Results 31 to 40 of about 2,025,649 (289)
Rejection of Schmidt et al.'s estimators for bear population size
Ecology and Evolution, 2019 Aerial distance sampling of bears to estimate population size has been used throughout many parts of Alaska. The distance sampling models are complex since they need to account for undetected bears and differences in detection probabilities.
Earl Becker, Aaron Christ
doaj +1 more source
Zoologia (Curitiba), 2011 A new mark-recapture abundance estimate and a photographic census were carried out to investigate the possible decline in the abundance of the bottlenose dolphins, Tursiops truncatus (Montagu, 1821), in the Patos Lagoon estuary due to the high levels of ...
Pedro F Fruet +3 more
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Estimating demographic parameters for capture-recapture data in the presence of multiple mark types [PDF]
, 2011 In mark-recapture studies, various techniques can be used to uniquely identify individual animals, such as ringing, tagging or photo-identification using natural markings.
Pomeroy, Patrick +2 more
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An 11-digit identification system for individual Nile crocodiles using natural markings
Koedoe: African Protected Area Conservation and Science, 2016 Research and conservation of wild crocodiles and husbandry of captive crocodiles requires the reliable identification of individuals. We present a method using the individual colour markings on the first 10 single-crest scutes on the tails of Nile ...
Hindrik Bouwman, Enrico Cronje
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Towards the mother-of-all-models: customised construction of the mark-recapture likelihood function [PDF]
Animal Biodiversity and Conservation, 2004 With a proliferation of mark–recapture models and studies collecting mark–recapture data, software and analysis methods are being continually revised. We consider the construction of the likelihood for a general model that incorporates all the features ...
Barker, R. J., White, G. C.
doaj
An evaluation of population indices for northern bobwhite
Wildlife Society Bulletin, 2019 Northern bobwhite (Colinus virginianus) populations are monitored using 2 general approaches—population indices and abundance estimators. Due to their convenient sampling designs, indices are commonly used by land managers and researchers to predict or ...
Bradley W. Kubečka +5 more
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Pachyderm, 2011 The population structure of the Javan rhino (Rhinoceros sondaicus) in Ujung Kulon National Park (NP) in Banten, Indonesia was assessed using visual identification and mark-recapture estimation.
Adhi Hariyadi +5 more
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Home‐site fidelity and homing behavior of the big‐headed turtle Platysternon megacephalum
Ecology and Evolution, 2021 Site fidelity refers to the restriction of dispersal distance of an animal and its tendency to return to a stationary site. To our knowledge, the homing ability of freshwater turtles and their fidelity is reportedly very low in Asia.
Fanrong Xiao +4 more
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WinBUGS for population ecologists: Bayesian modeling using Markov Chain Monte Carlo methods. [PDF]
, 2008 This paper was presented at the EURING 2007 Technical Meeting, January 14-21, Dunedin, New Zealand. It has been submitted for publication in the conference proceedings, which will appear as a special issue of Environmental and Ecological Statistics.The ...
Grosbois, V +26 more
core +3 more sources
Trappability estimates for mark–recapture data [PDF]
Canadian Journal of Zoology, 1984 Mark–recapture methods produce more accurate estimates when a high fraction of the population is trapped. Three estimates of trappability are used in the literature, and we compare them for four species of Microtus livetrapped in Longworth traps. The trappable population is defined by the weight at first capture and varies greatly in different species.
Krebs, Charles, Boonstra, Rudy
openaire +1 more source