柘林湾附近海域大型底栖动物物种多样性

依据柘林湾附近海域2013年2月、5月、8月和12月的大型底栖动物的定量采样数据,对该海域的大型底栖动物物种多样性进行研究。结果表明,全年共出现大型底栖动物89种,全年平均Margalef丰富度指数为1.73,Shannon-Wiener多样性指数为1.84,Pielou均匀度指数为0.88;单因素方差分析表明,4个季度的丰富度指数、多样性指数和均匀度指数均不存在显著性差异;丰度的k-优势度曲线表明,4个季度的多样性水平为冬>春≈秋>夏。R型聚类结果表明,丰富度指数、多样性指数和均匀度指数可以归为一类群;曲线拟合表明多样性指数与丰富度指数之间、多样性指数与种类数之间、丰富度指数与种类数之间的相关性相对较高。Q型聚类结果表明,大致可将28个站位分成3类群或者5类群。

Macrobenthic species diversity in the waters surrounding Zhelin Bay

  Macrobenthic species diversity in the waters surrounding Zhelin Bay was studied based on the quantitative data of macrobenthos sampled in February, May, August, and December 2013. The results show that 89 macrobenthic species were sampled in 2013. Mean Margalef richness index, Shannon-Wiener index, and Pielou evenness index val- ues were 1.73, 1.84, and 0.88, respectively. One-way analysis of variance showed that the richness, diversity, and even- ness indices were not significantly different among seasons. The k-dominance curve of abundance showed that the sea- sonal trend in species diversity was winter > spring » autumn > summer. An R-type cluster analysis showed that the rich- ness, diversity, and evenness indices could be classified as a cluster. The correlations between the diversity index and richness index, the diversity index and species number, and the richness index and species number were relatively high. A Q-type cluster analysis showed that the 28 sampling stations could be classified into three or five clusters.