科普知识
Export of Algal Biomass from the Melting Arctic Sea Ice
发布日期:2014-4-18

    愈发变薄的北极海冰下积累的愈发增多的藻类生物量。图中,浮冰周围是绿色的云子冰硅藻。目前在这一地区在海冰变薄的趋势下,藻类生长将会受到进一步影响。

    In the Arctic, under-ice primary production is limited to summer months and is restricted not only by ice thickness and snow cover but also by the stratification of the water column, which constrains nutrient supply for algal growth. Research Vessel Polarstern visited the ice-covered eastern-central basins between 82° to 89°N and 30° to 130°E in summer 2012, when Arctic sea ice declined to a record minimum. During this cruise, we observed a widespread deposition of ice algal biomass of on average 9 grams of carbon per square meter to the deep-sea floor of the central Arctic basins. Data from this cruise will contribute to assessing the effect of current climate change on Arctic productivity, biodiversity, and ecological function.

    链接:http://www.sciencemag.org/content/339/6126/1430.abstract