Results 91 to 100 of about 7,621 (257)

A capture–recapture framework for combining biologging data with physical captures to decompose and estimate demographic rates: Simulations across life cycles and application to polar bears

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 2, Page 585-597, February 2026.
Abstract Estimating demographic rates of wild populations is critical to understanding their dynamics but can be challenging because large amounts of data are required, and parts of the life cycle of individuals may be unobserved. In numerous research programmes, capture–recapture (CR) data and biologging data are collected in parallel.
Marwan Naciri   +5 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

State-space models' dirty little secrets: even simple linear Gaussian models can have estimation problems [PDF]

open access: yes, 2016
State-space models (SSMs) are increasingly used in ecology to model time-series such as animal movement paths and population dynamics. This type of hierarchical model is often structured to account for two levels of variability: biological stochasticity ...
Albertsen, Christoffer M.   +6 more
core   +2 more sources

An integrated social–ecological–evolutionary–phenotypic (SEEP) approach to understanding animal responses to urbanization

open access: yesBiological Reviews, Volume 101, Issue 1, Page 419-436, February 2026.
ABSTRACT Humans play key roles in shaping the structure and processes of ecosystems globally, especially in cities. This recognition has prompted a recent focus on understanding urban systems via interactions between human social systems and ecological and evolutionary processes.
Kevin E. McCluney   +9 more
wiley   +1 more source

Indigenous peoples and local community reports of climate change impacts on biodiversity

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
Abstract Climate change impacts on biodiversity have been primarily studied through ecological research methods, largely ignoring other knowledge systems. Indigenous and local knowledge systems include rich observations of changes in biodiversity that can inform climate change adaptation planning and environmental stewardship.
Albert Cruz‐Gispert   +5 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

Efficacy of aerial forward-looking infrared surveys for detecting polar bear maternal dens.

open access: yesPLoS ONE, 2020
Denned polar bears (Ursus maritimus) are invisible under the snow, therefore winter-time petroleum exploration and development activities in northern Alaska have potential to disturb maternal polar bears and their cubs.
Tom S Smith   +3 more
doaj   +1 more source

Plasticity in foraging behaviour as a possible response to climate change [PDF]

open access: yes, 2017
published_or_final_versio
Evans, MR, Moustakas, A
core   +1 more source

Portable Electric Fencing for Bear Deterrence and Conservation

open access: yesHuman-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   +3 more
doaj   +1 more source

Den Collapse Kills Female Polar Bear and Two Newborn Cubs [PDF]

open access: yes, 1991
A female polar bear (Ursus maritimus) and two newborn cubs were found dead at their den site on the Yukon coast. The site investigation and necropsy indicated that den collapse was the cause of death.Key words: polar bear, Ursus maritimus, den collapse ...
Clarkson, Peter L., Irish, Doug
core   +2 more sources

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