Results 1 to 10 of about 431 (135)

Ecological, evolutionary and social constraints on reproductive effort: are hoary marmots really biennial breeders? [PDF]

open access: yesPLoS ONE, 2015
Biennial breeding is a rare life-history trait observed in animal species living in harsh, unproductive environments. This reproductive pattern is thought to occur in 10 of 14 species in the genus Marmota, making marmots useful model organisms for ...
Vijay P Patil   +2 more
doaj   +10 more sources

Additional Complexity in Historic and Contemporary Gene Flow Among Hoary, Vancouver Island, and Olympic Marmots Revealed by Microsatellites and Ultraconserved Elements [PDF]

open access: yesEcology and Evolution
Alpine species are inordinately threatened by habitat loss and precipitation changes resulting from climate change. In North America's Pacific Northwest (PNW), three closely related alpine mammal species—hoary, Olympic, and Vancouver Island marmots—may ...
Natalie M. Hamilton   +4 more
doaj   +5 more sources

Freezing in a warming climate: Marked declines of a subnivean hibernator after a snow drought [PDF]

open access: yesEcology and Evolution, 2021
Recent snow droughts associated with unusually warm winters are predicted to increase in frequency and affect species dependent upon snowpack for winter survival.
Aaron N. Johnston   +3 more
doaj   +2 more sources

Comparative phylogeography highlights the double-edged sword of climate change faced by arctic- and alpine-adapted mammals. [PDF]

open access: yesPLoS ONE, 2015
Recent studies suggest that alpine and arctic organisms may have distinctly different phylogeographic histories from temperate or tropical taxa, with recent range contraction into interglacial refugia as opposed to post-glacial expansion out of refugia ...
Hayley C Lanier   +4 more
doaj   +2 more sources

Fecal Pellet Counts as a Technique for Monitoring an Alpine-Dwelling Social Rodent, the Hoary Marmot ( Marmota caligata ) [PDF]

open access: yesArctic, Antarctic, and Alpine Research, 2004
We evaluated fecal pellet counts as an index of hoary marmot (Marmota caligata) social group size in order to develop a simple, inexpensive method for monitoring population change of a widely distributed, but poorly studied alpine mammal. Fecal pellet counts were conducted in three separate seasons along several 2 in X 100 in transects located parallel
Karels, T. J., Koppel, L., Hik, D. S.
openaire   +5 more sources

Complex history of isolation and gene flow in hoary, Olympic, and endangered Vancouver Island marmots [PDF]

open access: yesJournal of Mammalogy, 2015
AbstractClimate change resulting in a reduction of alpine habitat is believed to pose a considerable risk to alpine-dependent species, including many marmots. Hoary marmots (Marmota caligata) range throughout much of the mountainous Pacific Northwest (PNW) and Rocky Mountains while the closely related Olympic and Vancouver Island marmots (M.
Nicholas J. Kerhoulas   +2 more
openaire   +3 more sources

Habitat characteristics of the hoary marmot: assessing distribution limitations in Montana [PDF]

open access: yesEcosphere, 2017
AbstractSpecies that live in ecosystems with extremely different seasonal conditions must balance the constraints of each season to survive. Alpine species that do not migrate seasonally are especially adept at balancing the constraints created by short growing seasons and long, harsh winters.
B. Y. Turnock   +3 more
openaire   +3 more sources

Dental Pathology of the Hoary Marmot (Marmota caligata), Groundhog (Marmota monax) and Alaska Marmot (Marmota broweri) [PDF]

open access: yesJournal of Comparative Pathology, 2017
Museum specimens (maxillae and mandibles) of the three marmot species occurring in Alaska (Marmota caligata [n = 108 specimens], Marmota monax [n = 30] and Marmota broweri [n = 24]) were examined macroscopically according to predefined criteria. There were 71 specimens (43.8%) from female animals, 69 (42.6%) from male animals and 22 (13.6%) from ...
J.N. Winer   +4 more
openaire   +4 more sources

Stenochlaena palustris aqueous extract reduces hepatic peroxidative stress in Marmota caligata with induced fever

open access: yesUniversa Medicina, 2016
The kelakai fern (Stenochlaena palustris) contains bioactive substances, such as flavonoids, steroids, and alkaloids. The kelakai is used by the Kenyah Dayak communities for the treatment of anemia, fever, and cutaneous disorders.
Adenan Adenan, Eko Suhartono
doaj   +1 more source

Stenochlaena palustris aqueous extract reduces hepatic peroxidative stress in Marmota caligata with induced fever [PDF]

open access: yesUniversa Medicina, 2010
The kelakai fern (Stenochlaena palustris) contains bioactive substances, such as flavonoids, steroids, and alkaloids. The kelakai is used by the Kenyah Dayak communities for the treatment of anemia, fever, and cutaneous disorders.
Adenan, Eko Suhartono
doaj  

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