Results 11 to 20 of about 117,676 (223)

Histomorphologic and Immunohistochemical Characterization of a Cardiac Purkinjeoma in a Bearded Seal (Erignathus barbatus) [PDF]

open access: yesCase Reports in Veterinary Medicine, 2014
The most common cardiac tumors of heart muscle are rhabdomyomas, solitary or multiple benign tumors of striated muscle origin. While cardiac rhabdomyomas are well described in human medical literature, limited information depicting the occurrence of ...
G. Krafsur   +8 more
doaj   +2 more sources

Design and performance analysis of a novel face gas seal [PDF]

open access: yes, 2006
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The scope of this work carried two objectives, each focusing on theoretical model development, performance prediction and experimental evaluation of two ...
Roberts-Haritonov, Lev
core   +7 more sources

Habitat selection and seasonal movements of young bearded seals (Erignathus barbatus) in the Bering Sea. [PDF]

open access: yesPLoS ONE, 2018
The first year of life is typically the most critical to a pinniped's survival, especially for Arctic phocids which are weaned at only a few weeks of age and left to locate and capture prey on their own. Their seasonal movements and habitat selection are
Michael F Cameron   +6 more
doaj   +1 more source

Fatty acid‐based diet estimates suggest ringed seal remain the main prey of southern Beaufort Sea polar bears despite recent use of onshore food resources

open access: yesEcology and Evolution, 2020
Polar bears (Ursus maritimus) from the southern Beaufort Sea (SB) subpopulation have traditionally fed predominantly upon ice‐seals; however, as the proportion of the subpopulation using onshore habitat has recently increased, foraging on land‐based ...
Jennifer Bourque   +4 more
doaj   +1 more source

Ice-generated sound and its potential masking effects on bearded seal vocalizations in the western Canadian Arctic [PDF]

open access: yesJASA Express Letters
Quantifying acoustic masking due to noise sources is an important part of marine mammal conservation. This study examines the relative masking of bearded seal vocalizations by ice-generated sounds, using passive acoustic data collected from the western ...
Najeem Shajahan   +7 more
doaj   +1 more source

Age and sex composition of seals killed by polar bears in the eastern Beaufort Sea. [PDF]

open access: yesPLoS ONE, 2012
Polar bears (Ursus maritimus) of the Beaufort Sea enter hyperphagia in spring and gain fat reserves to survive periods of low prey availability. We collected information on seals killed by polar bears (n=650) and hunting attempts on ringed seal (Pusa ...
Nicholas W Pilfold   +4 more
doaj   +1 more source

Intraspecific and temporal variability in the diet composition of female polar bears in a seasonal sea ice regime

open access: yesArctic Science, 2017
Predator foraging behaviour is influenced by a suite of intrinsic and extrinsic factors, including energetic requirements, resource availability, and habitat conditions.
Luana Sciullo   +3 more
doaj   +1 more source

The commercial harvest of ice-associated seals in the Sea of Okhotsk, 1972-1994.

open access: yesPLoS ONE, 2017
Sealing log books from 75 out of 79 commercial harvest cruises carried out between 1972 and 1994 in the Sea of Okhotsk, Russia, were analyzed to describe spatial and temporal allocation of ice-associated seal harvest effort, species composition of ...
Irina S Trukhanova   +5 more
doaj   +1 more source

Developing Theoretical Marine Habitat Suitability Models from Remotely-Sensed Data and Traditional Ecological Knowledge

open access: yesRemote Sensing, 2015
There is a lack of information regarding critical habitats for many marine species, including the bearded seal, an important subsistence species for the indigenous residents of Arctic regions.
Patrick M. Olsen   +2 more
doaj   +1 more source

Thin ice, deep snow and surface flooding in Kotzebue Sound: landfast ice mass balance during two anomalously warm winters and implications for marine mammals and subsistence hunting

open access: yesJournal of Glaciology, 2021
The inaugural data from the first systematic program of sea-ice observations in Kotzebue Sound, Alaska, in 2018 coincided with the first winter in living memory when the Sound was not choked with ice.
Andrew R. Mahoney   +13 more
doaj   +1 more source

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