【摘 要】
：
2012年春季、夏季和秋季分别对滨州浅海大型底栖动物进行了18个站位3个航次的外业调查研究,结果表明:已鉴定出大型底栖动物81种,其中软体动物27种、多毛类20种、甲壳动物18种
【机 构】
：
山东省淡水渔业研究院,山东省淡水水产遗传育种重点实验室,山东济南250013;滨州市海洋与渔业研究所,山东滨州,256616
论文部分内容阅读
2012年春季、夏季和秋季分别对滨州浅海大型底栖动物进行了18个站位3个航次的外业调查研究,结果表明:已鉴定出大型底栖动物81种,其中软体动物27种、多毛类20种、甲壳动物18种、棘皮动物1种和其他类5种;春季(78种)最高,夏季(47种)次之,秋季(39种)最低;软体动物、多毛类和甲壳动物是构成该海域底栖动物的主要类群.大型底栖动物多样性指数为0.17～3.69,平均值为1.73±0.22;丰富度指数为0.59～ 3.05,平均值为1.75±0.24;均匀度指数为0.04～1.00,平均值为0.46±0.10;优势度指数为1.03 ～ 10.76,平均值为3.29±0.91.多样性指数、均匀度指数和优势度指数均为夏季最高,秋季次之,春季最低;而丰富度指数则为春季最高,夏季次之,秋季最低.栖息密度和生物量平均值均相对较高,分别为3836.83 ind./m2和48.65g/m2;均以春季最高,秋季次之,夏季较低;不同季节均以软体动物占绝对优势,为最高,其次为甲壳动物和多毛类,其他类和棘皮动物相对较低.滨州浅海环境质量总体以轻度污染为主,与我国主要河口水域相比,属于环境质量较好的区域.
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