Results 51 to 60 of about 1,182 (123)

Exploring dietary adaptations in Ursus minimus: a 3D geometric morphometric analysis of the mandible

Boreas, EarlyView.
Using 3D geometric morphometrics, the dietary adaptations of the extinct Auvergne bear (Ursus minimus) are analysed. Its mandibular morphology aligns more closely with omnivorous rather than insectivorous bears, challenging current ideas. The extinct bear Ursus minimus, which lived in Europe during the Pliocene and possibly Early Pleistocene, is ...
Anneke H. van Heteren
wiley   +1 more source

Black bear density in Glacier National Park, Montana

Wildlife Society Bulletin, 2014
We report the first abundance and density estimates for American black bears (Ursus americanus) in Glacier National Park (NP), Montana, USA. We used data from 2 independent and concurrent noninvasive genetic sampling methods—hair traps and bear rubs ...
Jeff B. Stetz, Katherine C. Kendall, Amy C. Macleod   +2 more
doaj   +1 more source

Fossil bears break free from inhibitory cascade constraints at least twice (Ursus minimus and Ursus deningeri) caused by dietary adaptations

Boreas, EarlyView.
Bears deviate from the inhibitory cascade model (ICM) during molar size evolution, with two significant deviations linked to changes in diet: Ursus minimus and Ursus deningeri. Many bears exhibit a ‘partial ICM’, highlighting the relationship between relative molar size, dietary adaptations and dental development across different species.
Anneke H. van Heteren, A. Stefanie Luft
wiley   +1 more source

Role of badger setts in life of other carnivores

Studia Ecologiae et Bioethicae, 2015
A study of interspecific interactions of European (Meles meles) and Asian (M. leucurus) badgers with other carnivores at badger setts was carried out in Darwin Reserve (European part  of Russia) and in Ussuriisk Reserve (Russian Far East) in 2006-2011 ...
Natalia V. Sidorchuk , Michail V. Maslov , Vyacheslav V. Rozhnov   +2 more
doaj   +1 more source

Where leopards die: identifying mortality hotspots in northern Pakistan

Conservation Science and Practice, EarlyView.
The relevance of this work to conservation policy and practice is twofold. First, it offers concrete spatial insights that can directly inform the design of targeted mitigation strategies and proactive interventions. Second, it highlights the limitations of current protected area networks and underscores the urgent need to incorporate human‐dominated ...
Muhammad Kabir, Faizan Ahmad, Luciano Bosso, Muhammad Rehan, Asma Ul Husna, Muhammad Raqeeb   +5 more
wiley   +1 more source

The Abrupt and Persistent Decline in Recruitment Success in Northeast Arctic Cod: A Review of Probable Causes

Fish and Fisheries, EarlyView.
ABSTRACT Most of the previously large cod stocks in the North Atlantic are depleted to very low levels. A notable exception has been the Northeast Arctic cod inhabiting the Barents Sea. This cod stock reached a record high level around 2013, but since then has declined sharply, with older fish being fished out and few new recruits entering the stock ...
Edda Johannesen, Geir Ottersen, Florian Berg, Bjarte Bogstad, Padmini Dalpadado, Côme Denechaud, Elena Eriksen, Maria Fossheim, Håvard Guldbrandsen Frøysa, Torild Johansen, Knut Korsbrekke, Even Moland, Esben Moland Olsen, Anne Britt Sandø, Georg Skaret, Morten Skogen, Frode Vikebø   +16 more
wiley   +1 more source

Variation in energetic balance among free-ranging polar bears during the spring mating and foraging season

Arctic Science
Large carnivores are capable of consuming substantial biomasses that can significantly alter their body mass and condition over short periods. Here we examine the intra-seasonal variation of polar bear (Ursus maritimus Phipps, 1774) body mass, energy ...
Anthony M. Pagano, Stephen N. Atkinson, Louise C. Archer   +2 more
doaj   +1 more source

Landscape Structure and Species Interactions Drive the Distribution of Salmon Carcasses in Coastal Watersheds

Frontiers in Ecology and Evolution, 2019
The disproportionate effects of some species can drive ecosystem processes and shape communities. This study investigates how distributions of spawning Pacific salmon within streams, salmon consumers, and the surrounding landscape mediate the ...
Joel M. S. Harding, Joel M. S. Harding, Jennifer N. Harding, Jennifer N. Harding, Rachel D. Field, Rachel D. Field, Jane E. Pendray, Noel R. Swain, Marlene A. Wagner, Marlene A. Wagner, John D. Reynolds, John D. Reynolds   +11 more
doaj   +1 more source

Plasticity in the reproductive biology of Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake following lake trout Salvelinus namaycush invasion

Journal of Fish Biology, EarlyView.
Abstract Yellowstone cutthroat trout Oncorhynchus virginalis bouvieri in Yellowstone Lake are the focus of intensive conservation efforts due to the threat of predation by invasive lake trout Salvelinus namaycush. Suppression gillnetting has reduced the abundance of predatory lake trout, and the Yellowstone cutthroat trout population is recovering ...
Michelle A. Briggs, Molly A. H. Webb, Christopher S. Guy, Todd M. Koel   +3 more
wiley   +1 more source

Using tri-axial accelerometers to identify wild polar bear behaviors

Endangered Species Research, 2017
Tri-axial accelerometers have been used to remotely identify the behaviors of a wide range of taxa. Assigning behaviors to accelerometer data often involves the use of captive animals or surrogate species, as their accelerometer signatures are generally ...
Pagano, AM, Rode, KD, Cutting, A, Owen, MA, Jensen, S, Ware, JV, Robbins, CT, Durner, GM, Atwood, TC, Obbard, ME, Middel, KR, Thiemann, GW, Williams, TM   +12 more
doaj   +1 more source