Results 261 to 270 of about 9,556 (282)

Temporal sampling frame selection in DNA-based capture–mark–recapture investigations

Ursus, 2012
Abstract Capture–mark–recapture (CMR) population parameter estimation utilizing DNA analysis from remotely-collected hair samples to identify individuals and generate encounter histories has become the standard methodology for estimating abundance of American black (Ursus americanus) and grizzly bear (U. arctos) populations.
Michael T. Wegan, Paul D. Curtis, Raymond E. Rainbolt, Beth Gardner   +3 more
openaire   +1 more source

Capture-mark-recapture analysis reveals survival correlates in Salamandrina perspicillata (Savi, 1821)

Amphibia-Reptilia, 2010
AbstractWe carried out a mark-recapture survival analysis of female Salamandrina perspicillata in two central Italian populations. Overall survival was similar in both populations (about 85-90% per year) and the estimated lifespan was about twelve years.
Damiano Antonelli, Claudio Angelini, Carlo Utzeri   +2 more
openaire   +2 more sources

Capture�mark�recapture, removal sampling, and occupancy models

2009
Abstract Understanding the distribution and abundance of organisms is frequently stated as the objective of ecological investigations (Elton 1927; Krebs 1972). Similarly, distribution and abundance are primary criteria used to classify the status of species (e.g. threatened, endangered) for conservation purposes (Gardenfors et al. 2001).
Larissa L Bailey, James D Nichols
openaire   +1 more source

Estimating abundance of American black bears using DNA-based capture–mark–recapture models

Ursus, 2009
Abstract Wildlife managers at Kenai Fjords (KEFJ) National Park, Alaska, are developing a comprehensive bear management plan. An important first step in this plan is to establish a baseline of bear abundance and inventory approaches for future monitoring efforts.
Stacie J. Robinson, Lisette P. Waits, Ian D. Martin   +2 more
openaire   +1 more source

Capture-mark-recapture to estimate the number of missed articles for systematic reviews in surgery

The American Journal of Surgery, 2013
Systematic reviews are an important knowledge synthesis tool, but with new literature available each day, reviewers must balance identifying all relevant literature against timely synthesis.This study tested capture-mark-recapture (CMR), an ecology-based technique, to estimate the total number of articles in the literature identified in a systematic ...
Henry T, Stelfox, Gary, Foster, Daniel, Niven, Andrew W, Kirkpatrick, Charlie H, Goldsmith   +4 more
openaire   +2 more sources

A review of designs for capture–mark–recapture studies in discrete time

Journal of Ornithology, 2010
Design is the most influential element in the pathway to statistical inference. Designs for capture–mark–recapture (CMR) studies have become more diverse and complex during the past 50 years. I review the history of CMR designs developed for discrete time models with a focus on the assumptions of those designs, the parameters that can be estimated, the
openaire   +1 more source

How the common vole copes with modern farming: Insights from a capture–mark–recapture experiment

Agriculture, Ecosystems & Environment, 2013
Abstract In this study, using capture–mark–recapture (CMR), a common vole population was monitored for one year in an experimental study site dominated by meadows, in which field management followed a gradient of intensiveness. The aim was to estimate the demographic response to agricultural practices of the common vole.
Bonnet, Timothée, Crespin, Laurent, Pinot, Adrien, Bruneteau, Laurent, Bretagnolle, Vincent, Gauffre, Bertrand   +5 more
openaire   +3 more sources

THE OPTIMAL NUMBER OF MARKERS IN GENETIC CAPTURE–MARK–RECAPTURE STUDIES

Journal of Wildlife Management, 2004
McKelvey and Schwartz (2004, this issue) propose that the number of markers used to assign individual identity in DNA-based population inventories should be doubled or tripled relative to established practice, primarily to facilitate indirect statistical tests for genotyping errors.
openaire   +1 more source

Catch Effectiveness Revealed by Site-Related Differences in Capture–Mark–Recapture Methods: A Butterfly Metapopulation Study

Environmental Entomology, 2022
AbstractUnderstanding metapopulation structures is very important in the context of ecological studies and conservation. Crucial in this respect are the abundances of both the whole metapopulation and its constituent subpopulations. In recent decades, capture–mark–recapture studies have been considered the most reliable means of calculating such ...
openaire   +2 more sources

Demographic heterogeneity among individuals can explain the discrepancy between capture–mark–recapture and waterfowl count results

The Condor, 2014
ABSTRACT Demographic heterogeneity has long been considered within wildlife populations, but only the modern development of capture–mark–recapture methods allows this to be easily tested and quantified. It is now possible to rapidly assess whether the modeling of heterogeneous populations, in which categories of individuals differ in survival rate ...
Guillemain, Matthieu, Pradel, Roger, Devineau, Olivier, Simon, Géraldine, Gauthier-Clerc, Michel   +4 more
openaire   +2 more sources