DOES THE MESH SIZE OF THE PLANKTON NET AFFECT THE RESULT OF STATISTICAL ANALYSES OF THE RELATIONSHIP BETWEEN THE COPEPOD COMMUNITY AND WATER MASSES?

作者：Wu Chih Jung; Shin Chun Ming; Chiang Kuo Ping^*

来源：Crustaceana, 2011, 84(9): 1069-1083.

DOI：10.1163/001121611X586701

We examined if the results of statistical analyses of the relationship between copepod communities and water masses would be affected by the mesh size of the plankton net, by comparing abundance and species composition of copepods in plankton samples collected by plankton nets of different mesh sizes. Our samples were collected during the summer of 2006 in the East China Sea (ECS) by plankton nets with mesh sizes of 100 and 330 mu m. The abundance of copepods collected by the 100 mu m-mesh plankton net was about two orders of magnitude higher than that collected by the 330 mu m-mesh plankton net. The difference in abundance was mainly due to the loss of small-sized copepods in the samples collected by the plankton net with the larger mesh. Species richness was higher in samples collected by the 100 mu m-mesh net and Pielou's evenness was generally higher in samples collected by the 330 mu m-mesh net. Although species composition of copepods varied in samples collected by plankton nets with different mesh sizes, the statistical analysis of the relationship between the copepod community and the water masses in these samples appeared not to be affected.

• 出版日期2011