辽宁省黄海北部沿岸夏季和秋季浮游动物群落结构

2014年8月(夏季)和10月(秋季)对辽宁省黄海北部沿岸海域进行了2个航次的浮游生物调查,共检测出浮游动物35种,其中夏季30种,秋季34种。浮游动物以小型桡足类和浮游幼虫为主。洪氏纺锤水蚤、短角长腹剑水蚤、小拟哲水蚤、近缘大眼剑水蚤、强壮箭虫、异体柱囊虫和双壳类幼体为夏季优势种;洪氏纺锤水蚤、短角长腹剑水蚤、近缘大眼剑水蚤、强壮箭虫、异体柱囊虫、桡足类幼虫、沃氏纺锤水蚤为秋季优势种。夏季浮游动物生物量高于秋季,生物量则低于秋季。季节变化会影响浮游动物的丰度和生物量。辽宁省黄海北部沿岸浮游动物丰度、生物量较高,小型桡足类在黄海北部沿岸浮游动物群落结构中具有重要的作用。

Community Structure of Zooplankton in Coastal Liaoning of Northern Yellow Sea in Summer and Autumn

Community structure of zooplankton in coastal Liaoning of northern Yellow Sea was studied based on seasonal investigation data collected in August (summer) and October (autumn) of 2014 .Thirty‐five species of zo‐oplankton were found ,with thirty species in summer and thirty‐four in autumn .The small copepod and planktonic larvae were found to be the dominant groups ,including dominant Acartia hongi ,Oithonabre vicornis ,Paracala‐nus parvus ,Corycaeus af f inis ,Sagitta crassa ,Oikopleura dioica ,and Lamellibranchia larvae in the summer , and dominant A .hongi ,O .brevicornis ,C .af f inis ,S .crassa ,O .dioica ,nauplii ,and A .omori in the autumn . There was higher biomass in summer than that in autumn ,whereas there was less abundance in summer than that in autumn ,indicating that the biomass and abundance of zooplankton is varied with season .Small‐sized copepods , i e ,mature and stabilization of the zooplankton ,were shown to play an important role in community feature in coastal waters of Northern Yellow Sea .