Development of a site fidelity index based on population capture-recapture data

PeerJ
Ayelen TschoppMariano A Coscarella

Abstract

Site fidelity is considered as an animal's tendency to return to a previously occupied place; this is a component of animal behaviour that allows us to understand movement patterns and aspects related to the animal's life history. Although there are many site fidelity metrics, the lack of standardisation presents a considerable challenge in terms of comparability among studies. This investigation focused on the theoretical development of a standardised composite site fidelity index and its statistical distribution in order to obtain reliable population-level site fidelity comparisons. The arithmetic and harmonic means were used as mathematical structures in order to create different indexes by combining the most commonly used indicators for site fidelity such as Occurrence, Permanence and Periodicity. The index performance was then evaluated in simulated populations and one real population of Commerson's dolphins (Cephalorhynchus commersonii (Lacépède 1804)). In the first case, the indexes were evaluated based on how they were affected by different probability values such as the occurrence of the individual within the study area (φ) and capture probability (p). As a precision measure for the comparison of the indexes, the Wald ...Continue Reading

References

Apr 9, 2005·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·S T BucklandR M Fewster
Nov 2, 2016·Proceedings of the National Academy of Sciences of the United States of America·Océane C SallesSerge Planes

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