Results 41 to 50 of about 2,239 (165)
Long-term demography of a reintroduced population of endangered falcons
Global Ecology and Conservation, 2022 We examined long-term demography of an endangered subspecies, the Northern Aplomado Falcon (Falco femoralis septentrionalis), in South Texas, USA. The population has been managed and monitored since reintroductions began in 1993.
Brian W. Rolek +10 more
doaj +1 more source
Age-Specific Survival Estimation of a Eurasian Crane Population Highlights a Long-Term Decline in Juvenile Survival. [PDF]
Ecol EvolThe Eurasian crane (Grus grus), a symbol of conservation success in Europe, has made an impressive recovery. However, our results show that over the study period, juvenile survival declined by almost 30% overall, while sub‐adults experienced a smaller decrease, and adults showed no change.
Gicquel M +22 more
europepmc +2 more sources
Annual survival estimation of migratory songbirds confounded by incomplete breeding site-fidelity: study designs that may help [PDF]
Animal Biodiversity and Conservation, 2004 Many species of bird exhibit varying degrees of site–fidelity to the previous year’s territory or breeding area, a phenomenon we refer to as incomplete breeding site–fidelity. If the territory they occupy is located beyond the bounds of the study area or
Marshall, M. R. +3 more
doaj
Age‐ and sex‐specific survival of the Gunnison's prairie dog (Cynomys gunnisoni)
Ecosphere, 2022 Age‐ and sex‐specific survival rates are essential for understanding animal population dynamics and discerning environmental influences on population parameters.
Rashidah H. Farid +2 more
doaj +1 more source
Cryptic disease-induced mortality may cause host extinction in an apparently stable host- parasite system [PDF]
, 2017 The decline of wildlife populations due to emerging infectious disease often shows a common pattern: the parasite invades a naive host population, producing epidemic disease and a population decline, sometimes with extirpation.
Costas, F +5 more
core +1 more source
Covariantes continuas individuales dependientes del tiempo y el modelo de Cormack–Jolly–Seber [PDF]
, 2004 The Cormack–Jolly–Seber model provides the basic framework for analyzing the survival of animals in open populations using capture–recapture data. Extensions of this model have already been developed that allow the survival and capture probabilities to ...
Bonner, S. J., Schwarz, C. J.
core
Wildlife Biology, EarlyView.Little is known about what happens to juvenile birds after one or both of their parents are harvested by hunters during the post‐fledging dependency period. Here, we compare the fate of juvenile Canada geese Branta canadensis that lost ≥ 1 parent to hunters (orphans) during this period to other juveniles that retained both parents (non‐orphans). For 25
Michael R. Conover, Lauren J. Head
wiley +1 more source
Apparent annual survival of staging ruffs during a period of population decline: insights from sex and site-use related differences [PDF]
, 2015 The ruff Philomachus pugnax, a lekkingshorebird wintering in Africa and breeding across northernEurasia, declined severely in its western range. Based on acapture-mark-resighting programme (2004–2011) in thewesternmost staging area in Friesland (the ...
Hooijmeijer, J.C.E.W. +5 more
core +1 more source
Wildlife Society Bulletin, EarlyView.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
BirdsBird survival is influenced by both natural and anthropogenic factors, including weather conditions and oil spills. In this study, we examined the impact of a major oil spill (Prestige oil tanker) and climatic conditions (precipitation and wind) on ...
Andrea Gestoso +5 more
doaj +1 more source