A Likelihood-Based Approach to Capture-Recapture Estimation of Demographic Parameters under the Robust Design

Biometrics ◽  
1995 ◽  
Vol 51 (1) ◽  
pp. 293 ◽  
Author(s):  
William L. Kendall ◽  
Kenneth H. Pollock ◽  
Cavell Brownie
Keyword(s):  
Robust Design ◽  
Demographic Parameters ◽  
Capture Recapture

Absolute Population Estimates Using Capture–Recapture Experiments

2021 ◽  
pp. 63-112
Author(s):  
Peter A. Henderson
Keyword(s):  
Robust Design ◽  
Linear Method ◽  
Stochastic Method ◽  
Population Estimates ◽  
Protein Marking ◽  
Capture Recapture ◽  
Estimate Population Size ◽  
Log Linear ◽  
Absolute Population ◽  
Natural Marks

The main methods used to estimate population size using capture–recapture for both closed and open populations are described, including the Peterson–Lincoln estimator, the Schabel census, Bailey’s triple catch, the Jolly–Seber stochastic method, and Cormack’s log-linear method. The robust design approach is described. R code listings for commonly used packages are presented. The assumptions common to capture–recapture methods are reviewed, and tests for assumptions such as equal catchability described. The use of programs to select model assumptions are described. The main methods for marking different animal groups are described, together with the use of natural marks and parasites and DNA. Marking methods include paint marks, dyes, tagging, protein marking, DNA, natural marks, tattooing, and mutilation. Methods for handling and release are described.

scholarly journals On the Estimation of Dispersal and Movement of Birds

The Condor ◽  
2004 ◽  
Vol 106 (4) ◽  
pp. 720-731 ◽  
Author(s):  
William L. Kendall ◽  
James D. Nichols
Keyword(s):  
Robust Design ◽  
Nonlinear Dynamic ◽  
Detection Probability ◽  
Cross Correlation ◽  
Statistical Methodology ◽  
Open Population ◽  
Abundance Estimates ◽  
Capture Recapture ◽  
Over Time

Abstract The estimation of dispersal and movement is important to evolutionary and population ecologists, as well as to wildlife managers. We review statistical methodology available to estimate movement probabilities. We begin with cases where individual birds can be marked and their movements estimated with the use of multisite capture-recapture methods. Movements can be monitored either directly, using telemetry, or by accounting for detection probability when conventional marks are used. When one or more sites are unobservable, telemetry, band recoveries, incidental observations, a closed- or open-population robust design, or partial determinism in movements can be used to estimate movement. When individuals cannot be marked, presence-absence data can be used to model changes in occupancy over time, providing indirect inferences about movement. Where abundance estimates over time are available for multiple sites, potential coupling of their dynamics can be investigated using linear cross-correlation or nonlinear dynamic tools. Sobre la Estimación de la Dispersión y el Movimiento de las Aves Resumen. La estimación de la dispersión y el movimiento es importante para los ecó logos evolutivos y de poblaciones, así como también para los encargados del manejo de vida silvestre. Revisamos la metodología estadística disponible para estimar probabilidades de movimiento. Empezamos con casos donde aves individuales pueden ser marcadas y sus movimientos estimados con el uso de métodos de captura-repactura para múltiples sitios. Los movimientos pueden ser monitoreados ya sea directamente, usando telemetría o teniendo en cuenta las probabilidades de detección cuando se usan marcas convencionales. Cuando uno o más sitios no pueden ser observados, se puede estimar el movimiento usando telemetría, recuperación de anillos, observaciones circunstanciales, un diseño poblacional robusto cerrado o abierto, o determinismo parcial de los movimientos. Cuando los individuos no pueden ser marcados, se pueden usar datos de presencia-ausencia para modelar los cambios en el tiempo de la ocupación, brindando inferencias indirectas sobre los movimientos. Cuando las estimaciones de abundancia a lo largo del tiempo están disponibles para varios sitios, se puede investigar la interrelación potencial de sus dinámicas usando correlaciones cruzadas lineales o herramientas para dinámica no lineal.

Application of photographic capture?recapture modelling to estimate demographic parameters for male Asian elephants

2007 ◽  
Vol 10 (3) ◽  
pp. 391-399 ◽  
Author(s):  
Varun R. Goswami ◽  
M. D. Madhusudan ◽  
K. Ullas Karanth
Keyword(s):  
Demographic Parameters ◽  
Asian Elephants ◽  
Capture Recapture

Modelling survival and breeding dispersal to unobservable nest sites

2016 ◽  
Vol 43 (5) ◽  
pp. 411 ◽  
Author(s):  
Giacomo Tavecchia ◽  
Ana Sanz-Aguilar ◽  
Belinda Cannell
Keyword(s):  
Breeding Site ◽  
Demographic Parameters ◽  
Breeding Dispersal ◽  
Artificial Nests ◽  
Breeding Sites ◽  
Nest Sites ◽  
Local Survival ◽  
Permanent Migration ◽  
Capture Recapture ◽  
Event Capture

Context Demographic parameters in wildlife populations are typically estimated by monitoring a limited number of individuals in observable sites and assuming that these are representative of the whole population. If individuals permanently disperse to unobservable breeding sites, recruitment and immature survival are expected to be negatively biased and breeding-site fidelity cannot be investigated. Aims To develop a method to obtain unbiased estimated of survival, recruitment and breeding dispersal when individuals can move to, or recruit in, unobservable sites. Methods We used the flexibility of multi-event capture–recapture models to estimate dispersal and recruitment to unobservable sites, merging observations made at two sites within the same breeding locations. We illustrated the model with data on little penguin (Eudyptula minor) breeding in artificial as well as in natural nests. Natural nests are unknown or inaccessible and birds in these sites remain unobservable. Encounters at beaches surrounding the colony suggested that marked animals can permanently move to unobservable nests. We built the multi-event model considering two possible states of the individuals (alive breeding in a nest box and alive in a natural nest) and three types of observations (encountered at a nest only, encountered at the beach only and encountered at both places). This model ensured that the breeding dispersal to unobservable places became estimable. Key results Results indicate that the estimated survival was 8% higher than when recaptures at artificial nests were analysed alone. Also, fidelity to artificial nests was 12% lower than to natural nests. This might reflect the greater availability of natural sites or, alternatively, a heterogeneity between these two types of nest. Conclusions We obtained an estimate of local survival of little penguins breeding at Penguin Island that incorporates the permanent migration to unobservable sites and found an asymmetric dispersion towards natural nests. Implication Our conclusions suggest a need for more careful treatment of data derived from artificial sites alone, as demographic parameters might be underestimated if animals prefer natural breeding sites or if they are in greater proportion compared with artificial ones. The analytical approach presented can be applied to many biological systems, when animals might move into inaccessible or unobservable breeding sites.

Combining dead recovery, auxiliary observations and robust design data to estimate demographic parameters from marked individuals

2013 ◽  
Vol 4 (9) ◽  
pp. 828-835 ◽  
Author(s):  
William L. Kendall ◽  
Richard J. Barker ◽  
Gary C. White ◽  
Mark S. Lindberg ◽  
Catherine A. Langtimm ◽  
...  
Keyword(s):  
Robust Design ◽  
Demographic Parameters ◽  
Design Data

scholarly journals Estimating demographic parameters from capture-recapture data with dependence among individuals within clusters

2013 ◽  
Vol 4 (5) ◽  
pp. 474-482 ◽  
Author(s):  
Rémi Choquet ◽  
Ana Sanz-Aguilar ◽  
Blandine Doligez ◽  
Erika Nogué ◽  
Roger Pradel ◽  
...  
Keyword(s):  
Demographic Parameters ◽  
Capture Recapture

scholarly journals A Robust Design Capture-Recapture Analysis of Abundance, Survival and Temporary Emigration of Three Odontocete Species in the Gulf of Corinth, Greece

PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0166650 ◽  
Author(s):  
Nina Luisa Santostasi ◽  
Silvia Bonizzoni ◽  
Giovanni Bearzi ◽  
Lavinia Eddy ◽  
Olivier Gimenez
Keyword(s):  
Robust Design ◽  
Temporary Emigration ◽  
Gulf Of Corinth ◽  
Capture Recapture ◽  
Design Capture

scholarly journals Dealing with many correlated covariates in capture-recapture models

2016 ◽  
Author(s):  
Olivier Gimenez ◽  
Christophe Barbraud
Keyword(s):  
Principal Component Analysis ◽  
Population Dynamics ◽  
Statistical Significance ◽  
Principal Component ◽  
High Dimensionality ◽  
Demographic Parameters ◽  
Statistical Tools ◽  
Capture Recapture ◽  
New Variables ◽  
Standard Software

SummaryCapture-recapture models for estimating demographic parameters allow covariates to be incorporated to better understand population dynamics. However, high-dimensionality and multicollinearity can hamper estimation and inference. Principal component analysis is incorporated within capture-recapture models and used to reduce the number of predictors into uncorrelated synthetic new variables. Principal components are selected by sequentially assessing their statistical significance. We provide an example on seabird survival to illustrate our approach. Our method requires standard statistical tools, which permits an efficient and easy implementation using standard software.

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