极地研究2012，Vol.24Issue(4)：331-338,8.DOI:10.3724/SP.J.1084.2012.00331
白令海表层沉积硅藻的种类组成与分布
SPECIES COMPOSITION AND DISTRIBUTION OF DIATOMS IN SURFACE SEDIMENTS OF THE BERING SEA
摘要
Abstract
A total of 101 diatom species (including varieties and forms)belonging to 37 genera were identified from six surface sediment samples collected in the Bering Sea during the Fourth Chinese Arctic Expedition.These species were sorted into four ecological groups: the eurythermal group,the boreal-temperate group,the polar group,and the sea-ice group.In the basin area,diatoms were dominated by the boreal-temperate group,and included Neodenticula semi-nae,Thalassiosira trifulta,Rhizosolenia hebetata f.hiemalis,and Actinocyclus curvatulus.However,in the northern shelf area,the polar group was dominant and the most numerous species were Fragilariopsis oceanica,Thalassiosira antarctica spora,Thalassiosira nordenskioeldii,and Thalassiosira hyalina.Maximum diatom concentrations of 3.6 x 10 cells per g of wet sediment were recorded in the basin and minimum concentrations of 0.7 × 106cells per g of wet sediment were found in the eastern shelf area,excluding resting spores of Chaetoceros spp.The relationship between the distribution of diatoms in surface sediment and environmental factors is discussed in this paper.关键词
表层沉积/硅藻/种类/丰度/白令海Key words
surface sediment/diatom/species composition/abundance/Bering Sea引用本文复制引用
邵丽霞,林荣澄,高亚辉,黄丁勇..白令海表层沉积硅藻的种类组成与分布[J].极地研究,2012,24(4):331-338,8.基金项目
中国第四次北极科学考察专项经费项目、IPY中国行动计划、海洋公益性行业科研专项经费项目(201105022-2)和国家自然科学基金(41076079)资助 （201105022-2）
