Benthic foraminifera along an offshore-fjord gradient: a comparison with amphipods and molluscs
Benthic foraminifera along an offshore-fjord gradient: a comparison with amphipods and molluscs
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近海峡湾梯度的底栖有孔虫：与片脚类和软体动物的比较
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
L. Buhl‐Mortensen
中科院分区：
文献类型：
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作者：
D. Klitgaard;L. Buhl‐Mortensen
在挪威沿海峡湾梯度的10个站点，对“总”（活的+死的）有孔虫的区系模式与环境因素进行了比较。TWINSPAN，一种数字分类方法将动物群分为三大类：1)主要发生在近海的物种；2)多面手种；3)主要分布在峡湾的物种。利用典型对应分析（CCA）分析了环境变量与区系格局之间的关系。解释物种数据中大多数差异的环境变量是沙子的百分比、“到池的距离”、着火损失和池底深度。这些变量加起来占方差的39%。将有孔虫动物群与同一样带的片足类动物和软体动物动物群进行了比较。这些群体对环境的反应不同。有孔虫在外峡湾地区的丰度最高，片脚类在近海，软体动物在内峡湾地区的丰度最高。有孔虫丰度的单峰响应…
Faunal pattern of ‘total’ (live+dead) foraminifera is compared with environmental factors at ten stations along an offshore-fjord gradient in Norway. TWINSPAN, a numerical classification method divides the fauna into three main groups: 1) species having their main occurrence offshore; 2) generalist species; and 3) species with their main occurrence in fjords. The relationship between environmental variables and faunal pattern is analysed using Canonical Correspondence Analysis (CCA). The environmental variables that explain most of the variance in species data are percentage sand, ‘distance to pool’, loss on ignition and sill depth. Together these variables account for 39% of the variance. The foraminiferal fauna is compared with the amphipod and mollusc fauna along the same transect. These groups respond differently to the environment. Foraminifera have their highest abundance at outer fjord localities, amphipods offshore and molluscs at inner fjord localities. A unimodal response of foraminiferal abunda...