Science

Wolves (Canis lupus) and arctic foxes (Alopex lagopus) are the only canid species found throughout the mainland tundra and arctic islands of North America. Contrasting evolutionary histories, and the contemporary ecology of each species, have combined to produce their divergent population genetic characteristics. 

Key words: Alopex lagopus, arctic fox, Canis lupus, dispersal, genetic structure, grey wolf, microsatellite, prey specialization.

This study characterizes population genetic structure among grey wolves (Canis lupus) in northwestern Canada, and discusses potential physical and biological determinants of this structure. 

Key words: Banks Island, gene flow, grey wolf, microsatellites, prey specialization, topographic barriers.

The article details how Type 1, 2, and 3 response functions were fit to the data using linear and nonlinear regression as appropriate and found that the evidence supported wolf population regulation by density-dependence as much as limitation by prey availability.

Key words: numerical response, prey limitation regulation, Type 1, Type 2, Type 3, wolves.

In June 2011, an estimate of the abundance of breeding female barren-ground caribou was determined, based on aerial surveys of three calving areas in Nunavut.

In June 2018, an estimated abundance of the Beverly barren-ground caribou herd was determined, based on the estimated numbers of breeding and non-breeding female barren-ground caribou within the herd’s annual concentrated calving area. Additionally, the 2011 abundance estimate was reassessed to include the Adelaide Peninsula based on updated information gathered from collared Beverly caribou movements between 2011 and 2018.

The article presents the “adehabitat” package for the R software, which offers basic GIS (Geographic Information System) functions, methods to analyze radio-tracking data and habitat selection by wildlife, and interfaces with other R packages.

Keywords: R software, Adehabitat, Habitat selection, Space use, Wildlife, Home range, Package.

This report details the the caribou popiation survey conducted on the northeastern mainland, NWT in May 1995.

The article discusses the experimental wolf reduction that occurred over a five-year period (2015-2019) within the South Peace region of northeastern British Columbia, Canada, in an attempt to address the rapid decline of Central Mountain caribou populations.

This report describes the results of a calving ground photo survey of the Bluenose-East caribou herd conducted in June of 2018 west of Kugluktuk, Nunavut (NU).

This report details the calving ground photo survey of the Bathurst caribou herd conducted during June of 2015 in Nunavut (NU).