Species composition and quantitative distribution of the macrozoobenthos of the lower part of the Araks River of Azerbaijan
Keywords:
macrozoobentos; density; biomass; species composition; number of speciesAbstract
In 2011–2013 investigation of the lower part of the Araks River was conducted. Species composition and
quantitative distribution of the macrozoobenthos was studied. Ninety five species of invertebrate organisms
belonging to 14 systematic groups were found. Mollusks (19 species) and chironomids (17 species) are most
diverse. The total biomass of macrozoobenthos changed within 1.96–2.18 g/m2 at the density of 529–639
individuals/sq.m. The maximum development was registered in 2012. In 2011 chironomids and mollusks were
dominant. Hydrological characteristics of the Araks River were given.
References
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Zhadin V.I. Methods of studying of ground fauna of reservoirs and ecology of ground invertebrates // Life of fresh waters of the USSR. – M.-L., 1956. – T.4, p.1. – P. 226–288. (in Russian)
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