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Productivity, Mortality, And Population Trends Of Wolves In Northeastern Minnesota, L. David Mech
Productivity, Mortality, And Population Trends Of Wolves In Northeastern Minnesota, L. David Mech
USGS Northern Prairie Wildlife Research Center
Population parameters, mortality causes, and mechanisms of a population decline were studied in wolves (Canis lupus lycaon) from 1968 to 1976 in the Superior National Forest. The main method was aerial radio-tracking of 129 wolves and their packmates. Due to a decline in white-tailed deer (Odocoileus virginianus), the wolf population decreased during most of the study. Average annual productivity varied from 1.5 to 3.3 pups per litter, and annual mortality rates from 7 to 65 percent. Malnutrition and intraspecific strife accounted equally for 58 percent of the mortality; human causes accounted for the remainder. As wolf …
Wolf-Pack Buffer Zones As Prey Reservoirs, L. David Mech
Wolf-Pack Buffer Zones As Prey Reservoirs, L. David Mech
USGS Northern Prairie Wildlife Research Center
Abstract. In a declining herd, surviving deer inhabited overlapping edges of wolf- pack territories. There, wolves hunted little until desperate, in order to avoid fatal encounters with neighbors. Such encounters reduce wolf numbers and predation pressure and apparently allow surviving deer along territory edges to repopulate the area through dispersal of their prime, less vulnerable offspring into territory cores.
Final Report On The Recreation Plan For Dickey-Lincoln School Lakes Project, Maine : Prepared For The Corps Of Engineers, New England Division, Northern Maine Regional Planning Commission, Land Use Consultants, Inc
Final Report On The Recreation Plan For Dickey-Lincoln School Lakes Project, Maine : Prepared For The Corps Of Engineers, New England Division, Northern Maine Regional Planning Commission, Land Use Consultants, Inc
Dickey-Lincoln School Lakes Project
The purpose of this report is to evaluate and describe the existing recreational use and resources of the project area and the encompassing study area and to project the future use of those resources both with and without the Dickey-Lincoln School Lakes Project. This study develops and evaluates a concept plan for the recreation potential of the Dickey-Lincoln School project and assesses the recreational impact of this recommended concept plan.
Transmission Reconnaissance Study : Dickey-Lincoln School Lakes Project, United States Department Of Interior
Transmission Reconnaissance Study : Dickey-Lincoln School Lakes Project, United States Department Of Interior
Dickey-Lincoln School Lakes Project
Two dams are proposed on the St. John River in northern Maine: Dickey, a high earth filled dam immediately above the confluence of the Allagash with the St. John, will have an installed generating capacity of 760 MW; and Lincoln School Dam, 11 miles downstream, a capacity of 70 MW. These dams are scheduled for completion during the mid 1980's. The U.S. Corps of Engineers, New England Division, has been allocated funds to design the project and prepare their own environmental impact statement. This report (Transmission Reconnaissance Studies) discusses alternative transmission facilities needed to connect the project with the New …