Relative Influence of Moisture–Aeration and Nutrients on Vegetation and Black Spruce Growth in Northern Ontario

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Abstract
Results from a principal component analysis suggest that nutrient regime is more important to vegetational variation than the moisture–aeration regime. Correlations between site index and habitat measures suggest that the moisture–aeration regime influences tree growth more than the nutrient regime. For particular components of vegetational variation and for segments of the total data, the proportional influence of the two gradients varies. Moisture–aeration and nutrient regimes explain a large proportion of the variation in minor vegetation and tree growth on black spruce peatlands.

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