Pattern analysis in Belgian limestone grasslands |
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Authors: | G Bouxin N Gautier |
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Institution: | (1) Rue des Sorbiers 33, 5101 Erpent, Belgium;(2) Laboratoire de Biométrie, Université Cloude Bernard Lyon I, 43 bd du 11 Novembre 1918, 69622 Villeurbanne Cedex, France |
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Abstract: | Pattern analyses were made in several limestone grasslands of Belgium. Vegetation has been sampled in continuous transects. Monospecific patterns are defined by means of two non-parametric indices; multivariate analysis (reciprocal averaging) completed the analysis. The following kinds of pattern are described and explained: random, aggregate, clump, gap, stationary density variation, non-stationary density variation, gradient and many complex patterns. The multivariate analysis leads to a careful phytosociological study of the transects and to the definition of floristically homogeneous regions. Some particular points of pattern analysis, the problem of vegetation sampling and some perspectives are discussed. |
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Keywords: | Belgium Brachypodietalia pinnati Brometalia erecti Limestone grasslands Non-parametric methods Pattern analysis Reciprocal averaging Transect |
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