Spatial autocorrelation with RUM (Remote Underwater Manipulator): vertical and horizontal structure of a bathyal benthic community

Deep Sea Research Pub Date : 1978-07-01 DOI:10.1016/0146-6291(78)90615-X

Peter A. Jumars

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引用次数: 90

Abstract

The RUM/ORB unmanned submersible system (Marine Physical Laboratory, Scripps Institution of Oceanography) was used at 1220-m depth to collect precisely located samples separated by distances from 0.1 to 500 m in the San Diego Trough, Southern California continental borderland. Newly developed spatial autocorrelation procedures from the field of quantitative geography were used on this irregularly spaced network of samples to test the statistical significance of the calculated autocorrelations. Scales less than 200 m showed little spatial autocorrelation in total numbers of macrofaunal individuals per sample. Density of Polyophthalamus sp. (Polychaeta, Opheliidae), however, displayed a complex autocorrelative pattern; ‘patches’ of individuals of similar size were observed. Ceratocephale pacifica (Polychaeta, Nereidae), on the other hand, showed negative spatial autocorrelation at the smallest inter-sample distance, perhaps indicative of territoriality.

Vertical segregation among confamilial and congeneric species was observed in vertically sectioned subsamples. The majority (82%) of polychaetes, however, appear regularly to inhabit the uppermost centimeter of sediments, suggesting a refinement of current bioturbation models.

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远程水下操纵器的空间自相关:深海底栖生物群落的垂直和水平结构

RUM/ORB无人潜水系统(Scripps海洋学研究所海洋物理实验室)在1220米的深度上，在南加州大陆边界的圣地亚哥海槽中，精确地收集间隔0.1到500米的样本。在这个不规则间隔的样本网络上使用了定量地理领域新开发的空间自相关程序来检验计算出的自相关的统计显著性。在小于200 m的尺度上，每个样本的大型动物个体总数的空间自相关性不大。而多毛目蛇蝇科多毛目蛇蝇的密度表现出复杂的自相关模式;观察到大小相似的个体组成的“斑块”。而在最小的样本间距离上，太平洋角鼻甲(角鼻甲多毛目，毛蚶科)则表现出负的空间自相关，这可能表明其具有领地性。在垂直剖面的亚样本中观察到亲属种和同属种之间的垂直分离。然而，大多数(82%)多毛类似乎有规律地栖息在沉积物的最上层，这表明当前的生物扰动模型得到了改进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Deep Sea Research

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