Open AccessMacrozoobentos on the shelf of the Kronotsky Gulf
Author(s) -
Е. А. Архипова,
A.I. Buyanovsky,
Д.Д. Данилин,
S. G. Korostelev
Publication year - 2022
Publication title -
issledovaniâ vodnyh biologičeskih resursov kamčatki i severo-zapadnoj časti tihogo okeana/issledovaniâ vodnyh biologičeskih resursov kamčatki i severo-zapadnoj časti tihogo okeana
Language(s) - English
Resource type - Journals
eISSN - 2782-6236
pISSN - 2072-8212
DOI - 10.15853/2072-8212.2021.61.59-66
Subject(s) - biomass (ecology) , invertebrate , crustacean , amphipoda , range (aeronautics) , oceanography , continental shelf , fishery , ecology , biology , geography , environmental science , geology , materials science , composite material
Data about the taxonomic composition and spatial distribution of bottom invertebrates of Kronotsky Gulf were obtained on results of bottom grab survey carried in September 2002. Analysis of the samples revealed 72 species of Polychaeta, 21 species of molluscs (Bivalvia), 17 species of crustaceans (mostly Amphipoda), 2 species of echinodermata (Echinoidea and Ophiuroidea). The average biomass in the depth range 25–200 m was 242±116 g/m 2 where average density was 306±51 organisms/m 2 . The most high values of biomass were observed in the outlet parts of the rivers Zhupanova, Semyachik, Kronotskaya, where contribution of sea dollar Echinarachnius parma communities was principal. Despite fluctuations of the biomass of particular taxons during 50 years, the total biomass keeps stable (206–242 g/m 2 ). Like in 1949 E. parma plays the main role in most bottom communities.