Results 91 to 100 of about 3,675 (193)

Annual survival estimation of migratory songbirds confounded by incomplete breeding site-fidelity: study designs that may help [PDF]

open access: yesAnimal 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  

A conversation with Richard M. Cormack [PDF]

open access: yes, 2016
Richard Melville Cormack is one of the giants who developed the theory of mark-recapture. Referring to his key paper in 1964, and the papers published back-to-back in 1965 by George Jolly and George Seber, the `Cormack-Jolly-Seber model' is central to ...
Buckland, Stephen Terrence
core   +1 more source

Anthropogenic and Environmental Factors Influence Kentish Plover (Anarhynchus alexandrinus) Survival in a Conservation-Reliant Coastal Population

open access: yesBirds
Bird 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

Demography of Microtus pennsylvanicus in Southern Ontario: enumeration versus Jolly–Seber estimation compared [PDF]

open access: yesCanadian Journal of Zoology, 1985
A meadow vole population near Toronto went through a cycle in numbers from July 1978 to May 1982. The population never reached a density less than 96 voles/ha or greater than 630 voles/ha. Jolly–Seber estimates differed from total enumeration counts by an average of 10.6% in population size and by less than 0.03 per 2 weeks in survival rates for ...
openaire   +1 more source

Contrasting abundance and residency patterns of two sympatric populations of transient killer whales (Orcinus orca) in the northern Gulf of Alaska [PDF]

open access: yes, 2012
Two sympatric populations of “transient” (mammal-eating) killer whales were photo-identified over 27 years (1984–2010) in Prince William Sound and Kenai Fjords, coastal waters of the northern Gulf of Alaska (GOA).
Andrews, Russel D.   +6 more
core  

Changing balance between survival and recruitment explains population trends in Red Knots Calidris canutus islandica wintering in Britain, 1969-1995 [PDF]

open access: yes, 2001
The demography of Red Knots Calidris canutus islandica wintering in Britain from 1969 to 1995 was examined using published data on winter numbers, unpublished ringing data, and information on the percentages first year birds in late autumn and winter ...
Boyd, H., Piersma, T.
core   +1 more source

Gomphus Nieuwsbrief Jaargang 2 — Nr. 1 (2008) [PDF]

open access: yes, 2008
* Populatieschattingen van waterjuffers in het Hannecartbos. * Het libellenjaar 2006 in Vlaanderen * Verslag van de startdag in Leuven * Excursiekalender 2008 * Telemetrie bij Libellen * Nederlandse namen van alle Europese soorten ...
Libellenvereniging Vlaanderen
core   +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

Methodological advances [PDF]

open access: yes, 2004
The study of population dynamics has long depended on methodological progress. Among many striking examples, continuous time models for populations structured in age (Sharpe & Lotka, 1911) were made possible by progress in the mathematics of integral ...
Lebreton, J.-D., Pollock, K. H.
core  

Incorporating telemetry information into capture‐recapture analyses improves precision and accuracy of abundance estimates given spatiotemporally biased recapture effort

open access: yesMethods in Ecology and Evolution
Natural populations that are rare, cryptic or inaccessible provide a monumental challenge to monitoring, as adequate data are extremely difficult to collect. Surveys often encompass only a small portion of a population's range due to difficult terrain or
Janelle J. Badger   +6 more
doaj   +1 more source

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