Results 11 to 20 of about 7,491 (94)

Integrating telemetry data at several scales with spatial capture–recapture to improve density estimates

open access: yesEcosphere, 2021
Accurate population estimates are essential for monitoring and managing wildlife populations. Mark–recapture sampling methods have regularly been used to estimate population parameters for rare and cryptic species, including the federally listed Mojave ...
Corey I. Mitchell   +7 more
doaj   +1 more source

Expanding the feasibility of fish and wildlife assessments with close‐kin mark–recapture

open access: yesEcosphere, 2020
Close‐kin mark–recapture (CKMR) is a powerful new method for the assessment of fish and wildlife population dynamics. Unlike traditional mark–recapture techniques, the use of kinship as an identifying mark is robust to many forms of capture heterogeneity
Benjamin Marcy‐Quay   +3 more
doaj   +1 more source

Abundance estimation from genetic mark-recapture data when not all sites are sampled: An example with the bowhead whale

open access: yesGlobal Ecology and Conservation, 2020
Estimating abundance is one of the most fundamental and important aspects of population biology, with major implications on how the status of a population is perceived and thus on conservation and management efforts.
Timothy R. Frasier   +5 more
doaj   +1 more source

Recapture heterogeneity in cliff swallows: increased exposure to mist nets leads to net avoidance. [PDF]

open access: yesPLoS ONE, 2013
Ecologists often use mark-recapture to estimate demographic variables such as abundance, growth rate, or survival for samples of wild animal populations.
Erin A Roche   +3 more
doaj   +1 more source

Survival rates of adult and juvenile gyrfalcons in Iceland: estimates and drivers [PDF]

open access: yesPeerJ, 2021
Knowledge of survival rates and their potential covariation with environmental drivers, for both adults and juveniles, is paramount to forecast the population dynamics of long-lived animals.
Frédéric Barraquand   +1 more
doaj   +2 more sources

Bayesian mark–recapture–resight–recovery models: increasing user flexibility in the BUGS language

open access: yesEcosphere, 2021
Estimating demographic parameters of interest is a critical component of applied conservation biology and evolutionary ecology, where demographic models and demographic data have become increasingly complex over the last several decades.
Thomas V. Riecke   +5 more
doaj   +1 more source

Rejection of Schmidt et al.'s estimators for bear population size

open access: yesEcology 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

Abundance of bottlenose dolphins, Tursiops truncatus (Cetacea: Delphinidae), inhabiting the Patos Lagoon estuary, southern Brazil: implications for conservation

open access: yesZoologia (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
doaj   +1 more source

An 11-digit identification system for individual Nile crocodiles using natural markings

open access: yesKoedoe: 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
doaj   +1 more source

Towards the mother-of-all-models: customised construction of the mark-recapture likelihood function [PDF]

open access: yesAnimal 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  

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