Capture-recapture methods in ecology are a set of statistical techniques used to estimate the size of a population of animals or plants in the wild. These methods are especially useful when it is difficult or impossible to count every individual in a population directly. We review several of these techniques, focusing on the non-parametric estimator of Chao. The main principle behind Chao’s estimator is to utilise the number of individuals observed only once (singletons) and the number of individuals observed exactly twice (doubletons) to estimate the total number of individuals in the population. Several recently introduced non-parametric estimators that improve various aspects of Chao’s estimator are proposed. Further details can be found in: • Chao, A.. Nonparametric estimation of the number of classes in a population. Scandinavian Journal of Statistics, 11, 265-270 (1984); • Jim´enez-Gamero, M.D. and Puig, P. A nonparametric method of estimation of the population size in capture–recapture experiments. Biometrical Journal, 2(4), 970-988 (2020); • Puig, P. and Kokonendji, C.C.. Non-parametric Estimation of the Number of Zeros in Truncated Count Distributions. Scandinavian Journal of Statistics, 45, 347-365 (2018)

ICM-CRM Meeting 2023, New Bridges between Marine Sciences and Mathematics, 2-10 November 2023.-- 01:36:20 How many fishes are in Sepetiba Bay? - Pere Puig

Peer reviewed