| 白令海表层沉积硅藻的种类组成与分布 |
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| 引用本文： | 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. |
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| 作者姓名： | 邵丽霞 林荣澄 高亚辉 黄丁勇 |
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| 作者单位： | 1.厦门大学生命科学学院，近海海洋环境科学国家重点实验室，福建 厦门 361005；
;2.国家海洋局第三海洋研究所，福建 厦门 361005 |
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| 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;国家自然科学基金 |
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| 摘 要： | 摘要 利用2010年中国第四次北极科学考察白令海获取的6个站位的沉积物样品，分析了表层1cm的沉积硅藻，共检出分属于37个属的101个硅藻种（含变种和变型），并编制了种类名录。这些种类可分为4个生态类群：（1）广温种；(2)北方温带种；(3)极地种；(4)海冰种。白令海西南海盆区以北方温带种占绝对优势，主要有Neodenticula seminae，Thalassiosira trifulta，Rhizosolenia hebetata f. hiemalis、Actinocyclus curvatulus；而在东北陆架区以极地种为主，主要包括Fragilariopsis oceanica，Thalassiosira antarctica spora，Thalassiosira nordenskioeldii、Thalassiosira hyalina。海盆区站位沉积硅藻丰度最高，为3.7×106个/g湿重(不包括角毛藻休眠孢子）,而东部陆架区丰度最低，仅有0.7×106个/g。本文同时探讨了表层沉积硅藻分布与环境的关系。
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| 关 键 词： | 表层沉积 硅藻 种类 丰度 白令海 |
| 收稿时间： | 2012-03-09 |
SPECIES COMPOSITION AND DISTRIBUTION OF DIATOMS IN SURFACE SEDIMENTS OF BERING SEA |
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| Shao Lixia,Lin Rongcheng,Gao Yahui,Huang Dingyong.SPECIES COMPOSITION AND DISTRIBUTION OF DIATOMS IN SURFACE SEDIMENTS OF BERING SEA[J].Chinese Journal of Polar Research,2012,24(4):331-338. |
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| Authors: | Shao Lixia Lin Rongcheng Gao Yahui Huang Dingyong |
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| Abstract: | Abstract Based on 6 surface sediment samples, which were collected in the Being Sea during the Forth Chinese Arctic Expedition, a total of 101 diatom species (including varieties and forms) belonging to 37 genera had been detected. These species can be sorted into four ecological groups:（1）Eurythermal group;（2）Boreal-temperate group;（3）Polar group; and（4）Sea-ice group. In the basin area, diatoms were dominated by boreal-temperate group, including Neodenticula seminae、Thalassiosira trifulta、Rhizosolenia hebetata f. hiemalis and Actinocyclus curvatulus. However, in the northern shelf area, they were mainly polar group with the dominant species of Fragilariopsis oceanica、Thalassiosira antarctica spora、Thalassiosira nordenskioeldii and Thalassiosira hyaline. Diatom concentrations show the maximum of 3.6×106 cells per gram wet sediment in the basin and minimum of 0.7×106 cells per gram wet sediment in the eastern shelf, excluding resting spores of Chaetoceros spp. The relationship between the distribution of diatoms in surface sediment and environmental factors was discussed in this study. |
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| Keywords: | surface sediment diatom species composition abundance Bering Sea |
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