Affiliation:
1. Zoological Institute of Russian Academy of Sciences
2. Russian Federal Research Institute of Fisheries and Oceanography, Saint Petersburg Branch of the Federal State Budget Scientific Institution
Abstract
The growth and production of glacial relic amphipods Monoporeia affinis (Lindström, 1855) in a small subarctic lake were studied based on detailed seasonal observations in 2019–2021. Growth and production were closely related to trophic conditions (chlorophyll a concentration). The maximum values were observed at low water temperatures (~5°C) in early summer, coinciding with the spring maximum of chlorophyll. The summer warming of bottom waters was accompanied by a decrease in the growth rate of amphipods, which is apparently associated with the consumption of most of the primary production in the pelagic zone. It is concluded that current climatic conditions can adversely affect glacial relicts even in cold-water lakes of the subarctic zone.
Publisher
The Russian Academy of Sciences
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