渤海中、南部大型底栖动物物种多样性的研究

以1997年 6月、1998年9月和1999年4月共3个航次，覆盖渤海中、南部大部分海区的大型底栖动物丰度、生物量和生产力的研究为基础，进一步对其物种多样性进行了分析。结果表明：研究海域的大型底栖动物物种多样性没有明显的平面分布规律；物种多样性指数与沉积物因子的相关性高于其与底层水因子的相关性；沉积物中污染物含量的确会对大型底栖动物的多样性造成影响。通过对3个航次中3个相同站位的比较，发现不同年份之3个季节的平均Shannon Wiener指数无显著差异（P>0.05）；而1998年9月和1999年4月2个航次中20个相同站位的平均Shannon Wiener指数同样也未表现出明显的差异（P>0.05）。此外，渤海的物种数量要明显地高于胶州湾。

Macrobenthic species diversity in southern and central Bohai Sea,China

Macrobenthic species diversity in southern and central Bohai Sea was studied on the basis of quantitative investigations of macrobenthic abundance and biomass as well as secondary production in three cruises carried out in June 1997, September 1998 and April 1999. The results show that there is no obvious trend in planar distribution of macrobenthic species diversity within the surveyed areas. Statistical analysis demonstrate that diversity indices have closer relationships to sediment factors than to bottom water factors, and sediment pollutant contents have negative effects on macrobenthic species diversity. Variation of Shannon Wiener index in three seasons was not significant ( P >0.05) when comparing the averages of samples from the same three stations among the three cruises. Moreover, there is no marked difference in the average Shannon Wiener indices from 20 common stations between cruises in September 1998 and April 1999 ( P >0.05). The species number in the Bohai Sea is higher than in Jiao Zhou Bay, China.