Results 61 to 70 of about 1,532 (172)

First recorded ice entrapment of a beluga whale (Delphinapterus leucas) in east Greenland

open access: yesPolar Research
Beluga whales are rare along the coast of east Greenland and the closest recognized stock occurs around Svalbard. Here we report on an ice entrapment of an adult beluga whale (Delphinapterus leucas) in north-east Greenland.
Kristin L. Laidre   +4 more
doaj   +1 more source

Threats to the World's Bears and Efforts to Conserve Them: Perspectives and Actions of IUCN Bear Specialist Group Members 世界熊类面临的威胁及其保护努力:IUCN熊类专家组成员的观点与行动

open access: yesIntegrative Conservation, Volume 5, Issue 2, Page 177-191, June 2026.
A survey of IUCN Bear Specialist Group (BSG) members revealed that habitat loss, degradation and fragmentation is the greatest threat to each of the 7 species of terrestrial bears. Poaching and human–bear conflicts are also high threats for some of these species.
David L. Garshelis   +3 more
wiley   +1 more source

Global Drivers of Morphological Variation in Grey Wolves

open access: yesDiversity and Distributions, Volume 32, Issue 6, June 2026.
ABSTRACT Aim To investigate the ecological and evolutionary drivers of morphological variation in grey wolves (Canis lupus) across their global range: Location The entire Holarctic distribution of grey wolves, from Greenland to New Mexico in North America, from Norway to Israel in Eurasia, including several samples from Russia and India.
Dominika Bujnáková   +18 more
wiley   +1 more source

The ecological and behavioral significance of short-term food caching in polar bears (Ursus maritimus)

open access: yesArctic Science, 2020
The paucity of observations of wild polar bears (Ursus maritimus) caching of food (including hoarding, i.e., burying and remaining with a kill for up to a few days) has led to the conclusion that such behavior does not occur or is negligible in this ...
Ian Stirling   +3 more
doaj   +1 more source

Morphology of the lingual papillae of the polar bear (Ursus maritimus).

open access: yesOkajimas folia anatomica Japonica, 2017
We examined the dorsal lingual surfaces of a newborn and an old polar bears by using scanning electron microscopy. In the newborn polar bear, the filiform papilla on the lingual apex was cylindrical in shape. The connective tissue core of the filiform papillae was needle-shaped and that of the fungiform papillae was funnel-shaped. The filiform papillae
EMURA, Shoichi   +2 more
openaire   +2 more sources

Historical Range Contraction and Extent of Harbour Porpoises (Phocoena phocoena) in the Baltic Sea Revealed by Archival Newspapers

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Archival Swedish newspapers from the 18th to 20th centuries reveal that the Baltic harbour porpoise once utilized the waters along the full Swedish coast, reaching far north into the Gulf of Bothnia, areas where it no longer occurs today. These records show a major range loss and highlight the importance of historical baselines for conservation ...
M. Aiken   +3 more
wiley   +1 more source

Element concentrations in tissues reveal spatial structure of Atlantic walrus management stocks

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
Differences in tissue element concentrations confirm geographic differentiation between 2 of Canada's walrus management stocks but reveal additional spatial structure within the largest stock that may have management implications. Abstract Ensuring harvested animal populations are managed at appropriate scales requires an understanding of underlying ...
Alexander M. Jardine   +3 more
wiley   +1 more source

Developing Multi-Level Institutions from Top-Down Ancestors

open access: yesInternational Journal of the Commons, 2007
The academic literature contains numerous examples of the failures of both top-down and bottom-up common pool resource management frameworks. Many authors agree that management regimes instead need to utilize a multi-level governance approach to meet ...
Martha Dowsley
doaj   +1 more source

Seroprevalence and Risk Analysis of Toxoplasma Gondii in Wild Birds of District Lahore Punjab, Pakistan

open access: yesVeterinary Medicine and Science, Volume 12, Issue 3, May 2026.
This study found that over 10% of wild birds in Lahore, Pakistan, carry antibodies for Toxoplasma gondii, a parasite that can cause serious illness in humans and animals. Birds like lapwings and silver bills showed especially high antibody rates. Improved monitoring is needed to better understand risk dynamics in Pakistan.
Shahzad Ali   +7 more
wiley   +1 more source

No need to replace an “anomalous” primate (Primates) with an “anomalous” bear (Carnivora, Ursidae)

open access: yesZooKeys, 2015
By means of mitochondrial 12S rRNA sequencing of putative “yeti”, “bigfoot”, and other “anomalous primate” hair samples, a recent study concluded that two samples, presented as from the Himalayas, do not belong to an “anomalous primate”, but to an ...
Eliécer Gutiérrez, Ronald H. Pine
doaj   +1 more source

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