Results 11 to 20 of about 11,222 (256)

Constant-Parameter Capture-Recapture Models [PDF]

open access: yesBiometrics, 1986
Jolly (1982, Biometrics 38, 301-321) presented modifications of the Jolly-Seber model for capture-recapture data, which assume constant survival and/or capture rates. Where appropriate, because of the reduced number of parameters, these models lead to more efficient estimators than the Jolly-Seber model.
Brownie, Cavell   +2 more
openaire   +3 more sources

Multistage hierarchical capture–recapture models

open access: yesEnvironmetrics, 2023
AbstractEcologists increasingly rely on Bayesian methods to fit capture–recapture models. Capture–recapture models are used to estimate abundance while accounting for imperfect detectability in individual‐level data. A variety of implementations exist for such models, including integrated likelihood, parameter‐expanded data augmentation, and ...
Mevin B. Hooten   +3 more
openaire   +3 more sources

Performance of spatial capture-recapture models with repurposed data: Assessing estimator robustness for retrospective applications.

open access: yesPLoS ONE, 2020
Advancements in statistical ecology offer the opportunity to gain further inferences from existing data with minimal financial cost. Spatial capture-recapture (SCR) models extend traditional capture-recapture models to incorporate spatial position of ...
Jennifer B Smith   +3 more
doaj   +1 more source

Population density of sitatunga in riverine wetland habitats

open access: yesGlobal Ecology and Conservation, 2020
Estimates of population density of mammals are critical data for effective management. Estimating density is complicated if the species of interest has cryptic markings and occupies dense habitat.
Camille H. Warbington, Mark S. Boyce
doaj   +1 more source

Forecasting wildlife movement with spatial capture–recapture

open access: yesMethods in Ecology and Evolution, 2023
Wildlife movement is an important process affecting species population biology and community interactions in myriad ways. Studies of wildlife movement have focused on retrospectively estimating movements of small numbers of individuals by outfitting them
Nathan J. Crum   +2 more
doaj   +1 more source

On Identifiability in Capture–Recapture Models

open access: yesBiometrics, 2006
Summary We study the issue of identifiability of mixture models in the context of capture–recapture abundance estimation for closed populations. Such models are used to take account of individual heterogeneity in capture probabilities, but their validity was recently questioned by Link (2003, Biometrics59, 1123–1130) on the basis of their ...
Holzmann, Hajo   +2 more
openaire   +3 more sources

A Comparison of Grizzly Bear Demographic Parameters Estimated from Non-Spatial and Spatial Open Population Capture-Recapture Models.

open access: yesPLoS ONE, 2015
Capture-recapture studies are frequently used to monitor the status and trends of wildlife populations. Detection histories from individual animals are used to estimate probability of detection and abundance or density.
Jesse Whittington, Michael A Sawaya
doaj   +1 more source

Co-integration analysis of capture–recapture method in toad, Phrynoidis aspera (Gravenhorst, 1829)

open access: yesJournal of Asia-Pacific Biodiversity, 2019
The Asian giant toad, Phrynoidis aspera, research is faced mainly with twin challenges of conservation and efficient sampling techniques for research purposes.
Anuar Mohd Sar Shahrul   +4 more
doaj   +1 more source

Using the capture-recapture method to estimate the human immunodeficiency virus-positive population [PDF]

open access: yesEpidemiology and Health, 2017
OBJECTIVES The capture-recapture method was applied to estimate the number of human immunodeficiency virus (HIV)-positive individuals not registered with any data sources. METHODS This cross-sectional study was conducted in Lorestan Province, in the west
Jalal Poorolajal   +2 more
doaj   +1 more source

Trap configuration and spacing influences parameter estimates in spatial capture-recapture models. [PDF]

open access: yesPLoS ONE, 2014
An increasing number of studies employ spatial capture-recapture models to estimate population size, but there has been limited research on how different spatial sampling designs and trap configurations influence parameter estimators.
Catherine C Sun   +2 more
doaj   +1 more source

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