中国海洋大学学报（自然科学版）2011，Vol.41Issue(10)：67-74,8.
秋季长江口鱼类浮游生物群落时空结构
Temporal and Spatial Structure of Ichthyoplankton Assembleges in the Yangtze Estuary During Autumn
摘要
Abstract
In this study, the spatial and temporal patterns in the species composition, distribution and a bundance of ichthyoplankton were identified in the Yangtze Estuary and its adjacent sea waters. Seven surveys were conducted during November in 1998, 2000, 2002, 2003, 2004, 2007 and 2009, respectively, and ichthyoplankton was sampledfrom 40 stations. A total of 969 ichthyoplankton, representing 19 fami lies and 33 species, were collected. Ichthyoplankton species was dominated by order Perciformes (7 fami lies and 9 species). Ichthyoplankton assemblages had three habitats: brackish (12 species), coastal (10 species) and offshore (4 species) groups. The dominant species had a significant annual succession. Brackish species, Salanx prognathus and Chaeturichthys stigmatias, coastal species, Stolephorus com mersonnii, and offshore species, Engraulis japonicus and Trichiurus lepturus, had the greatest contribu tion to the total ichthyoplankton abundance. Species richness, abundance and diversity of ichthyoplankton showed a distinctly increase since 2004. ANOSIM analysis indicated that the annual variations of ichthyo plankton stucture were significant in the Yangtze Estuary, and the dissimilarities of ichthyoplankton as semblages were the highest between 2007, 2009 and other surveys. Ichthyoplankton species composition presented distinct annual variation in the Yangtze Estuary during autumn. Since 2004 in wich ichthyo plankton structures had dedicated the greatest variance, ichthyoplankton diversity had shown increasing trend.关键词
长江口/鱼类浮游生物/时空分布/生物多样性Key words
the Yangtze Estuary/ichthyoplankton/temporal and spatial distributions/biodiversity分类
生物科学引用本文复制引用
丁月旻,线薇微..秋季长江口鱼类浮游生物群落时空结构[J].中国海洋大学学报（自然科学版）,2011,41(10):67-74,8.基金项目
中国科学院知识创新工程重大项目(KZCX1-YW-08-01) （KZCX1-YW-08-01）
国家自然科学基金重大项目(30490233)资助 （30490233）
