天津港临港工业区附近海域中小型浮游动物群落结构

为了解天津港临港工业区附近海域中小型浮游动物的现状,于2014年4月至11月对该海域进行了5个航次调查,用浅水Ⅱ型浮游生物网采集了浮游动物样品,分析了中小型浮游动物的种类组成、丰度变化、生物多样性及群落结构。本次调查共鉴定浮游动物29种,主要优势种为夜光虫、多毛类幼虫、双刺纺锤水蚤、异体住囊虫等;浮游动物的丰度为110.89~2236.90个/m3;中小型浮游动物的多样性指数、均匀度指数和丰富度指数变化分别为0.4764~1.5732、0.1949~0.6086和0.6709~0.9158。水质生物学评价指标显示,调查海域的水质处于中度重污染或严重污染水平。

Community Structure of Microzooplankton in Industrial Estate Waters in Tianjin Harbour

The species composition ,abundance ,diversity and community structure of microzooplankton in the industrial estate water in Tianjin Harbour was studied by survey using a shallow water style planknton net from April to November in 2014 in order to investigate the current situation of meso‐and micro‐zoo‐plankton in the industrial estate water in Tianjin Harbour .A total of 29 zooplankton species were found , with the main dominant species/taxa of Noctiluca scintillans ,Polychaeta larva ,Acartia bifilosa and Oikopleura dioica .The abundance of meso‐ and micro‐zooplankton was ranged from 110 .89 ind/m3 to 2236 .90 ind/m3 ,with Shannon‐Weaver Index of 0 .4764—1 .5732 ,Pielou Evenness Index of 0 .1949—0 .6086 and Margalef Index of 0 .6709—0 .9158 ,indicating that the water quality in the survey area was within medium and heavily polluted .