Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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EXPERIMENTAL RESEARCH OF THE INFLUENCE OF THE SUSPENDED AT SURVIVALSHIP OF CRUSTACEANS

Mediankina M.V. 1 Sergeeva O.V. 1 Samoylova T.A. 1 Kyzmina K.A. 1
1 Russian Federal Institute of Fisheries and Oceanography (VNIRO)
This paper reports the results of experimental research of the influence of sediment settling on marine bottom dweller Gammarus aequicauda (Amphipoda). Experiments were carried out within cages in natural basin (Bugaz estuary of Kiziltash group of coastal estuaries in the Black Sea), where amphipods were collected. The crucial factor, influencing vital activity of crustaceans, was mechanical impact of sediments. When filling, at 3,2 cm sediment depth mortality of 17 % was observed, and 33,3 % of mortality - at 8,5 cm sediment depth up to 4 days. The experimental data are consistent with the currently used criteria for loss of zoobenthos in the deposition of suspended during dredging and dumping ground. From now forth on the deposition of suspended matter in the zoobenthos (and in the calculation of damage to biological resources), necessary to include the time of filling of the benthic organisms, in which their 100 % mortality is registering.