Distribution and Demography of Antarctic Krill and Salps in the Atlantic Sector of the Southern Ocean during Austral Summer 2021

Distribution and Demography of Antarctic Krill and Salps in the Atlantic Sector of the Southern Ocean during Austral Summer 2021–2022

Published:2022-11-23 Issue:23 Volume:14 Page:3812
ISSN:2073-4441
Container-title:Water
language:en
Short-container-title:Water

Author:

Bitiutskii Dmitrii G.^ORCID,Samyshev Ernest Z.,Minkina Natalia I.,Melnikov Victor V.^ORCID,Chudinovskih Elena S.,Usachev Sergei I.,Salyuk Pavel A.,Serebrennikov Alexander N.,Zuev Oleg A.^ORCID,Orlov Alexei M.^ORCID

Abstract

The study aimed to investigate krill (Euphausia superba) and salp (Salpa thompsoni) populations in the Atlantic sector of the Southern Ocean in January and February 2022. Samples were obtained to measure the abundance, biomass and distribution patterns of krill and salp. Sex differences and feeding habits of the Antarctic krill were determined. The dependence of the physiological state of the studied aquatic organisms on changes in environmental parameters was analyzed. Current data on the association of the dynamics of hydrometeorological parameters and processes with the distribution of chlorophyll a, krill, and salp were obtained. It was established that, at numerous stations, the biomass of salps prevailed over krill. The result indicates the replacement of the Antarctic krill populations by gelatinous zooplankton. The obtained results allow assessment of the biological resource potential in the studied region based on the analysis of the samples collected.

Funder

Russian state task

Russian Science Foundation

State Assignment KarRC

Comprehensive environmental studies of the Southern Ocean

Functional, metabolic and toxicological aspects of the existence of hydrobionts and their populations in biotopes with different physico-chemical regime

Publisher

MDPI AG

Subject

Water Science and Technology,Aquatic Science,Geography, Planning and Development,Biochemistry

Link

https://www.mdpi.com/2073-4441/14/23/3812/pdf

Reference93 articles.

1. Rintoul, S.R., Sparrow, M., Meredith, M.P., Wadley, V., Speer, K., Hofmann, E., Summerhayes, C., Urban, E., and Bellerby, R. (2012). The Southern Ocean Observing System: Initial Science and Implementation Strategy, SCAR.

2. Trathan, P.N., and Hill, S.L. (2016). Biology and Ecology of Antarctic Krill, Springer.

3. Sologub, D.O. (2016). Modern Features of Distribution, Biology and Horizontal Migrations of Antarctic Krill (Euphausia superba) in the Atlantic Sector of Antarctica. [Ph.D. Thesis, VNIRO Publ. House].

4. Nicol, S., and Foster, J. (2016). Biology and Ecology of Antarctic Krill, Springer.

5. Oceanic Circumpolar Habitats of Antarctic Krill;Mar. Ecol. Prog. Ser.,2008

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