(Table 1) Composition of stomach and gut content of the amphipod Onisimus litoralis, and algal availability near Barrow, Alaska

Sea ice algae have been widely discussed as a potential food source for pelagic and benthic animals in ice-covered waters, specifically in the light of current substantial changes in the Arctic ice regime. Stomach and gut contents of the Arctic nearshore lysianassid amphipod Onisimus litoralis sampled from February to May 2003 indicate that Arctic ice algae were dominant food no earlier than the onset of ice melt. Crustaceans, common prey in a previous study, were absent in stomachs and guts during the survey period. Our data support the concept that sea ice-derived organic carbon is of specific relevance for Arctic plankton and benthos during the period of ice melt.

海冰藻类（sea ice algae）作为覆冰水域中浮游与底栖动物的潜在食物来源已被广泛探讨，尤其是在当前北极冰况发生显著变化的背景下。2003年2月至5月间采集的北极近岸涟虫端足类（lysianassid amphipod）物种Onisimus litoralis的胃含物与肠道内容物分析显示，北极海冰藻类仅在融冰启动后才成为其主要食物。此前研究中作为常见猎物的甲壳类，在本次调查期间的胃与肠道内容物中均未检出。本研究数据支持如下观点：在融冰期，海冰来源的有机碳与北极浮游生物及底栖生物具有特定的相关性。