Results 91 to 100 of about 3,606 (149)

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Calidris canutus islandica wintering in Britain from 1969 to 1995 was examined using published data on winter numbers, unpublished ringing data, and information on the percentages first year birds in late autumn and winter ...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

Ohio Conservation Plan, Revised 2019, for the Plains Gartersnake, Thamnophis radix [PDF]

open access: yes, 2019
This plan outlines strategies and methods used in an ongoing study initiated in 1999 to restore a self- sustaining population of the Plains Gartersnake (Thamnophis radix) in Ohio.
Reichenbach, Norman
core   +1 more source

Abundancia de dos poblaciones de toninas (Tursiops truncatus) en el norte de Veracruz, México Abundance of two populations of bottlenose dolphins (Tursiops truncatus) in northern Veracruz, Mexico

open access: yesRevista Mexicana de Biodiversidad, 2011
En México no se conoce el tamaño de las poblaciones de la tonina (Tursiops truncatus) debido a su gran movilidad y al ocasional intercambio de individuos entre poblaciones.
Michelle P. Valdes-Arellanes   +4 more
doaj  

Genetic and environmental factors associated with survival of a rare songbird in a fragmented urban landscape

open access: yesConservation Science and Practice
The coastal Cactus Wren (Campylorhynchus brunneicapillus) persists in small and fragmented populations throughout southern California that are subject to genetic drift and inbreeding.
Amy G. Vandergast   +6 more
doaj   +1 more source

ESTIMATION OF NOBLE CRAYFISH (ASTACUS ASTACUS L.) POPULATION SIZE IN THE VELIKA PAKLENICA STREAM (CROATIA)

open access: yesKnowledge and Management of Aquatic Ecosystems, 2004
Astacus astacus is one of four native European crayfish species living in Croatian freshwaters. It is naturally distributed in rivers belonging to the Black Sea Basin.
MAGUIRE I., HUDINA S., ERBEN R.
doaj   +1 more source

Loglinear Models for Capture-Recapture Experiments on Open Populations [PDF]

open access: yes, 1980
25 pages, 1 article*Loglinear Models for Capture-Recapture Experiments on Open Populations* (Cormack, R.
Cormack, R. M.   +3 more
core  

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