{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T21:46:01Z","timestamp":1764020761715,"version":"3.37.3"},"reference-count":109,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2024,5,3]],"date-time":"2024-05-03T00:00:00Z","timestamp":1714694400000},"content-version":"vor","delay-in-days":2,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Framsenter"},{"name":"Akvaplan-niva\/NIVA"},{"name":"WasserCluster Lunz\u2014Biologische Station"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,5,31]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Climate warming causes shorter winters and changes in ice and snow cover in subarctic lakes, highlighting the need to better understand under-ice ecosystem functioning. The plankton community in a subarctic, oligotrophic lake was studied throughout the ice-covered season, focusing on lipid dynamics and life history traits in two actively overwintering copepods, Cyclops scutifer and Eudiaptomus graciloides. Whereas C. scutifer was overwintering in C-IV to C-V stage, E. graciloides reproduced under ice cover. Both species had accumulated lipids prior to ice-on and showed a substantial decrease in total lipid content throughout the ice-covered period: E. graciloides (60%\u201338% dw) and C. scutifer (73%\u201333% dw). Polyunsaturated fatty acids of algal origin were highest in E. graciloides and declined strongly in both species. Stearidonic acid (18:4n-3) content in E. graciloides was particularly high and decreased rapidly during the study period by 50%, probably due to reproduction. The copepods differed in feeding behavior, with the omnivore C. scutifer continuing to accumulate lipids until January, whereas the herbivorous E. graciloides accumulated lipids from under-ice primary production during the last months of ice-cover. Our findings emphasize the importance of lipid accumulation and utilization for actively overwintering copepods irrespective of the timing of their reproduction.<\/jats:p>","DOI":"10.1093\/plankt\/fbae018","type":"journal-article","created":{"date-parts":[[2024,5,4]],"date-time":"2024-05-04T02:52:31Z","timestamp":1714791151000},"page":"323-337","source":"Crossref","is-referenced-by-count":3,"title":["Under ice plankton and lipid dynamics in a subarctic lake"],"prefix":"10.1093","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5468-3423","authenticated-orcid":false,"given":"Erwin","family":"Kers","sequence":"first","affiliation":[{"name":"Department of Arctic and Marine Biology, UiT The Arctic University of Norway , Framstredet 39, Troms\u00f8 9037 , Norway"}]},{"given":"Eva","family":"Leu","sequence":"additional","affiliation":[{"name":"Fram Centre, Akvaplan-niva , Hjalmar Johansensgate 14, Troms\u00f8 9007 , Norway"}]},{"given":"Per-Arne","family":"Amundsen","sequence":"additional","affiliation":[{"name":"Department of Arctic and Marine Biology, UiT The Arctic University of Norway , Framstredet 39, Troms\u00f8 9037 , Norway"}]},{"given":"Raul","family":"Primicerio","sequence":"additional","affiliation":[{"name":"Department of Arctic and Marine Biology, UiT The Arctic University of Norway , Framstredet 39, Troms\u00f8 9037 , Norway"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2388-1504","authenticated-orcid":false,"given":"Martin","family":"Kainz","sequence":"additional","affiliation":[{"name":"WasserCluster Lunz - Biologische Station , Dr. Carl Kupelwieser Promenade 5, Lunz am See 3293 , Austria"},{"name":"Research Lab for Aquatic Ecosystem Research and Health, Danube University Krems , Dr. Karl Dorrek Stra\u00dfe 30, Krems 3500 , Austria"}]},{"given":"Amanda E","family":"Poste","sequence":"additional","affiliation":[{"name":"Department of Arctic and Marine Biology, UiT The Arctic University of Norway , Framstredet 39, Troms\u00f8 9037 , Norway"},{"name":"Norwegian Institute for Water Research , \u00d8kernveien 94, Oslo 0579 , Norway"},{"name":"Norwegian Institute for Nature Research , Hjalmar Johansensgate 14, Troms\u00f8 9007 , Norway"}]}],"member":"286","published-online":{"date-parts":[[2024,5,3]]},"reference":[{"volume-title":"Reproductive Biology of the Calanoid Copepod, Eudiaptomus Graciliodes (Lilljeborg)","year":"2007","author":"Abdurhman Kelil","key":"2024062814525502600_ref1"},{"volume-title":"Lipids in Aquatic Ecosystems","year":"2009","author":"Arts","key":"2024062814525502600_ref2"},{"key":"2024062814525502600_ref3","doi-asserted-by":"crossref","first-page":"299","DOI":"10.1007\/s10584-011-0212-8","article-title":"Extreme events, trends, and variability in northern hemisphere lake-ice phenology (1855\u20132005)","volume":"112","author":"Benson","year":"2012","journal-title":"Clim. 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