Results 51 to 60 of about 4,366 (194)

Environmental DNA metabarcoding reveals biodiversity recovery in tropical forest restoration across multiple landscapes

open access: yesEcosphere, Volume 17, Issue 7, July 2026.
Abstract Forest ecosystems have been degraded globally and restoration efforts aim to reverse loss of biodiversity and ecosystem function decline including carbon storage from the atmosphere. Assessments of restoration success predominantly emphasize increasing carbon stocks rather than species recovery.
Monika Goralczyk   +7 more
wiley   +1 more source

Was the giant short-faced bear a hyper-scavenger? A new approach to the dietary study of ursids using dental microwear textures.

open access: yesPLoS ONE, 2013
Dramatic environmental changes associated with global cooling since the late Miocene, and the onset of glacial-interglacial cycles in the Pleistocene served as a backdrop to the evolutionary radiation of modern bears (family Ursidae). These environmental
Shelly L Donohue   +3 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

Range fragmentation in the spectacled bear Tremarctos ornatus in the northern Andes [PDF]

open access: yesOryx, 2004
This paper addresses the conservation status of the spectacled bear Tremarctos ornatus in the northern Andes (Venezuela, Colombia and Ecuador) by analysing the degree of range fragmentation and estimating habitat availability. From satellite images we constructed maps of remnant habitat blocks, consisting of Andean forest and páramo (high elevation ...
Gustavo Kattan   +7 more
openaire   +1 more source

Dietary ecology of the extinct cave bear: Evidence of omnivory as inferred from dental microwear textures [PDF]

open access: yesActa Palaeontologica Polonica, 2016
The diet of the extinct European cave bear, Ursus spelaeus, has widely been debated. Diverging from the extant brown bear (Ursus arctos) approximately 1.2 million years ago, the cave bear is one of the most ubiquitous fossil bears occurring in Europe ...
D. Brent Jones, Larisa R.G. DeSantis
doaj   +1 more source

An Ecological Modelling Approach to Support Peru Wildlife Conservation Planning Based on Geospatial Datasets and Remote Sensing Information

open access: yesDiversity and Distributions, Volume 32, Issue 5, May 2026.
ABSTRACT Aim Peru, a megadiverse country, has developed conservation plans for some threatened wildlife species. This study produced spatially explicit data integrating Species Distribution Models (SDMs) into a geospatial analysis of connectivity within the protected areas (PAs) network.
Alexander Cotrina‐Sanchez   +4 more
wiley   +1 more source

Estimación de la masa corporal de las especies de osos fósiles y actuales (Ursidae, Tremarctinae) de América del Sur Body mass estimation of extinct and extant South American bears (Ursidae, Tremarctinae)

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2009
Contar con estimaciones precisas de la masa corporal de los taxones fósiles es esencial para realizar reconstrucciones paleobiológicas. Empleando relaciones demostradas entre la masa corporal y medidas anatómicas en mamíferos modernos algunos autores han
Leopoldo Héctor Soibelzon   +1 more
doaj  

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

open access: yesBoreas, Volume 55, Issue 2, Page 443-453, April 2026.
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

Tarsal ligaments of the spectacled bear, Tremarctos ornatus

open access: yes, 1958
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

Registros de ocurrencia del oso andino (Tremarctos ornatus Cuvier, 1825) en sus límites de distribución nororiental y austral Occurrence of the Andean bear (Tremarctos ornatus Cuvier, 1825) in its north eastern and southern limit of distribution.

open access: yesRevista del Museo Argentino de Ciencias Naturales, 2011
El conocimiento de la distribución del oso andino (Tremarctos ornatus), es fundamental para evaluar el estado de conservación de la especie y el desarrollo de medidas de conservación tales como la declaración de nuevas áreas protegidas o la ...
J. Fernando Del Moral Sachetti   +1 more
doaj  

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