Results 131 to 140 of about 57,079 (322)

Rethinking the basic conservation unit and associated protocol for augmentation of an "endangered" caribou population: An opinion

Rangifer, 2007
Use of the subspecies as the basic unit in the conservation of endangered caribou (Rangifer tarandus) would produce a “melting pot” end-product that would mask important genotypic, phenotypic, ecological, and behavioral variations found below the level ...
Frank L. Miller, Samuel J. Barry, Wendy A. Calvert, Keri A. Zittlau   +3 more
doaj   +1 more source

Estimating red deer Cervus elaphus population density using drones in a steep and rugged terrain

Wildlife Biology, EarlyView.
Precise and accurate information about population density, crucial for wildlife management, is difficult to obtain for elusive species living in dense forests or steep and inaccessible terrain. Using unmanned aerial vehicles (UAVs), we developed a method for obtaining absolute population estimates of ungulates living in steep, rugged, and partly ...
Julie Bommerlund, Torbjørn Ergon, Simon Filhol, Atle Mysterud   +3 more
wiley   +1 more source

An uncertain future for woodland caribou (Rangifer tarandus caribou): The impact of climate change on winter distribution in Ontario

Rangifer, 2017
Habitat alteration and climate change are two important environmental stressors posing increasing threats to woodland caribou, Rangifer tarandus caribou, in Ontario.
Sara Masood, Thomas M. Van Zuiden, Arthur R. Rodgers, Sapna Sharma   +3 more
doaj   +1 more source

Delineating seasonal shifts in reindeer habitat and diet selection by integrating GPS telemetry and stable isotope analysis

Wildlife Biology, EarlyView.
Seasonal changes shape herbivore behaviour by altering forage availability and habitat conditions; however, few studies integrate diet and habitat selection data across temporal scales. This study uses seasonality as a unifying framework to combine fine‐scale GPS‐based habitat selection data with broader‐scale dietary information from stable isotope ...
Tamara A. Hiltunen, Sami M. Kivelä, Jouko Kumpula, Jouni O. Aspi, Jeffrey M. Welker   +4 more
wiley   +1 more source

Successful and unsuccessful attempts to resolve caribou management and timber harvesting issues in west central Alberta

Rangifer, 1996
Research studies of woodland caribou in west central Alberta began in 1979 in response to proposed timber harvesting on their winter ranges. Using results from initial studies, timber harvest guidelines were developed. A recent review of these guidelines,
David Hervieux, Janet Edmonds, Richard Bonar, Jim McCammon   +3 more
doaj   +1 more source

Pairing Spruce Budworm Control and Minimal Understory Perturbations: Effects of Btk Spraying Frequency in Boreal Forests. [PDF]

Ecol Evol
Spruce budworm epidemic induces tree mortality and modifies understory communities. Could aerial spraying of Btk reduce perturbations in understory communities? Biannual Btk spraying could prevent both wood loss and understory degradation. ABSTRACT Since 1985, more than 10 million hectares of Canadian forests have been treated against spruce budworm ...
Robitaille M, Pothier D, Pellerin S.
europepmc   +2 more sources

Both forest cover and land management practices explain variation in recovering pine marten densities

Wildlife Biology, EarlyView.
Robust monitoring of wildlife populations to guide interventions is fundamental to conservation and wildlife management. Understanding how landscape characteristics are influencing predator population dynamics is often vital to inform recovery strategies, management, and policy. The pine marten Martes martes is recovering in the UK; however, population
Keziah J. Hobson, Chris Sutherland, Cristian Navarro Waggershauser, Deborah A. Dawson, Gavin J. Horsburgh, Lucy S. Knowles, Xavier Lambin   +6 more
wiley   +1 more source

Status of woodland caribou in western north America

Rangifer, 1991
A review of current population size and trends of woodland caribou (Rangifer tarandus caribou) in seven jurisdictions in western North America shows a wide range of situations.
E. Janet Edmonds
doaj   +1 more source

North Slope Borough water study: a background for planning [PDF]

, 1977
The Planning and Research Section of Alaska Dept. of Natural Resources initiated this pilot water study with the North Slope Borough and the University of Alaska's Arctic Environmental Information and Data Center and Institute of Water Resources ...
Dreyer, Linda Dwight, Johnson, Ronald A.
core  

Parturition timing and the pre‐ and post‐partum behaviour of female moose assessed using animal‐borne video and movement‐based approaches

Wildlife Biology, EarlyView.
Limited information on moose calving behaviour, including parturition timing, cow‐calf interactions, and pre‐ and post‐partum movement patterns hinder our ability to define calving phenology and habitat use. GPS‐collars were deployed on 89 female moose over five years, including eight collars equipped with animal‐borne video and environmental data ...
Mikaela Borgeaud LeBlanc, Manuelle Landry‐Cuerrier, Vincent Brodeur, Murray M. Humphries   +3 more
wiley   +1 more source