摘要
根据 2 0 0 0年 1 0月和 2 0 0 1年 3月在 1 2 1°— 1 2 5°E、33°— 36°N海域范围内的 1 7个取样站采集的 482号采泥样品和 5 4 6号拖网样品共计 2 72种动物 ,经实验室鉴定、称重、计数、计算 ,分析研究了南黄海海域大型底栖动物在春季和秋季的分布状况。结果表明 ,在 2 72种大型底栖生物中 ,多毛类 84种 ,软体动物 76种 ,甲壳动物 83种 ,棘皮动物 2 9种。从分析结果看 ,春季和秋季大型底栖生物的栖息密度没有明显的差异 ,而生物量却变化很大 ,秋季的生物量远高于春季。这与底栖生物在春季繁殖 ,多为幼体或低龄个体 ,而秋季基本长大成熟有关。与 1 95 9— 1 960年的全国海洋综合调查对南黄海底栖生物的调查结果比较 ,表明当前该海域大型底栖生物的分布格局和生态学特点没有根本的改变 ,但春季的生物量较 1 95
This paper presents the results of ecological study of the macrobenthic fauna in the southern Yellow Sea. The materials for study were collected from 17 stations located in 121°—125°E and 33°—36°N, in October 2000 and March 2001. For quantitative analysis, sample collected by 0.1m 2 box corer, 2 successful grabs were regarded as one sample in a station, removing the mud and sand by whirlpool mud remover, filtering the specimens by 0.1 mm sieve, and fixing them by 75% alcohol for small ones or 10% formalin for big ones. For qualitative analysis, sample collected by 1.5m × 0.5m Agassiz trawl, effective trawling for 15 minute, with 2 sea mile/hour speed, fixing the specimens as the quantitative analysis. Biomass was got by weighting the wet specimen with 1/1000 gram precision electric balance. After identification, 272 species of macrobenthos were collected. They belong respectively to Polychaeta, 84 species; Mollusca, 76; Crustacea, 83; Echinodermata, 29. Based upon the analysis of the data obtained during the survey, the distribution of these macrobenthic species and their biomass and density were described and discussed. It can be concluded that: the change of the density of macrobenthos in southern Yellow Sea is not distinct between spring and autumn, while the biomass in autumn is much larger than that in spring. Comparing with the benthos research results of “The comprehensive resource investigation of Chinese coast and shallow waters” (1959—1960), and “The benthos research of oil pollution area in South Yellow Sea” (1975—1976) in the area, the distribution pattern and the ecological characteristics of the macrobenthos inhabiting in southern Yellow Sea change indistinctly, but the biomass of spring is lower than that of 1959.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2003年第1期26-32,共7页
Oceanologia Et Limnologia Sinica
基金
十五国家重点基础研究项目资助 G1 9990 43 70 9号
关键词
底栖动物
南黄海
分布
春季
秋季
生物量
种类
Macrobenthos, Southern Yellow Sea, Distribution, Spring, Autumn
