Results 11 to 20 of about 3,647 (182)

Continuous time-dependent individual covariates and the Cormack-Jolly-Seber model

open access: yesAnimal Biodiversity and Conservation, 2007
Covariantes continuas individuales dependientes del tiempo y el modelo de Cormack-Jolly-Seber El modelo de Cormack–Jolly–Seber proporciona el marco básico para analizar la supervivencia de animales en poblaciones abiertas utilizando datos de captura ...
S. J. Bonner, C. J. Schwarz
doaj   +5 more sources

Continuous time-dependent Individual covariates and the Cormack-Jolly-Seber model [PDF]

open access: yesAnimal Biodiversity and Conservation, 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.
doaj   +3 more sources

Persistence of a declining anuran species across its distribution. [PDF]

open access: yesPLoS ONE
Information on a species' population dynamics, such as changes in abundance and distribution, can be used to identify declining populations and initiate conservation efforts and protections.
Erin L Koen   +5 more
doaj   +2 more sources

Evaluating camera survey methods for estimating wild turkey abundance

open access: yesWildlife Society Bulletin
Accurately estimating population parameters rests on methodological approaches that provide unbiased, cost‐effective estimates; however, assessing accuracy of estimates can be vexing as true abundance is rarely known.
Byron R. Buckley   +3 more
doaj   +2 more sources

Demography and Behaviour of Teinopodagrion oscillans (Odonata: Megapodagrionidae) in a Protected Area of the Colombian Andean Region [PDF]

open access: yesInsects
The demography and behaviour of Teinopodagrion oscillans was studied in a protected area in the Andean region of Colombia. Adult damselflies were individually marked, and using their recapture histories, we estimated survival, longevity, sex ratio, and ...
Fredy Palacino-Rodríguez   +3 more
doaj   +2 more sources

A comparison of abundance estimates from extended batch-marking and Jolly-Seber-type experiments. [PDF]

open access: yesEcol Evol, 2014
AbstractLittle attention has been paid to the use of multi‐sample batch‐marking studies, as it is generally assumed that an individual's capture history is necessary for fully efficient estimates. However, recently, Huggins et al. () present a pseudo‐likelihood for a multi‐sample batch‐marking study where they used estimating equations to solve for ...
Cowen LL   +3 more
europepmc   +4 more sources

Cormack–Jolly–Seber models: time and age perspectives [PDF]

open access: yesStochastic Environmental Research and Risk Assessment, 2020
Survival is a key demographic characteristic in many areas including both human demography and population ecology. However, it is often the case that data collection protocols are different in these areas, resulting in different models and methods of analysis.
Blanca Sarzo, David Conesa, Ruth King
openaire   +3 more sources

Apparent Survival of Territorial Golden Eagles Using Non-Invasive Genetic Profiling. [PDF]

open access: yesEcol Evol
In a novel study for the species, DNA was extracted from moulted feathers over 4 years involving 21% of the Scottish population of territorial golden eagles, and individuals' genetic profiles were analysed for apparent survival rates. Results showed sexual differences but not between two sub‐populations; very few cases of breeding dispersal were ...
Whitfield DP   +4 more
europepmc   +2 more sources

Estimating abundance of Eastern Canada-West Greenland bowhead whales using genetic mark-recapture analyses

open access: yesGlobal Ecology and Conservation, 2023
The Eastern Canada-West Greenland (EC-WG) bowhead whale (Balaena mysticetus) population is widely distributed across the eastern Canadian Arctic and across Baffin Bay to the western coast of Greenland.
Brooke A. Biddlecombe   +4 more
doaj   +1 more source

Bayesian analysis of Jolly-Seber type models [PDF]

open access: yesEnvironmental and Ecological Statistics, 2016
We propose the use of finite mixtures of continuous distributions in modelling the process by which new individuals, that arrive in groups, become part of a wildlife population. We demonstrate this approach using a data set of migrating semipalmated sandpipers (Calidris pussila) for which we extend existing stopover models to allow for individuals to ...
Matechou, Eleni   +4 more
openaire   +4 more sources

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