Results 271 to 280 of about 3,341,277 (327)

Mark–recapture studies and demography

2008
AbstractPopulation ecologists track wild animals over their lifetimes using mark-recapture methods. Odonates are easily marked and remain near water bodies, allowing for high recapture rates. In recent years, the focus in mark-recapture models has switched from population size estimates to survival and recapture rate estimation, and from testing ...
Adolfo Cordero-Rivera, Robby Stoks
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Trap mortality in mark-recapture studies

Environmental and Ecological Statistics, 2009
When animals die in traps in a mark-recapture study, straightforward likelihood inferences are possible in a class of models. The class includes M0, Mt, and Mb as reported by White et al. (Los Alamos National Laboratory, LA-8787-NERP, pp 235, 1982), those that do not involve heterogeneity.
Fred L. Ramsey, Aaron Johnston
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Variances of Mark-Recapture Estimates

Biometrics, 1993
When mark-recapture data are analysed by log-linear models, as described by Cormack (1989, Biometrics 45, 395-413), the analysis is in terms of parameters that are related nonlinearly to the parameters of biological interest. For several models formulae are given expressing the variance of the interesting parameter estimates in terms of those provided ...
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Mark-Recapture Estimation of a Salmon Smolt Population

Biometrics, 1994
A mark-recapture experiment was conducted applying a two-sample stratified technique to estimate the number of Atlantic salmon smolts, Salmo salar, migrating out of the Conne River, Newfoundland. We developed a model where parameters are introduced to describe the mean time for the salmon to migrate between the release site and recapture site and to ...
C J, Schwarz, J B, Dempson
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Mark‐recapture of microorganisms

Environmental Microbiology, 2022
John George McMullen, Jay T. Lennon
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Mark—recapture experiments

1985
Mark—recapture methods were originally developed for estimating the size of mobile animal populations. However, it was soon recognized that the same methods could be used for estimating survival rates in the wild. It was then a short step to using the same approach for comparing the survival rates of different morphs in a polymorphic population.
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Tag loss and the Petersen mark-recapture experiment

Biometrika, 1981
SUMMARY A problem in the Petersen capture-mark-recapture experiment (Seber, 1973, Chapter 3) is the possible loss of tags. The effect of such a loss on the usual estimate of population size and the estimate of its variance is investigated for both single and double tagging.
G. A. F. Seber, R. Felton
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Mark-Recapture Models with Parameters Constant in Time

Biometrics, 1982
The Jolly-Seber method, which allows for both death and immigration, is easy to apply but often requires a larger number of parameters to be estimated tha would otherwise be necessary. If (i) survival rate, phi, or (ii) probability of capture, p, or (iii) both phi and p can be assumed constant over the experimental period, models with a reduced number ...
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Estimating Abundance from Mark-Recapture Data

2014
In terms of modelling population dynamics, the mark-recapture literature has in recent years been dominated by methods for estimating survival, as described in Chap. 7. In this chapter, we consider open-population mark-recapture methods for estimating abundance, survival and births. We first summarise conventional methods (Seber 1973, 1982).
K. B. Newman, S. T. Buckland, B. J. T. Morgan, R. King, D. L. Borchers, D. J. Cole, P. Besbeas, O. Gimenez, L. Thomas   +8 more
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A White Shrimp Mark-Recapture Study

Transactions of the American Fisheries Society, 1974
Abstract Marked sub-adult white shrimp were released in Galveston Bay in August 1963. Recoveries indicated there was no emigration from the bay between August and mid-October. Using the Bertalanffy growth function estimates of L∞ equals 214 mm, K = 0.09 (sexes combined).
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