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Journals and Conferences
Saline rivers are supposed to be ‘hot spots’ of high biological productivity in arid landscapes. To test this, we quantified the production of chironomid larvae, because river production is known to be transferred to arid landscapes primarily by birds fed on these larvae. In addition, we studied the potential biochemical quality of the larvae for birds… (More)
The review of the salinity tolerance of various macrozoobenthos taxa is based on the published data and the results of our studies. Significant differences in the tolerance of hydrobionts to water salinity in rivers of different arid regions are shown. Leeches, bivalved mollusks, larvae of stoneflies, caddis flies, and mayflies are the most stenohaline… (More)
Models for relationship between sampling effort and estimates of species number and other characteristics of species diversity are considered and evaluated. In the analysis, different randomization algorithms and other statistical methods of monitoring data processing are used including jackknife and bootstrap procedures, algorithms ICE and Chao2,… (More)
The list of alien species, their abundance, and distributional patterns are described for the macrozoobenthic and nectobenthic communities of coastal areas of the Saratov Reservoir on the basis of studies conducted in 2006–2009. The disappearance of several native species is indicated.
Benthos investigations were carried out in the channel and flood-plain of the Kuibyshev water reservoir during 1958–1985. Hydrobiological monitoring data obtained at 12–16 stations in all Deeps excluding littoral areas are discussed. In 1987–1900 benthofauna distribution was also studied at the Priplotinny Deep. An increase of the reservoir trophic state is… (More)
The present paper deals with the results of the first study (April and August, 2006–2007) of the taxonomic composition of macrozoobenthos in the highly mineralized Khara River. The study revealed 35 species and taxa of the rank above species. Data were obtained on the spatial distribution of the species composition dynamics and on the quantitative… (More)
Karyotype and morphology of Chironomus sp. larvae from the Caspian Sea have been described. 2n = 8. Chromosomal arm combination is AB, CD, EF, G (cytocomplex thummi). All chromosomes display conjugation of homologues. Centromere areas are of s-type. The nucleolar organizer and two Balbiani rings are disposed in arm C, and another Balbiani ring is in arm B.… (More)
Stability is a major quality of systems. We discuss the mathematical formalization and hydrobiological examples of various definitions of stability: Lyapunov, Lagrange (steadiness), Poisson (periodic stability), Svirezhev (hierarchical), Holling (resilience), Fleishman (vitality), and Gnedenko (reliability) stabilities.
Results of a long-term study of the biomass dynamics and distribution of two introduced species, the polychaete Hediste diversicolor and the mollusk Abra ovata, in the eastern and western areas of the North Caspian Sea during the period of the sea’s transgression (1978–2007) are analyzed. The distribution of the introduced species in years with different… (More)
Data on long-term studies (1948–2006) of the quantitative development and distribution of the invasive mollusk Mytilaster lineatus in the northern part of the Caspian Sea in different periods of formation of the marine ecosystem are presented.