Massive Phytoplankton Blooms Under Arctic Sea Ice
Massive Phytoplankton Blooms Under Arctic Sea Ice
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DOI：
10.1126/science.1215065
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发表时间：
2012-06-15
期刊：
影响因子：
56.9
通讯作者：
Swift, James H.
中科院分区：
文献类型：
--
作者：
Arrigo, Kevin R.;Perovich, Donald K.;Swift, James H.
北冰洋大陆架上的浮游植物大量繁殖被认为仅限于没有海冰的沃茨。在这里，我们记录了大量的浮游植物盛开完全巩固的浮冰下远离楚科奇海的冰缘，在那里，由于冰层变薄和融化的池塘扩散，透光率在最近几十年增加。水华的特点是高硅藻生物量和增长率和初级生产力。有证据表明，冰下浮游植物大量繁殖可能在营养丰富的北极大陆架上更为普遍，卫星对这些沃茨年初级生产量的估计可能被低估了10倍。
Phytoplankton blooms over Arctic Ocean continental shelves are thought to be restricted to waters free of sea ice. Here, we document a massive phytoplankton bloom beneath fully consolidated pack ice far from the ice edge in the Chukchi Sea, where light transmission has increased in recent decades because of thinning ice cover and proliferation of melt ponds. The bloom was characterized by high diatom biomass and rates of growth and primary production. Evidence suggests that under-ice phytoplankton blooms may be more widespread over nutrient-rich Arctic continental shelves and that satellite-based estimates of annual primary production in these waters may be underestimated by up to 10-fold.