Benthic macroinvertebrates of the northern Caspian Sea during recent rises in water-level |
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Authors: | LV Malinovskaja AA Filippov VF Osadchikh NV Aladin |
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Institution: | (1) KaspNIRH, ulitsa Savushkina 1, 414056 Astrakhan, Russia;(2) Zoological Institute RAN, Universitetskaja naberzanaja 1, 199034 St. Petersburg, Russia;(3) VNIRO, Verhnjaja Krasnoselskaja ulitsa 17, 107140 Moscow, Russia |
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Abstract: | Data on benthic macroinvertebrates of the northern Caspian Sea in 1980–1991 were collected by the Caspian Fishery Research
Institute. During the initial period of the water-level rise, the main trends in benthic macroinvertebrates were increases
in the biomass of the main groups and decreases in the relative abundance of species of Mediterranean origin. There was no
significant alteration in species composition. The increased abundance was due to improved trophic conditions and a decrease
in the numbers of benthos-feeding fish. Some decrease in the relative abundance of species of marine origin was related to
a decrease in water salinity. |
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Keywords: | benthic macroinbertebrates Caspian Sea salt lakes water-level rise zoobenthos |
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