{"id":1071,"date":"2022-04-11T15:12:04","date_gmt":"2022-04-11T13:12:04","guid":{"rendered":"https:\/\/mosj.no\/indikator\/fauna\/marine-fauna\/biomasse-av-dyreplankton-i-barentshavet\/"},"modified":"2025-11-20T10:49:35","modified_gmt":"2025-11-20T09:49:35","slug":"zooplankton-biomass-in-the-barents-sea","status":"publish","type":"bc_indicator","link":"https:\/\/mosj.no\/en\/indikator\/fauna\/marine-fauna\/zooplankton-biomass-in-the-barents-sea\/","title":{"rendered":"Zooplankton biomass in the Barents Sea"},"content":{"rendered":"\n

Last updated 8 May 2024<\/p>\n\n\n\n

Zooplankton are small animals that follow ocean currents and essentially have their entire life cycle in the free water masses. Of these, small crustaceans such as the Calanus finmarchicus<\/em> are amongst the most important. Zooplankton provides the nutritional basis for a number of plankton-eating fish, fish larvae and fry. Zooplankton monitoring contributes to increasing the understanding of changes in the populations of fish, marine mammals, seabirds and benthic communities, as well as how the ecosystem is affected by changes in the marine climate. In the Barents Sea, the biomass of zooplankton in autumn has been fairly stable, and in 2023 it was approximately qual to the average for 1997-2022.<\/p>\n\n\n\n

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Common clione (sea butterfly) photographed in a laboratorium. Photo: Tor Ivan Karlsen \/ Norwegian Polar Institute<\/figcaption><\/figure>\n<\/div>\n\n\n
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What is being monitored?<\/h2>\n\n\n\n
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Average zooplankton biomass in the Barents Sea and north and west of Svalbard<\/h3>\n\n\n\n
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