Decadal changes in taxocenes of Nematoda and Harpacticoida in Blagopoluchiya Bay (Kara Sea)
- Authors: Kondar D.V.1, Lepikhina P.V.2, Garlitska L.A.3, Udalov A.A.1, Chikina M.V.1, Mokievsky V.O.1
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Affiliations:
- P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
- Doumo
- Scientific Center of Zoology and Hydroecology, National Academy of Sciences of the Republic of Armenia
- Issue: Vol 64, No 4 (2024)
- Pages: 585-596
- Section: Морская биология
- URL: https://journal-vniispk.ru/0030-1574/article/view/280456
- DOI: https://doi.org/10.31857/S0030157424040033
- EDN: https://elibrary.ru/PRYQVG
- ID: 280456
Cite item
Abstract
The present paper describes the results of studies of two main components of meiobenthos – nematodes and harpacticoid copepods – conducted in 2013 and 2020 in Blagopoluchiya Bay (Novaya Zemlya, Kara Sea). A mosaic distribution of the two taxonomic groups was observed due to high species diversity and low occurrence of most species. Nevertheless, we identified patterns in the changes in the species structure of both groups related to the effect of two main environmental gradients (spatial gradient, related to the distance from the mouth of the bay to the sea, and depth-related gradient) as well as to the mosaic distribution of sediments. Changes among 2013 and 2020 were analyzed. In the seven years between the two surveys in Blagopoluchiya Bay, the abundance of nematodes increased tenfold, the copepod abundance also increased, but to a much lesser extent. Taxonomic changes in the two groups were observed at both species and family levels, with no differences in the functional structure of the taxa. The observed changes may be related both to changes in abiotic factors, and to general changes in the trophic system of the bay due to the introduction of the snow crab Chionoecetes opilio.
About the authors
D. V. Kondar
P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Author for correspondence.
Email: kondaria@gmail.com
Russian Federation, Moscow, 117218
P. V. Lepikhina
Doumo
Email: kondaria@gmail.com
Portugal, Coimbra
L. A. Garlitska
Scientific Center of Zoology and Hydroecology, National Academy of Sciences of the Republic of Armenia
Email: kondaria@gmail.com
Armenia, Yerevan, 0014
A. A. Udalov
P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Email: kondaria@gmail.com
Russian Federation, Moscow, 117218
M. V. Chikina
P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Email: kondaria@gmail.com
Russian Federation, Moscow, 117218
V. O. Mokievsky
P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Email: kondaria@gmail.com
Russian Federation, Moscow, 117218
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