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| 长江口及其邻近水域多毛类生态特点 |
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孙道元1, 董永庭2
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1.中国科学院海洋研究所;2.国家海洋局第二海洋研究所
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| 摘要: |
| 作者对“中美海洋沉积作用联合研究”1980年6月和1981年8月及11月三个航次调查所获底栖动物样品中的多毛类进行了分析，发现在长江口及其邻近水域多毛类不仅种数多，出现频率高，而且在数量分布上有其特点。本文就124°E以西20个站以箱式取样器采得的垂直分层和定量样品(经0.5mm孔目过筛)中多毛类的种类组成、生物量和栖息密度的平面分布、垂直分布及其与沉积环境的关系进行讨论。 |
| 关键词: 长江口 多毛类 |
| DOI： |
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| 基金项目:中国科学院海洋研究所调查研究报告第1254号 |
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| ECOLOGICAL FEATURES OF THE POLYCHAETES IN THE CHANGJIANG ESTUARY AND ADJACENT WATERS |
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Sun Daoyuan1, Dong Yongting2
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1.Institute of Oceanology, Academia Sinica;2.Second Institute of Oceanography, National Bureau of Oceanography
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| Abstract: |
| From the benthos samples obtained during three cruises under the "China-US Joint Study Program of Marine Sedimentation Process”in the Changjiang Estuary and adjacent waters in 1980-1981, it is noted that polychaetes are very abundant in species and average about 65% of the total benthic population. The distribution of biomass and density is extremely uneven. The number of individuals in the upper 10 cm layer of sediment is very abundant and average about 66% of the total number of polychaetes in the sediment column, but it decreases with the increase in depth of the sediment. This paper mainly presents the results of analysis of the materials collected during the first cruise, emphasis being given to the presentation of data on species ?composition, distribution of biomass and density, vertical distribution and the relationship?between the distribution of' polychaetes and the sedimentary environment. |
| Key words: POLYCHAETES CHANGJIANG ESTUARY AND ADJACENT WATERS |
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