Planktonic copepods is an important group of zooplankton.It is of great significance to study the distribu-tion characteristics of planktonic copepods abundance and its correlation with various environmental indicators.In this study,we analyzed environmental monitoring data of Haizhou Bay,Lianyungang,Jiangsu Province,from 2003 to 2022 using generalized additive model(GAM),to investigate the spatiotemporal variation of planktonic cope-pods and its correlation with other sea water indicators.The results showed that the abundance of planktonic cope-pods varied significantly different between seasons(p＜0.01),and the mean value of copepods was greater in spring than in summer than in autumn.The spatial distribution of abundance was generally low in the artificial reef area and high in the southern coastal area.GAM analysis showed that the main influencing factors were different between seasons.The main influencing factors in spring were dissolved oxygen,chlorophyll a concentration,SiO3--Si concentration and NO3--N concentration.The main influencing factors in summer were biochemical oxygen de-mand,temperature,SiO3--Si concentration and NH4+-N concentration.The main influencing factors in autumn were dissolved oxygen,salinity,suspended solids content and PO43--P concentration.This study can provide a reference for further study of zooplankton structure and habitat suitability evaluation in artificial reef waters.
关键词
浮游桡足类/季节变化/空间分布/广义加性模型分析
Key words
planktonic copepods/seasonal variation/spatial distribution/generalized additive model analysis
维普
万方数据