大港发电厂温排水对附近海域浮游动物影响研究

分别于2010年夏、冬季对大港发电厂温排水口附近海域浮游动物进行调查。结果表明:调查区浮游动物以桡足类和幼虫类占优势,群落结构相对稳定,但丰度明显低于渤海湾其他海区,种类组成、丰度和多样性指数具有夏季高于冬季、近岸低于远岸的时空变化特征。临近温排水口的TJHS1117站位的浮游动物群落物种数、丰度及多样性等在6个调查站位中都处于最低,可见温排水对浮游动物群落结构及平面分布有一定的影响。

Impact of Thermal Water Discharge on Zooplankton in the Sea Area near Dagang Power Plant

Zooplankton in the sea area near the thermal water discharge outlet of Dagang Power Plant was investigated respectively in the summer and winter of 2010.The results showed that zooplankton in the investigated areas were mainly composed by copepods and larvae.Their community structure was relatively stable,but the abundance was much lower than those in the other areas of Bohai Gulf.Species composition,abundance and biodiversity index had temporal and spatial variation features：they were higher in summer than in winter and increasing from the inshore area to the offshore area.Among the 6 stations,the species,abundance and biodiversity at Station TJHS1117 near to the thermal water discharge outlet were the lowest.Therefore,thermal water discharge could have a certain impact on the zooplankton community structure and horizontal distribution.