Influence of Marmota monax on Vegetation in Hayfields

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Abstract
Examination of vegetation around 29 woodchuck (Marmota monax) burrows in two hayfields in Connecticut revealed that grass biomass decreased, and forb biomass increased, as a function of distance from burrows. In addition, orchard grass (Dactylis glomerata) Medicago sativa) by 2.5%. Differential selection of orchard grass and alfalfa as food, release of grass from competition with alfalfa, and enhanced levels of nitrogen from feces all were plausible factors responsible for the distance-dependent differences in growth of vegetation.

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