Results 111 to 120 of about 261,975 (279)
Causes of Pneumonia Epizootics among Bighorn Sheep, Western United States, 2008–2010
Emerging Infectious Diseases, 2012 Epizootic pneumonia of bighorn sheep is a devastating disease of uncertain etiology. To help clarify the etiology, we used culture and culture-independent methods to compare the prevalence of the bacterial respiratory pathogens Mannheimia haemolytica ...
Thomas E. Besser +10 more
doaj +1 more source
Structural interpretations based on ERTS-1 imagery, Bighorn Region, Wyoming-Montana [PDF]
Structural analysis is being carried out on bands MSS 5 and 7 of scene 1085-17294. Geologic strucutre is primarily revealed in the topographic relief and drainage. Topographic linears are particularly well developed in the bighorn uplift.
Hoppin, R. A.
core +1 more source
Acute drought desiccates highly used habitat and drives herbivores into irrigated croplands
Ecological Applications, Volume 35, Issue 7, October 2025.Abstract In arid and semiarid regions, extreme, extended droughts are becoming more frequent due to climate change. Drought is driving wildlife to seek out food or water resources where they are not as limited, such as in irrigated croplands. We collected GPS locations from 41 mule deer, a generalist herbivore reliant on primary productivity, within ...
Martin Leclerc +6 more
wiley +1 more source
Demographic responses of bighorn sheep to recreational activities: A trial of a trail
Wildlife Society Bulletin, 2014 Long‐term effects of anthropogenic disturbance to wildlife, and whether such effects have population‐level consequences, often are difficult to determine.
Brett P. Wiedmann, Vernon C. Bleich
doaj +1 more source
, 2012 In this essay, Joe Wilkins shares stories of Montana inspired by its changing ...
Wilkins, Joe
core +1 more source
Ecology and Evolution, Volume 15, Issue 10, October 2025.We used direct observations, camera traps, and environmental DNA (eDNA) to identify secondary consumers of sap from wells created by red‐naped (S. nuchalis) and Williamson's (S. thyroideus) sapsuckers among three groups of shrubs and trees in south‐central Colorado, USA.
Rick Clawges +5 more
wiley +1 more source
Ecology and EvolutionThe reintroduction of wildlife can have significant ecological impacts by altering the flow of energy in food webs. Recently, plains bison were reintroduced to part of Banff National Park after a 150‐year absence. The large herbivore's reintroduction was
Peter J. Whyte +3 more
doaj +1 more source
Exotic deer in southern Latin America: what do we know about impacts on native deer and on ecosystems? [PDF]
, 2018 A recent review on exotic cervids concluded that deer introduced to Patagonia impacted habitat and native huemul deer Hippocamelus bisulcus. I evaluate these assertions and amend information about this South American case study.
Flueck, Werner
core
Long-term studies of bighorn sheep and mountain goats reveal fitness costs of reproduction.
Journal of Animal Ecology, 2019 Fitness costs of reproduction are expected when resources are limited. Costs drive the evolution of life-history strategies and can affect population dynamics if females change their allocation of resources to reproduction.
M. Festa‐Bianchet +3 more
semanticscholar +1 more source
EcosphereMycoplasma ovipneumoniae is a primary causative agent responsible for initiating polymicrobial pneumonia in bighorn sheep (Ovis canadensis). Infections of bighorn sheep populations are typically characterized by initial all‐age epizootics followed by ...
Colton J. Padilla +3 more
doaj +1 more source