极地研究2017，Vol.29Issue(3)：338-348,11.DOI:10.13679/j.jdyj.2017.3.338
加拿大海盆夏季冰区细菌和原生生物群落特性分析
CHARACTERISTICS OF BACTERIAL AND PROTIST COMMUNITIES IN THE SUMMER PACK ICE ZONE OF CANADA BASIN, ANTARCTICA
摘要
Abstract
During the 6th Chinese Arctic Expedition in August 2014, samples from melting ponds, sea ice, and the underlying sea water at seven ice camps in Canada Basin were collected, and the characteristics of the bacterial and protist communities were analyzed using epifluorescence microscopy. The results showed the first and second dominant groups were bacteria and heteroflagellates, respectively, with biomass percentages of 42.8%, 37.8%, 50.7%, 40.2%, 34.3%,37.5%, respectively (data from the ICE07 melting pond with an algal bloom were not included). Heterotrophic organisms such as bacteria, heteroflagellates, and ciliates dominated within the community, suggesting that the microbial loop might play an important role in the community of the pack ice zone. Under the background of rapid melting of sea ice in austral summer, the environments of all three habitats were unsuitable for rapid growth of the community and the biomass was very low. An autotrophic flagellate bloom was observed in a melting pond and within the upper 20 cm of the ice column at ICE07. We suggest that suitable quantities of both algal seed and nutrient supplement are essential for the occurrence of algal blooms on surface ice.关键词
北极/融池/海冰/细菌/原生生物/生物群落Key words
Arctic/melting pond/sea ice/bacteria/protest/community引用本文复制引用
张灿,何剑锋,黄涛,林凌,曹叔楠,张芳..加拿大海盆夏季冰区细菌和原生生物群落特性分析[J].极地研究,2017,29(3):338-348,11.基金项目
国家自然科学基金(41476168,4206189)、南北极环境综合考察与评估专项(CHINARE2011-2015)和海洋公益性行业科研专项(201105022)资助 （41476168,4206189）
