Results 131 to 140 of about 7,621 (257)

Possible Effects of Climate Warming on Selected Populations of Polar Bears (Ursus maritimus) in the Canadian Arctic [PDF]

open access: yes
Polar bears are dependent on sea ice for survival. Climate warming in the Arctic has caused significant declines in coverage and thickness of sea ice in the polar basin and progressively earlier breakup in some areas.
Parkinson, Claire L., Stirling Ian
core   +1 more source

A morphometric characterization of cranial shape in terrestrial carnivorans based on fourier analysis [PDF]

open access: yes, 2013
A number of studies have shown that skull morphology reflects the ecological adaptations of terrestrial carnivores as well as their phylogenetic legacy.
Figueirido, Borja   +4 more
core  

Space‐use strategies drive diet composition of Baffin Bay polar bears

open access: yesEcosphere
Polar bears (Ursus maritimus) depend on sea ice to hunt their ice‐associated prey. However, climate‐induced sea ice loss is leading to changes in space‐use strategies of polar bears, with bears in some subpopulations spending more time on land or ...
Jennifer H. Stern   +4 more
doaj   +1 more source

Un mundo diferente: las cuevas de osos. El caso de la cueva ce Amutxate (Aralar, Navarra) [PDF]

open access: yes, 2010
Las campañas de excavación en la cueva de Amutxate en las que todo el sedimento fue lavado y cribado han permitido estudiar los aspecto taxonómicos de una típica acumulación de resto de oso de las cavernas.
Cobo, R.   +4 more
core   +1 more source

El problema del concepto de especie en la filogenia del Oso de las Cavernas [PDF]

open access: yes, 2001
[Abstract] This a short review of a series of concepts daily used in palaentology, trying to connect them with their meaning in other fields of study in Biology. Firstly, it should be pointed out if the concept of species comes from an empiric reality or
Grandal-d'Anglade, Aurora, Vila, Marta
core   +2 more sources

The slowest fish: swim speed and tailbeat frequency of Greenland sharks [PDF]

open access: yes, 2016
第3回極域科学シンポジウム/第34回極域生物シンポジウム 11月26日(月) 国立極地研究所 ...
Aaron Fisk   +7 more
core   +1 more source

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