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The effects of competition and spatial heterogeneity in the environment on three perennial grasses, Aristida longiseta, Bouteloua rigidiseta and Stipa leucotricha, were investigated by transplanting small plants of each species, singly and in pairs, into undisturbed vegetation and into quadrats from which the herbaceous vegetation had been removed, in three types of micro-environment. (...)
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Norma L. Fowler (1990) studied this question.
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