大亚湾潮间带生物种类组成、数量分布及生物多样性研究

Study on species composition, quantity distribution and biodiversity of intertidal benthos in Daya Bay

摘要: 分析了广东省大亚湾潮间带生物的种ā类组成、数量分布和生物多样性等特点。结果表明，该海域潮间带调查采获的潮间带生物标本共70科150种，以软体动物和甲壳类出现的种类最多，二者占了总种类数的80%，其中部分属经济价值较高的种类。潮间带生物全年平均生物量为1 954.26 gm-2，平均栖息密度为1 003.77 indm-2。全年各类群生物中，平均生物量及栖息密度都以软体动物居首位。其Shannon-Weaner多样性指数(J)属中等水平，分布范围在1.419～3.562，平均为2.663。

Abstract: The characteristics of species composition, quantity distribution and biodiversity of intertidal benthos in Daya Bay of South China Sea were analyzed in this paper. The results indicated that there were 150 species belonged 70 families, species of Molluscs and Crustacea are the most which comprised 80% of all species, and some are the commercial species with high value. The average biomass and density were 1 954.26 gm-2 and 1 003.77 indm-2, respectively. The molluscs were the first in biomass and density of the benthos. The value of Shannon-Weaner index (J) was 1.419 to 3.562, average was 2.663, which was the middle level.