The adaptation of Arctic phytoplankton to low light and salinity in Kongsfjorden (Spitsbergen)

查看全文 作　　者：CUI [1,2]Shikai;HE [2,3]Jianfeng;HE [1]Peimin;ZHANG [2]Fang;LIN [2]Ling;MA [3]Yuxin

机构地区：[1]College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;[2]SOA Key Laboratory for Polar Science, Polar Research Institute Of China, Shanghai 200136, China;[3]College of Environmental Science and Engineering, Tongji Univeristy, Shanghai 200092, China

出　　处：《Advances in Polar Science》索引2012年第23卷第1期,共6页

基　　金：supported by the National Natural Science Foundation of China (Grant nos. 41076130, 40576002);the Youth Marine Science Foundation of SOA (Grant no. 2010116) 摘　　要：The basic environmental variables and adaptability of phytoplankton communities to low light and salinity were studied using incubation experiments in Kongsfjorden, a high Arctic fjord of Spitsbergen, in late summer 2006. Chlorophyll a concentrations were steady or decreased slightly in darkness after one day or one week incubation. Chlorophyll a concentrations showed an initial decline when exposed to natural light after one week incubation in darkness, and then increased significantly. In a salinity experiment, the maximal growth rate was observed at a dilution ratio of 10%, however, higher dilution ratios (≥40%) had an obvious negative effect on phytoplankton growth. We suggest that the phytoplankton communities in fjords in late summer are darkness adapted, and the inflow of glacial melt water is favorable for phytoplankton growth in the outer fjords where the influence of freshwater is limited. 关键词：浮游植物群落盐度北极低光照叶绿素A浓度浮游植物生长群岛环境变量

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The adaptation of Arctic phytoplankton to low light and salinity in Kongsfjorden (Spitsbergen)

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