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  • 1
    Electronic Resource
    Electronic Resource
    Indices of landscape pattern (1988)
    Springer
    Landscape ecology 1 (1988), S. 153-162 
    Details
    ISSN: 1572-9761
    Keywords: index ; dominance ; contagion ; fractal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Landscape ecology deals with the patterning of ecosystems in space. Methods are needed to quantify aspects of spatial pattern that can be correlated with ecological processes. The present paper develops three indices of pattern derived from information theory and fractal geometry. Using digitized maps, the indices are calculated for 94 quadrangles covering most of the eastern United States. The indices are shown to be reasonably independent of each other and to capture major features of landscape pattern. One of the indices, the fractal dimension, is shown to be correlated with the degree of human manipulation of the landscape.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00162741
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Resource utilization scales and landscape pattern (1988)
    Springer
    Landscape ecology 2 (1988), S. 63-69 
    Details
    ISSN: 1572-9761
    Keywords: percolation theory ; probability theory ; landscape ecology ; scale ; pattern
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00138908
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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