Abstract
The morphological and biological characteristics of the unique isolated population of the Kildin cod that inhabit the relic Lake Mogilnoye (Kildin Island, Barents Sea) were studied using a complex of methods. This subpolar meromictic marine lake was formed more than 1000 years ago by a filtering pebble–stone bar that separated the lagoon from the Kildin Strait. The current status of the lake has been assessed. An analysis of the properties of the Lake Mogilnoye ecosystem, including assessment of this body of water and the role and features of various groups of organisms, has been performed for the first time by using a balance model of the ECOPATH type.
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