Growing in and out of their shells in Kamchatka

The recent Benthic survey shows recovery for echinoderms and shelled molluscs in Vilyuchinskaya Bay, April 2022, following the 2020 toxic single-celled algae destroying the marine environment in Avacha Bay.

Kamchatka researchers in the Far Eastern Branch of the Russian Academy of Sciences, KSTU and divers from Kamchatka RGS completed “Monitoring of qualitative and quantitative indicators of the coastal biota of South-Eastern Kamchatka to assess the dynamics of recovery of marine communities, including finding out the causes of the death of marine mammals on the coast of the Kamchatka Peninsula in 2022” 

They are studying the consequences of the 2020 environmental disaster caused by the rapid development of toxic single-celled algae. This was the first shoot of the year. Despite unfavorable weather conditions, 6 diving dives were performed, 10 quantitative samples of benthic invertebrates and algae were collected in the sublittoral at depths from 6 to 17 m with a fishing area of 0.25 m2 and one meiobenthos sample, 3 qualitative samples of macrophyte algae were taken. The main parameters of the water environment were studied: water temperature, salinity, pH of water, percentage of dissolved oxygen, chlorophyll, turbidity from the surface to the bottom with an interval of 5 meters, at each station.

KSTU (2022) Monitoring of qualitative and quantitative indicators of the coastal biota of South-Eastern Kamchatka to assess the dynamics of recovery of marine communities, including finding out the causes of the death of marine mammals on the coast of the Kamchatka Peninsula in 2022, available at http://www.terrakamchatka.ru/index.phphttp://www.terrakamchatka.ru/index.php

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