Comparison of Phytoplankton Communities Between Melt Ponds and Open Water in the Central Arctic Ocean  

作　　者：ZHANG Tianzhen ZHUANG Yanpei JIN Haiyan LI Ke JI Zhongqiang LI Yangjie BAI Youcheng 

机构地区：[1]Key Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China [2]State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China

出　　处：《Journal of Ocean University of China》2019年第3期573-579,共7页中国海洋大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 41506222, 41776205);the Chinese Polar Environment Comprehensive Investigation & Assessment Programmes (Nos. CHINARE 2017-03-04 and 2017-0402)

摘　　要：Climate warming has a significant impact on the sea ice and ecosystem of the Arctic Ocean.Under the increasing numbers of melt ponds in Arctic sea ice,the phytoplankton communities associated with the ice system are changing.During the 7th Chinese National Arctic Research Expedition cruise in summer 2016,photosynthesis pigments and nutrients were analyzed,revealing differences in phytoplankton communities between melt ponds and open water in the central Arctic.Photosynthetic pigment analysis suggested that Fuco(5-91μg m^-3)and Diadino(4-21μg m^-3)were the main pigments in the open water.However,the melt ponds had high concentrations of Viola(7-30μg m^-3),Lut(4-59μg m^-3)and Chl b(11-38μg m^-3),suggesting that green algae dominated phytoplankton communities in the melt ponds.The significant differences in phytoplankton communities between melt ponds and open water might be due to the salinity difference.Moreover,green algae may play a more important role in Arctic sea ice ecosystems with the expected growing number of melt ponds in the central Arctic Ocean.Climate warming has a significant impact on the sea ice and ecosystem of the Arctic Ocean.Under the increasing numbers of melt ponds in Arctic sea ice,the phytoplankton communities associated with the ice system are changing.During the 7th Chinese National Arctic Research Expedition cruise in summer 2016,photosynthesis pigments and nutrients were analyzed,revealing differences in phytoplankton communities between melt ponds and open water in the central Arctic.Photosynthetic pigment analysis suggested that Fuco(5-91μg m-3)and Diadino(4-21μg m-3)were the main pigments in the open water.However,the melt ponds had high concentrations of Viola(7-30μg m-3),Lut(4-59μg m-3)and Chl b(11-38μg m-3),suggesting that green algae dominated phytoplankton communities in the melt ponds.The significant differences in phytoplankton communities between melt ponds and open water might be due to the salinity difference.Moreover,green algae may play a more important role in Arctic sea ice ecosystems with the expected growing number of melt ponds in the central Arctic Ocean.

关 键 词：the CENTRAL Arctic Ocean MELT PONDS photosynthesis PIGMENTS nutrients PHYTOPLANKTON COMMUNITIES 

分 类 号：P[天文地球]