Article du Bulletin
Vegetation zones around woodchuck burrows [Zones de végétation autour des terriers de marmottes des bois].
Merriam H.G. & A. Merriam · 1965 · Canadian Field-Nat., 79 : 177-180.
Résumé
They noted that higher levels of nitrate nitrogen in the soil near height woodchuck burrows in pasture coincided with lusher vegetation, leading to the hypothesis that enrichment of soil with fecal nitrogen enhanced the growth of individual plants.