Correlation Between Fisher and Porcupine Abundance in Upper Michigan
1982; University of Notre Dame; Volume: 107; Issue: 2 Linguagem: Inglês
10.2307/2425375
ISSN1938-4238
AutoresRichard D. Earle, Kenneth R. Kramm,
Tópico(s)Ecology and biodiversity studies
ResumoThe abundance of porcupines (Erethizon dorsatum) in the Upper Peninsula of Michigan was determined from 1975 to 1977. A late winter census showed porcupines were significantly less common in areas where they coexisted with an established fisher (Martes pennanti) population (0.4 porcupines per kM2) than in areas without fishers (3.5 porcupines per kM2). Abundance of dead porcupines found along road-kill routes through two national forests in 1976 and 1977 supported winter census results.
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