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Influence of body size, topography, food availability and tree-fall gaps on space use by yellow-footed tortoises (Chelonoidis denticulatus) in Central Amazonia

TitleInfluence of body size, topography, food availability and tree-fall gaps on space use by yellow-footed tortoises (Chelonoidis denticulatus) in Central Amazonia
Publication TypeJournal Article
Year of Publication2019
AuthorsTavares, AS, Morcatty, TQueiroz, Zuanon, J, Magnusson, WE
Journal TitlePLOS ONE
Volume14
Pagination1-18
Date Published02
PublisherPublic Library of Science
Abstract

{Habitat selection and extension of the area used by a given species may vary during different phases of its life and are often determined by the distribution and availability of resources throughout the landscape, such as food, breeding sites, and shelters. In this study, we assessed the influence of body size on the areas used by 21 individuals of the yellow-footed tortoises (Chelonoidis denticulatus) from January to June 2017 in a dense rain forest area in Central Amazonia. We also investigated whether individuals selected different ranges of terrain slope, elevation, areas with high food availability, or areas with treefall gaps that could be used for shelter or thermoregulation. We monitored tortoise movements using thread-bobbins, and sampled terrain characteristics, availability of potential food resources and forest gaps along the routes used by the tortoises. We also measured the same variables in plots distributed systematically throughout the study area to evaluate resource availability. Tortoises used an average area of 1.56 ha (SD = 1.51

URLhttps://doi.org/10.1371/journal.pone.0211869
DOI10.1371/journal.pone.0211869
D1 Cited or Publication: 
DataONE Cited