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厦门凤林红树林湿地自由生活海洋线虫群落的研究

, PP. 147-153

Keywords: 红树林,小型底栖动物,自由生活海洋线虫,群落结构,摄食类型

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Abstract:

2004年冬季在集美凤林类似底质类型、盐度和潮位的海湾地段4个断面,就不同红树植物林中的小型底栖动物数量和自由生活海洋线虫群落进行了研究。结果表明:海洋线虫是凤林红树林中小型底栖动物中的绝对优势类群,占到小型底栖动物的76.1%~96.3%;从丰度来看,旧区白骨壤(Avicenniamarina)林中小型底栖动物的数量较少,有污水流过的光滩数量较大;4个断面共鉴定出海洋线虫37种(分类实体单元),其中新区秋茄(Kandeliacandel)林中的生物多样性指数较低,旧区白骨壤林中群落具有较高的物种多样性;从出现的物种来看,新区秋茄林、旧区白骨壤林和光滩上出现的优势种和摄食功能群的类型各不相同。从4个断面13个站位进行的聚类分析和MDS标序分析结果推断自由生活海洋线虫的群落结构与不同的红树植物形成的沉积物有关。

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