Resource utilization scales and landscape pattern

被引:163
作者
O'Neill, R. V. [1 ]
Milne, B. T. [2 ]
Turner, M. G. [1 ]
Gardner, R. H. [1 ]
机构
[1] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA
[2] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA
基金
美国国家科学基金会;
关键词
percolation theory; probability theory; landscape ecology; scale; pattern;
D O I
10.1007/BF00138908
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
The spatial patterning of resources constrains the movement of consumers on the landscape. Percolation theory predicts that an organism can move freely if its critical resource or habitat occupies 59.28% of the landscape. Sparse resources require an organism to operate on larger resource utilization scales. Multiple critical resources necessitate larger scales, while substitutable resources ease the scale requirements. Contagious spatial patterns require larger scales to permit movement between resource clusters. The study indicates a strong link between spatial pattern and ecological processes on a landscape.
引用
收藏
页码:63 / 69
页数:7
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