Patterns in the spatial arrangements of polychaetes and bivalves in intertidal sandflats
Patterns in the spatial arrangements of polychaetes and bivalves in intertidal sandflats
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潮间带沙坪多毛类和双壳类动物的空间排列格局
DOI：
10.1007/bf00438355
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发表时间：
1989
期刊：
影响因子：
2.4
通讯作者：
R. Pridmore
中科院分区：
文献类型：
--
作者：
S. Thrush;J. Hewitt;R. Pridmore
以Moran系数为基础，构建了常见多毛类（Goniada emerita、Heteromastus filiformis、Macroclymenella stewartensis、Boccardiaspp.）还有Magelona？1987年10月，在新西兰Manukau港的潮滩上采集了两种贝类（Nuculahartvigiana，SoletellinasiliquaandTellinaliliana）和两种贝类（Nuculahartvigiana，SoletellinasiliquaandTellinasililiana）。在小于样本间距离的尺度上的异质性模式、均匀密度斑块（5至30米半径）和贯穿样本点（9 000平方米）的丰度梯度被确定。模式可以被定义，即使是物种的分布，根据方差：平均值比检验，没有显着不同的随机。两个研究站点的沉积物扰动所产生的摄食射线的可能影响进行了讨论。空间格局的识别被认为是调查和操纵性实地实验设计的一个重要方面。
Spatial autocorrelation correlograms based on Moran's coefficient were constructed for common polychaetes (Goniada emerita, Heteromastus filiformis, Macroclymenella stewartensis, Boccardiaspp. andMagelona? dakini)_and bivalves (Nucula hartvigiana, Soletellina siliquaandTellina liliana) collected from intertidal sandflats of Manukau Harbour (New Zealand) during October, 1987. Patterns of heterogeneity on a scale smaller than inter-sample distance, homogenous density patches (5 to 30 m radius) and gradients in abundance running through sample sites (9 000 m2) were identified. Patterns could be defined even for species with distributions which, based on the variance: mean ratio test, were not significantly different from random. The possible influence on two of the study sites of sediment disturbances generated by feeding rays is discussed. Identification of spatial patterns is considered an important aspect of the design of surveys and manipulative field experiments.