Results 61 to 70 of about 6,899 (231)

Determining Timing of Births and Habitat Selection to Identify Lambing Period Habitat for Bighorn Sheep

open access: yesFrontiers in Ecology and Evolution, 2020
Timing of births in ungulates is influenced by ecological factors, and differences in seasonality of births have evolutionary implications for these mammals.
Rusty W. Robinson   +4 more
doaj   +1 more source

Dates for Ovis canadensis, Ovis cervina and Ovis montana

open access: yes, 1914
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Management considerations of moose life‐history characteristics in Colorado, USA

open access: yesWildlife Biology, EarlyView.
Wildlife management agencies are obliged to provide evidence‐based management recommendations to stakeholders. However, allocation of resources towards the management of species is rarely uniform. The consideration of life‐history characteristics of moose offers wildlife managers a more robust understanding of population ecology, while also providing ...
Eric J. Bergman   +3 more
wiley   +1 more source

A high‐altitude thermal infrared method for estimating moose abundance and demography in Rocky Mountain National Park, USA

open access: yesWildlife Biology, EarlyView.
Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley   +1 more source

Hunting regulations and movements of alpine reindeer

open access: yesWildlife Biology, EarlyView.
Most ungulate populations are regulated by hunting, and harvest rate is regulated through quotas and hunting season duration. Hunting is well known to affect behaviour of ungulates, but how annual variation in quotas and hunting season duration affects individual behaviour remains uncertain.
Atle Mysterud   +3 more
wiley   +1 more source

Evaluating patterns of plant phenological progression and pronghorn movement behaviors across diverse landscapes Évaluation des modèles de progression phénologique des plantes et des comportements de mouvement des antilopes d'Amérique dans divers paysages

open access: yesWildlife Monographs, EarlyView.
We found variable spatial and temporal patterns and predictability of plant phenological progression across 8 pronghorn ranges in Montana. We sampled potential exposure to phenology values for migrants and residents along spring movement paths and summer ranges and found that within herds and years the resident and migrant movement strategies conferred
Kelly M. Proffitt   +4 more
wiley   +1 more source

Indexing body condition of bighorn sheep: potential for concordance among independent investigators?

open access: yesWildlife Society Bulletin, 2023
Estimates of body condition or body composition are useful metrics, and consistency among results determined by independent investigators enhances their utility. If concordant, albeit subjective, assessments of body condition can be achieved by personnel
Vernon C. Bleich, Brett P. Wiedmann
doaj   +1 more source

Occasional Publications on Northern Life, No. 04 [PDF]

open access: yes, 1983
The need to exchange information on research in reindeer and caribou diseases became apparent to investigators attending the Second International Reindeer/Caribou Symposium in Roros, Norway, in 1979.
Dieterich, Robert A., Morton, Jamie K.
core  

Can edge AI mitigate environmental effects on camera trap performance?

open access: yesWildlife Society Bulletin, EarlyView.
A camera trap enabled with edge artificial intelligence (AI) mitigated the effects of increased air temperature on the probability of false positive detections, but at the cost of an increased probability of missed detections. Other environmental variables affected camera trap performance differently, suggesting the need to account for camera trap ...
Taylor L. Kaltenbach   +3 more
wiley   +1 more source

Reliability of tooth cementum rings to age bighorn sheep: a blind test

open access: yesCalifornia Fish and Wildlife Journal
Tooth cementum rings often have been considered the most reliable method for aging larger mammals. Tests of this approach have used samples of known ages, but to ensure objectivity this needs to be carried out as truly blind tests.
John D. Wehausen   +2 more
doaj   +1 more source

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