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Is spatial autocorrelation an intrinsic property of territory size?

机译:空间自相关是地域大小的固有属性吗?

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摘要

In animals, competition for space and resources often results in territorial behaviour. The size of a territory is an important correlate of fitness and is primarily determined by the spatial distribution of resources and by interactions between competing individuals. Both of these determinants, alone or in interaction, could lead to spatial non-independence of territory size (i.e. spatial autocorrelation). We investigated the presence and magnitude of spatial autocorrelation (SAC) in territory size using Monte Carlo simulations of the most widely used territory measures. We found significant positive SAC in a wide array of competition-simulated conditions. A meta-analysis of territory size data showed that SAC is also a feature of territories mapped based on behavioural observations. Our results strongly suggest that SAC is an intrinsic trait of any territory measure. Hence, we recommend that appropriate statistical methods should be employed for the analysis of data sets where territory size is either a dependent or an explanatory variable.Electronic supplementary materialThe online version of this article (doi:10.1007/s00442-009-1509-4) contains supplementary material, which is available to authorized users.
机译:在动物中,争夺空间和资源通常会导致领土行为。区域的大小是适应性的重要因素,主要取决于资源的空间分布以及竞争个体之间的相互作用。这两个决定因素,无论是单独还是相互作用,都可能导致领土规模在空间上不独立(即空间自相关)。我们使用最广泛使用的地域测量方法的蒙特卡洛模拟研究了地域大小中空间自相关(SAC)的存在和大小。我们在广泛的竞争模拟条件下发现了显着的阳性SAC。对地域大小数据的荟萃分析显示,SAC还是基于行为观察映射的地域特征。我们的结果强烈表明,SAC是任何领土措施的内在特征。因此,我们建议使用适当的统计方法来分析区域大小是因变量或解释变量的数据集。电子补充材料本文的在线版本(doi:10.1007 / s00442-009-1509-4)包含补充材料,授权用户可以使用。

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