Expérimentation sur la compétition interspécifique par élimination sélective d'espèces forestières

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Abstract
We conducted an experimental study of competition for water, heat, and space between woody species and herbaceous species by selective exclusion of a few species in a sugar maple stand. We found large differences in diameter and height increment for all three species under investigation: sugar maple, yellow birch, and beech. Large differences were also found in soil temperatures to a depth of 30 cm which were correlated with cover and growth increment. We concluded that there is indeed a severe competition between woody and herbaceous species for both heat and space.