Results 71 to 80 of about 15,567 (163)

Dental Calculus Formation Is Linked to Diet and Phylogeny in Mammals

Ecology and Evolution, Volume 16, Issue 7, July 2026.
In a survey of > 1600 specimens across all mammalian orders, we found that most species present dental calculus. We found calculus production to be strongly associated with herbivory, and we provide recommendations for the use of dental calculus in collections‐based research. ABSTRACT The oral microbiome is implicated in a wide diversity of fundamental
John L. Richards, Markella Moraitou, Ella Nates, Konstantina Saliari, Emmanuel Gilissen, Zena Timmons, Andrew C. Kitchener, Olivier S. G. Pauwels, Richard Sabin, Phaedra Kokkini, Roberto Portela Miguez, Katerina Guschanski   +11 more
wiley   +1 more source

Revisiting the status of the Arctic's Last Ice Area as a refuge for marine predators

Ecosphere, Volume 17, Issue 7, July 2026.
Abstract The Last Ice Area (LIA), located north of the Canadian Arctic Archipelago and Greenland, has the Arctic's oldest and thickest sea ice. The LIA is hypothesized to be a potential climate refuge for ice‐dependent top predators as Arctic sea ice continues to decline.
Kristin L. Laidre, Axel Schweiger, Jinlun Zhang, Benjamin Cohen, Michael Steele, Steven H. Ferguson, G. W. K. Moore   +6 more
wiley   +1 more source

Ursus maritimus

, 2018
Ursus maritimus or polar bear den opening near the Alaska ...
USFWS
core  

Ways of Seeing Polar Bears in Fantasy Films, Fiction and Folklore

Traditiones
The polar bear (Ursus maritimus) has had many archetypal functions throughout time and across cultures and has been a key character within traditional tales and mythologies across the Arctic regions.
Lizanne Henderson
doaj   +1 more source

Expanding the Ecological Application of Invertebrate‐Derived DNA (iDNA) for Monitoring Terrestrial Mammals Using a Single‐Species Approach

Environmental DNA, Volume 8, Issue 4, July‐August 2026.
A novel single‐species, invertebrate‐derived eDNA (iDNA) method is presented for identifying European Brown Bear presence. Fly‐borne bear DNA remains readily identifiable for 24 h within flies and can be detected when just one fly in 20 has fed on bear scat. The method is effective both in laboratory and field settings. ABSTRACT Successful conservation
Angeliki Savvantoglou, Laura Weldon, Buffy Smith, Mark D. Steer   +3 more
wiley   +1 more source

A Case of Offspring Adoption in Free-Ranging Polar Bears (Ursus maritimus) [PDF]

, 1995
. During a study of the reproductive ecology of polar bears (Ursus maritimus) in western Hudson Bay (Canada), we documented a case of litter adoption. In an eight-month period, a ten-year-old adult female lost a litter of two cubs-of-the-year and adopted
M. R. L. Cattet, Atkinson, S.N., S. N. Atkinson, S. C. Polischuk, M. A. Ramsay, Cattet, M.R.L., Polischuk, S.C., Ramsay, M.A.   +7 more
core  

Canadian polar bear population structure using genome‐wide markers

Ecology and Evolution, 2020
Predicting the consequences of environmental changes, including human‐mediated climate change on species, requires that we quantify range‐wide patterns of genetic diversity and identify the ecological, environmental, and historical factors that have ...
Evelyn L. Jensen, Christina Tschritter, Peter V. C. deGroot, Kristen M. Hayward, Marsha Branigan, Markus Dyck, Rute B. G. Clemente‐Carvalho, Stephen C. Lougheed   +7 more
doaj   +1 more source

Consumption of anthropogenic foods influences the nutritional and reproductive condition of hunter‐harvested black bears

Wildlife Biology, Volume 2026, Issue 4, July 2026.
The consumption of human food subsidies influences ecological processes, and can affect individual behavior and fitness with population level changes in abundance and distribution. American black bears Ursus americanus often consume human food subsidies, which have been correlated with increased bear body size, age‐specific fertility and mortality ...
Isabel I. Field, Jonathan N. Pauli, David M. MacFarland, Jennifer L. Price Tack, Matthew M. Smith   +4 more
wiley   +1 more source

Developing Multi-Level Institutions from Top-Down Ancestors

International 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

Portable Electric Fencing for Bear Deterrence and Conservation

Human-Wildlife Interactions, 2018
Although bear-inflicted (Ursus spp.) human fatalities are rare in North America, human injuries, property damage, and bear mortalities occur wherever bears and humans commingle.
Tom S. Smith, Bryan Hopkins, John Gookin, Samantha Thompson   +3 more
doaj   +1 more source