莱州湾扇贝养殖区浮游藻类的生态特征

摘要

2015年4-11月对莱州湾扇贝养殖区的5个海域进行了8个航次的生态学调查,分析了浮游藻类的群落组成、密度、Shannon-Winner多样性指数、Pielou均匀度指数、Margalef丰富度指数和McNaughton优势度指数.调查结果表明,调查海域共鉴定出浮游藻类7门73种,其中硅藻最多,共43种,占藻类种数的58.90%.藻类密度为0.76×104~70.12×104个/L,最高密度在6月,最低在11月.藻类多样性较好,发生赤潮的概率较小.%The ecological characteristics including community composition,density,Shannon-Weiner index,Pielou index,Margalef index and McNaugton dominance index of the planktonic algae and the influence of the alga ecological characteristics on the cultured scallop were investigated in scallop culture area in Laizhou Bay by eight voyages of ecological investigation from April to November in 2015.The results showed that 73 species in 7 phyla of phytoplankton were found during the investigation,including 43 dominant species of diatom,accounting for 58.90% of the total species number.The density of phytoplankton was ranged from 0.76×104 cell/L to 70.12×104cell/L,with the peak in June and th minimum in November.The species diversity was found to be rich,with a little probability of red tide,and the species and quantity of the planktonic algae fully met the needs of the scallop growth in scallop culture area in Laizhou Bay.