90
Results of experimental studies on the influence of fulvic acids on the behavior of metals (Mn, Al, Cu, Zn, Pb, and Cr) in the "bottom sediments − water" system are presented. The addition of fulvic acids to the natural water, which was in contact with silted bottom sediments, resulted in the additional decrease in the concentration of dissolved oxygen, and also in the formation of anaerobic conditions in the system. As a consequence, the intensity of metals migration from bottom sediments increased. The concentration of metals in the water increased with increasing the content of fulvic acids. The peculiarities of the influence of fulvic acids on the process of desorption of some metals from bottom sediments are discussed. It has been found that the major portion of metals migrates from bottom sediments in the composition of complex compounds with dissolved organic matter, the molecular mass of which is not more than 2.0 kDa. This phenomenon is accounted for by a predominance of the above-mentioned complexes in the pore solutions of bottom sediments, and also by the process of complexation involving the fraction of the added fulvic acids of the same molecular mass.