Meiofauna Distribution in Intertidal Sandy Beaches Along China Shoreline(18?–40?N)  

作　　者：HUA Er ZHANG Zhinan ZHOU Hong MU Fanghong LI Jia ZHANG Ting CONG Bingqing LIU Xiaoshou 

机构地区：[1]College of Marine Life Science,Ocean University of China

出　　处：《Journal of Ocean University of China》2016年第1期19-27,共9页中国海洋大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.40906063,40730847,41106122,and 41076090)

摘　　要：In this study,the distribution pattern of meiofauna from nine sandy beaches at six latitudinal gradients along Chinese coast between 18 and 40?N was studied on their meiofauna abundance to examine the effect of latitudinal gradients.In general,meiofauna abundance was lower in four subtropical beaches in Xiamen(24?N) and Zhoushan(29?N) than that in other beaches.Meiofauna abundance differed little between tropical and temperate beaches.The taxonomic structure of meiofauna showed a dominance of nematode in colder area.The relative composition of turbellarians and polychaetes increased in warmer area.In addition to latitudinal gradient,salinity,oxygenation,sediment grain size affect also the meiofauna latitudinal distribution.As for horizontal distribution,the highest meiofauna abundance was found in low tidal zone at tropical beaches,and in middle tidal zone at temperate beaches.The horizontal distribution of meiofauna was controlled by both physical and biotic factors including feeding and anthropogenic activities.Although meiofauna abundance exhibited a horizontal difference,the composition of meiofaunal main taxa was unanimous horizontally at all beaches at the same sampling latitude.In this study, the distribution pattern of meiofauna from nine sandy beaches at six latitudinal gradients along Chinese coast between 18 and 40°N was studied on their meiofauna abundance to examine the effect of latitudinal gradients. In general, meiofauna abundance was lower in four subtropical beaches in Xiamen （24°N） and Zhoushan （29°N） than that in other beaches. Meiofauna abundance differed little between tropical and temperate beaches. The taxonomic structure of meiofauna showed a dominance of nematode in colder area. The relative composition of turbellarians and polychaetes increased in warmer area. In addition to latitudinal gradient, salinity, oxygenation, sediment grain size affect also the meiofauna latitudinal distribution. As for horizontal distribu- tion, the highest meiofauna abundance was found in low tidal zone at tropical beaches, and in middle tidal zone at temperate beaches. The horizontal distribution of meiofauna was controlled by both physical and biotic factors including feeding and anthropogenic activities. Although meiofauna abundance exhibited a horizontal difference, the composition of meiofaunal main taxa was unanimous horizontally at all beaches at the same sampling latitude.

关 键 词：MEIOFAUNA sandy beach ABUNDANCE horizontal distribution latitudinal variation China 

分 类 号：Q958.8[生物学—动物学]