极地研究2016，Vol.28Issue(1)：25-33,9.DOI:10.13679/j.jdyj.2016.1.025
2012年夏季北极浮冰生物群落结构及垂直分布特征研究
PACK ICE COMMUNITY STRUCTURE IN THE ARCTIC OCEAN DURING SUMMER 2012
摘要
Abstract
As a part of the Arctic Ocean ecosystem , the sea ice community plays important roles in primary production and the carbon cycle .In this study , we used the fluorescence microscopy technique to analyze samples of the pack ice community , collected from the central Arctic Ocean in summer 2012 .The results showed that the average inte-grated biomass was (105.85 ±53.41) mg C· m-2 , of which heterotrophic bacteria comprised 47.2%, followed by diatoms ( 26.7%), heterotrophic flagellates ( 18.2%), autotrophic flagellates ( 6.9%), and ciliates (1.0%).An autotrophic flagellate bloom was observed at the bottom of the high-latitude station (87°39.598′N, 123°43.454′E) .The community of this station was in the late period of diatom algal bloom and there was consider-able melting of the upper sea ice layer , which could have led to a suitable habitat at the bottom for autotrophic flag-ellate growth ( the higher ratios of N/P) .It is suggested that the melting of sea ice in recent years has had obvious influence on the pack ice community in the Arctic Ocean .For example , the biomass of the heterotrophic taxa has increased and heterotrophic bacteria have replaced diatoms as the dominant group .关键词
北冰洋中心区/浮冰/海冰生物群落/融冰环境相关性Key words
central area of Arctic Ocean/pack ice/ice biota/melting ice/environmental correlation引用本文复制引用
贾书磊,张芳,林凌,贾睿,何培民,何剑锋..2012年夏季北极浮冰生物群落结构及垂直分布特征研究[J].极地研究,2016,28(1):25-33,9.基金项目
国家自然科学基金(41476168,41206189),国家海洋局“南北极环境考察与评估”专项(CHINARE2011－2015),海洋公益专项(201105022)以及国家海洋局极地考察办公室对外合作专项(IC201307)资助 （41476168,41206189）
