OceanRep
Marine Lake Mogilnoe (Kildin Island, the Barents Sea): one hundred years of solitude.
Strelkov, Petr, Shunatova, Natalia, Fokin, Mikhail, Usov, Nikolay, Fedyuk, Mikhail, Malavenda, Sergey, Lubina, Olga, Poloskin, Alexey and Korsun, Sergei (2014) Marine Lake Mogilnoe (Kildin Island, the Barents Sea): one hundred years of solitude. Polar Biology, 37 (3). pp. 297-310. DOI 10.1007/s00300-013-1431-4.
![]() |
Text
Strelkov_et_al-2014-PolarBiology-Marine_Lake_Mogilnoe.pdf Restricted to Registered users only until 31 December 2024. Download (768kB) | Contact |
Abstract
Lake Mogilnoe (Kildin Island, the Barents Sea) is a marine stratified lake, a refuge for landlocked populations of marine organisms. Unlike other known marine lakes from polar areas, which communicate with the sea by water percolation at the surface, Mogilnoe has a subterranean connection with the sea like tropical and subtropical anchialine lakes. Similarly to some other marine lakes, Mogilnoe has traditionally been considered to be biologically isolated from the sea and subject to little change. We review the current status of the physical features, zooplankton and benthos of Mogilnoe and trace changes that have occurred in the lake since the start of observations in 1894. The anaerobic bottom water layer has expanded by 100 %, while the upper freshwater layer has diminished by 40 %. The species diversity of zooplankton and macrobenthos has halved. The occurrence of Atlantic cod likens Mogilnoe to some other Arctic marine lakes while the presence of large flocks of sea anemones, scyphomedusae and suberitid sponges makes it similar to tropical anchialine lakes. Lake Mogilnoe is not entirely biologically isolated; accidental introduction of species from the sea does occur. We argue that the idealised model of an isolated steady-state ecosystem can be applied to a marine lake with caution. A model of fluctuating abiotic environment and partial biological isolation portrays the real situation better.
Document Type: | Article |
---|---|
Keywords: | Anchialine lake; Meromictic lake; Isolation; Benthos; Zooplankton; Stratification; Ecology; Oceanography; Microbiology; Plant Sciences; Zoology |
Refereed: | Yes |
Publisher: | Springer |
Projects: | Otto Schmidt Laboratory |
Date Deposited: | 23 Apr 2015 10:17 |
Last Modified: | 23 Apr 2015 10:17 |
URI: | https://oceanrep.geomar.de/id/eprint/28599 |
Actions (login required)
![]() |
View Item |

Copyright 2021 | GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel | All rights reserved
Questions, comments and suggestions regarding the GEOMAR repository are welcomed
at bibliotheksleitung@geomar.de !