황해 봄철 우점 요각류의 수괴와 관련된 분포 유형

Abstract

We measured mesozooplankton abundance and related biological (integrated chlorophyll-a concentration) and environmental (average temperature, salinity, sigma-t throughout the whole water column, and bottom depth) parameters to investigate the relationship between mesoscale spatial distribution of mesozooplankton and environmental parameters in the Yellow Sea during May 1996, 1997, and 1998. Copepods, which accounted for 60 to 87% of the total mesozooplankton abundance, were dominated by Calanus sinicus, Paracalanus indicus, Acartia omorii, and Centropages abdominalis. Abundances of C. sinicus and P. indicus, which were high outside the cold waters, were positively correlated with the whole water average temperature (p<0.01). In contrast, the abundances of C. abdominalis and A. omorii, which were relatively high in the cold waters, were associated with the integrated chl-a concentration based on factor analysis. These results indicate that the YSBCW influenced the mesoscale spatial heterogeneity of average temperature and integrated chl-a concentration; this consequently affected the spatial distribution pattern of the dominant copepods in association with their respective preferences for environmental and biological parameters in the Yellow Sea during spring.