Home-range estimation under a restricted sample scheme

Alejandro Cholaquidis, Ricardo Fraiman and Manuel Hernández-Banadik

Journal of Nonparametric Statistics, 2024, vol. 36, issue 3, 891-910

Abstract: New continuous-time models and statistical methods have been developed to estimate some sets related to animal movement, such as the home-range and the core-area among others, when the information of the trajectory is provided by a GPS. Because data transfer costs and GPS battery life are practical constraints, the experimental designer must make critical sampling decisions to maximise information. We introduce the on–off sampling scheme, where the GPS is alternately on and off. This scheme is already used in practice but with insufficient statistical theoretical support. We prove the consistency of home-range estimators with an underlying reflected diffusion model under this sampling method. The same rate of convergence is achieved as in the case where the GPS is always on for the whole experiment. This is illustrated by a simulation study and real data. We also provide estimators of the stationary distribution, its level sets and the drift function.

Date: 2024
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DOI: 10.1080/10485252.2023.2280003

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