Begell House Inc.
Hydrobiological Journal
HYD
0018-8166
56
2
2020
Toxicological Aspects of the Surface Water "Blooms" (a Review)
3-16
10.1615/HydrobJ.v56.i2.10
N. I.
Kirpenko
Institute of Hydrobiology,
National Academy of Sciences of Ukraine,
Kyiv, Ukraine
Yu. G.
Krot
Institute of Hydrobiology
National Academy of Sciences of Ukraine
Kyiv, Ukraine
O. M.
Usenko
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
water "bloom"
blue-green algae
algotoxins
aquatic organisms
animals
human
The paper deals with the blue-green algae species - the water «blooms» agents, which are able to synthesize highly toxic substances. The basic algotoxins and mechanisms of their impact on living organisms are characterized. Methods for determining algotoxins and quantitative limits of their presence in water bodies are discussed, as well as factors that influence the Cyanophyta toxicity. Special attention was paid to the potential hazard of algotoxins to human organism.
Formation of Energy Fluxes in Small Reservoirs
17-32
10.1615/HydrobJ.v56.i2.20
Yu. S.
Shelyuk
Ivan Franko Zhytomyr State University, Department of Botany, Bioresources and
Biodiversity Conservation,
40 Velyka Berdychivska Str., Zhytomyr 10008, Ukraine
primary production
organic matter decomposition
phytoplankton
reservoir
biotic balance
The influence of natural and anthropogenic factors on the formation of energy fluxes in small reservoirs differing in their trophic level was investigated. It has been found that the functioning of the ecosystems of deep reservoirs is of heterotrophic type. The autotrophic type of their functioning is observed in shallow water bodies, which is conditioned by intensive heating of their water column, and also by the peculiarities of their optical depth - these water bodies are totally euphotic. It has been found that for a long period of time phytoplankton primary production of small reservoirs remained almost unchanged, which is indicative of a stable functioning of their ecosystems. Phytoplankton structure transformations are responsible for this process.
Indication of the Altai Mountainous Streams Pollution by Indexes of Macroinvertebrates' Species Diversity
33-40
10.1615/HydrobJ.v56.i2.30
L. V.
Yanygina
Institute of Water and Ecological Problems SB RAS Barnaul, Russia; Altai State University Barnaul, Russia
Ye. A.
Yevseyeva
Altai Branch of Kazakh Research Institute of Fishery Ust-Kamenogorsk, Kazakhstan
species diversity
heavy metals
zoobenthos
The species diversity of benthic macroinvertebrates in small mountain river Breksa (South-Western Altai), which accepts waste waters of JSC "KazZinc" was studied. Statistically significant decrease in species richness, species diversity, abundance and biomass of zoobenthos downstream the drainage water inflow as compared to the background site was noted. Among the indices of species diversity the maximal correlations indexes were established between the zinc concentration in water and the Margalef index (r = -0,65) and species richness (r = -0,71).
Peculiarities of Summer Feeding and Trophic Specialization of Juvenile Perch in the Krivoye Lake (Northern Karelia)
41-49
10.1615/HydrobJ.v56.i2.40
A. P.
Strelnikova
Institute of Inland Waters Biology RAS Borok, Russia
N. A.
Berezina
Zoological Institute RAS St Petersburg, RF
N. N.
Zhagreva
Institute of Inland Waters Biology RAS Borok, Russia
perch
feeding
fullness index
zoobenthos
Gammarus lacustris
trophic specialization
availability
In summer of 2004-2009 the composition of stomach content in Perca fluviatilis on the benthos-eating stage (fullness index, frequency of occurrence and mass fraction of food objects) and biomass proportion of main macrozoobenthic groups were studied in oligotrophic subarctic lake (Krivoye Lake, Northern Karelia). The coastal amphipod Gammarus lacustris was the main feeding object of perch in the lake. The expressed specialization of perch feeding on large invertebrates (> 10 mm) and summer shift were revealed; summer shift in preferred food objects (from amphipods G. lacustris to insects larvae) depends on availability of large dominants in the lake benthos.
Water Quality Assessment of Some Right-bank Tributaries of the Volga River (the Cheboksary Reservoir Catchment) using Phyutoplankton Functional Classification
50-62
10.1615/HydrobJ.v56.i2.50
Ye. L.
Vodeneyeva
Nizhegorodskiy State University Nizhniy Novgorod, RF; Nizhegorodskiy Branch of All-Russian Research Institute of Fishery and Oceanography Nizhniy Novgorod, RF
K. Ye.
Kolomina
Nizhegorodskiy State University Nizhniy Novgorod, RF
Ye. M.
Sharagina
Nizhegorodskiy State University Nizhniy Novgorod, RF
P. V.
Kulizin
Nizhegorodskiy State University Nizhniy Novgorod, RF
A. G.
Okhapkin
Nizhegorodskiy State University
Nizhniy Novgorod, RF; Institute of Biology of Inland Waters Russian Academy of Sciences
Borok, Russian Federation
water quality assessment
phytoplankton "functional" groups
ecological quality ratio
index Q
saprobity
Water quality assessment of the right-bank tributaries of the Cheboksary Reservoir (Kudma and Sundovik) using the phytoplankton functional group method and calculated on its basis community index Q, showed predominance in the Kudma River indicators of eutrophication and water pollution by the organic substances (codons D and W1). The main functional groups in the potamoplankton of the shorter river (Sundovik) were codons D and TB, which comprised the planktonic diatoms randomly entering the water column from benthic communities. The use of different approaches in the water quality assessment has demonstrated higher sensitivity of the community index Q and ecological quality ratio EQR as compared with the saprobiological analysis.
Peculiarities of Green Algae Growth and Accumulation of Pigments in Their Cells under Different Conditions of Illumination and Photoperiod Length
63-72
10.1615/HydrobJ.v56.i2.60
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
green algae
growth
pigments
illumination
photoperiod
Data on the influence of the intensity of illumination and photoperiod length on the growth of green algae (Selenastrum gracile, Desmodesmus brasiliensis, and Scenedesmus obtusus), and also on the content of chlorophyll a and carotenoids in their cells, are given in the paper. It has been found that the response of the studied species of Chlorophyta to changes in the studied light parameters is species-specific. It has been shown that the increase in the duration of dark period favored the growth of the studied species of green algae. The specific content of chlorophyll a and carotenoids did not coincide with the maximal increase in algal biomass.
Hydrochemical Investigations of the Rivers and Water Bodies of the Dniester River Basin in Retrospective and under Modern Conditions
73-93
10.1615/HydrobJ.v56.i2.70
P.N.
Linnik
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
A. A.
Morozova
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kiev, Ukraine
V. P.
Osipenko
Institute of Hydrobiology
National Academy of Sciences of Ukraine
Kyiv, Ukraine
hydrochemical investigations
dissolved oxygen
dissolved solids content
nutrients
organic matter
the Dniester River
water bodies of the Dniester River
rivers of the Dniester River basin
The main hydrochemical indices, including ionic composition, dissolved solids content, water hardness, dissolved oxygen content, nutrients content, and the content of organic matter with regard to chemical oxygen demand (ChODMn and ChODCr) were investigated in the Dniester River, and also in watercourses and water bodies of its basin. It has been shown that in different sections of the Dniester River dissolved solids content increased downstream of the river, which is accounted for by the influence of both natural and anthropogenic factors. It has been found that the increase in dissolved solids content is accounted for mainly by the increase in the concentration of SO42- and Cl- ions, and also by the increase in the concentration of the sum of Na+ and K+ ions. The oxygen regime of the Dniester River is satisfactory along its whole length. However, sometimes oxygen deficiency is observed in the lower reaches of the river near its estuary, which is conditioned by the process of eutrophication. The modern state of the Dniester River in terms of the main hydrochemical indices was assessed in the sections located in different ecological regions. An effort was made to determine reference hydrochemical indices for different sections of the river.
Hydrochemical Regime of Riverbed Ponds (the Case Study of a Small Tributary of the Rybinsk Reservoir)
94-106
10.1615/HydrobJ.v56.i2.80
N. G.
Otyukova
Institute of Biology of Inland Waters Russian Academy of Sciences Borok, Russian Federation
riverbed ponds
surface layer of water
near-bottom layer of water
hydrochemical regime
a small river
Seasonal dynamics of the hydrochemical regime of two riverbed ponds located on the Ild River representing the tributary of the second order of the Rybinsk Reservoir were studied in 2008-2010. Seasonal dynamics of the concentration of hydrochemical components in the surface layer of ponds were closely similar to those in the near-bottom layer. In this case, the pond located in the wetlands of the upper reaches of the river during the whole period of investigations was characterized by a higher content of organic matter, by higher water coloration, and by a higher total content of iron and its dissolved form compared to the pond in the middle reaches of the river.