Ecological Studies of the Wolf on Isle Royale - Second Annual Report (Covering the Fourteenth Year in the Isle Royale Studies), 1971-1972
Peterson RO and Allen DL. 1972. Ecological Studies of the Wolf on Isle Royale - Second Annual Report (Covering the Fourteenth Year in the Isle Royale Studies), 1971-1972. Department of Forestry and Conservation, Purdue University. Lafayette, IN
This report summarizes the second year of study on Isle Royale by Rolf O. Peterson, who began work in June 1970. The research effort focuses primarily on wolf ecology and features wolf-moose relationships. The wolf population was dominated by two packs, West Pack (7+1); East Pack (10, numbering 7, 8, and 9 on occasion); Malone Bay Trio (3); and loners (2), for a probable total population of 23. During the winter study of 1971 the wolves had killed more moose than in any previous winter study (a total of 44 moose killed by wolves); 24 (53%) of these were moose calves born in 1970. During the summer of 1971, some moose were examined that appeared to have died from malnutrition. According to the winter census, there was no significant change in the moose population since the last census in 1970. An estimated total population of moose is 871 (+-) 233.
- Type
- Published Report
- Authors
- Peterson, Rolf; Allen, Durward
- Date of Issue
- 1972-05-15
- Publisher
- Department of Forestry and Conservation, Purdue University
- Units
- ISRO
- Keywords
- Aerial Survey, Ecology, Gray Wolf (Canis lupus), Isle Royale National Park, Mammals, Michigan, Monitoring, Moose (Alces alces), snow pack