Results 61 to 70 of about 13,875,303 (177)

Counter‐factual simulation highlights requirements for additional management to avert extinction of a relict Tītī/Sooty Shearwater population

open access: yesIbis, Volume 168, Issue 4, Page 1348-1363, October 2026.
Seabirds play key ecological roles but face increasing threats worldwide. Among them, Tītī (Sooty Shearwater) Ardenna grisea are among the most abundant and culturally significant species in the Southern Hemisphere but are also threatened. Kapiti Island, Aotearoa (New Zealand), holds a Tītī colony which, despite eradication of non‐native mammalian ...
Etienne Ossona De Mendez   +7 more
wiley   +1 more source

Age‐specific survival of reintroduced swift fox in Badlands National Park and surrounding lands

open access: yesWildlife Society Bulletin, 2016
In 2003, a reintroduction program was initiated at Badlands National Park (BNP), South Dakota, USA, with swift foxes (Vulpes velox) translocated from Colorado and Wyoming, USA, as part of a restoration effort to recover declining swift fox populations ...
Indrani Sasmal   +3 more
doaj   +1 more source

Dinâmica da frota de veículos que estacionam no centro de Lavras, MG Dynamics of the convoy of vehicles parking at Lavras, MG city center

open access: yesCiência e Agrotecnologia, 2004
Ensaios de captura-recaptura constituem técnica amostral comumente utilizada para estimar o tamanho e outros componentes da dinâmica de uma população.
José Otaviano de Oliveira   +1 more
doaj   +1 more source

First Direct Evidence for Natal Wintering Ground Fidelity and Estimate of Juvenile Survival in the New Zealand Southern Right Whale Eubalaena australis. [PDF]

open access: yesPLoS ONE, 2016
Juvenile survival and recruitment can be more sensitive to environmental, ecological and anthropogenic factors than adult survival, influencing population-level processes like recruitment and growth rate in long-lived, iteroparous species such as ...
E L Carroll   +5 more
doaj   +1 more source

Estimating long-term trends in abundance and survival for nesting flatback turtles in Kakadu National Park, Australia

open access: yesEndangered Species Research, 2017
Flatback turtles Natator depressus are endemic to Australia and Papua New Guineaís tropical oceans and, although the species has an extensive distribution around northern Australia, there are few published long-term abundance trends of nesting ...
Groom, RA, Griffiths, AD, Chaloupka, M
doaj   +1 more source

Survival and abundance of polar bears in Alaska’s Beaufort Sea, 2001–2016

open access: yesEcology and Evolution, 2021
The Arctic Ocean is undergoing rapid transformation toward a seasonally ice‐free ecosystem. As ice‐adapted apex predators, polar bears (Ursus maritimus) are challenged to cope with ongoing habitat degradation and changes in their prey base driven by food‐
Jeffrey F. Bromaghin   +4 more
doaj   +1 more source

High and minimally variable adult marine survival among multiple stocks of Chinook salmon

open access: yesEcosphere, Volume 17, Issue 9, September 2026.
Abstract Estimates of individual survival across space and time provide critical information on processes that regulate population abundance. Here, we use state‐space models fit to data from more than 500 acoustically tagged Chinook salmon to better understand the factors that shape survival during the final summer and fall of marine residence—a life ...
Cameron Freshwater   +6 more
wiley   +1 more source

Status and population dynamics of the Critically Endangered Valcheta frog Pleurodema somuncurense on the Patagonian Somuncura Plateau

open access: yesEndangered Species Research, 2019
Amphibian populations are declining globally. In this scenario, detailed information on their ecology is crucial to determine the status and extinction risk of their populations and, therefore, better plan conservation activities.
MA Velasco   +7 more
doaj   +1 more source

Age‐specific, population‐level pedigree of wild black bears provides insights into reproduction, paternity, and maternal effects on offspring apparent survival

open access: yesEcology and Evolution, 2022
Wildlife pedigrees provide insights into ecological and evolutionary processes. DNA obtained from noninvasively collected hair is often used to determine individual identities for pedigrees and other genetic analyses.
Melissa J. Reynolds‐Hogland   +5 more
doaj   +1 more source

Drone‐based radiotelemetry and imagery systems provide an advantage over traditional techniques for estimating survival of dependent juveniles

open access: yesWildlife Society Bulletin, Volume 50, Issue 3, September 2026.
We used drone‐based radiotelemetry and multispectral imagery to estimate detection and survival probabilities of blue‐winged teal broods in Saskatchewan, Canada. Weekly brood survival probabilities, estimated via Cormack‐Jolly‐Seber models, increased with age and were comparable between drone methods.
Grant A. Rhodes   +5 more
wiley   +1 more source

Home - About - Disclaimer - Privacy