【摘要】 2012年2月对海南省东寨港红树林滩涂沉积物小型底栖动物进行研究,结果表明,红树林中有六大类小型底栖动物,包括自由生活线虫、桡足类、涡虫、多毛类、寡毛类、海螨。在种类组成上,自由生活线虫为优势类群,在4个采样站位中,分别占小型底栖动物总数量的95.30%,97.02%,96.45%,90.53%。东寨港红树林小型底栖动物的总栖息密度为(1 082.23±563.76)个/(10cm2),总生物量为(764.06±511.63)μg/(10cm2)。4个采样站位平均多样性指数H′分别为0.26、0.17、0.20、0.45,平均均匀度指数J分别为0.13、0.09、0.10、0.23。最小显著极差法(LSR)进行多重比较分析表明,4个采样点小型底栖动物差异明显。海洋线虫与桡足类的数量之比(N/C)显示东寨港红树林受到了有机质污染。更多还原

【Abstract】 The meiofauna was investigated in mangrove of Dongzhai Bay,Hainan in February 2012.The results showed the main meiofauna group were Nematoda,Copepoda,Turbellaria,Polychaeta,Oligocheata,Halacaroidea and a few unidentified meiofauna in the investigated area.Free living nematode was the most dominant group,and accounted for 95.30%,97.02%,96.45%,90.53% of the meiofauna abundance in each stations.The meiofauna abundance in mangrove of Dongzhai Bay was(1 082.23±563.76)ind/(10 cm2),and the biomass was(764.06±511.63)μg/(10 cm2).The Shannon-wiener diversity index(H′)was 0.26,0.17,0.20,0.45,and Pielous species uniform(J)was 0.13,0.09,0.10,0.23,respectively.Least significant range method(LSR) for multiple comparisons analysis showed that meiofauna in each stations was significant difference.Mangrove of Dongzhai Bay could be polluted by organic matter according to ratio value of Nematoda and Copepoda.更多还原