Data from: Allometric and temporal scaling of movement characteristics in Galapagos tortoises
Data from: Allometric and temporal scaling of movement characteristics in Galapagos tortoises
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Date
2016-06-29
Citation
Bastille-Rousseau G, Yackulic CB, Frair JL, Cabrera F, Blake S. 2016. Data from: Allometric and temporal scaling of movement characteristics in Galapagos tortoises. Movebank Data Repository. https://doi.org/10.5441/001/1.2cp86266Abstract
NOTE: An updated and larger version of this dataset is available. See https://doi.org/10.5441/001/1.6gr485fk. ABSTRACT: (1) Understanding how individual movement scales with body size is of fundamental importance in predicting ecological relationships for diverse species. One-dimensional movement metrics scale consistently with body size yet vary over different temporal scales. Knowing how temporal scale influences the relationship between animal body size and movement would better inform hypotheses about the efficiency of foraging behaviour, the ontogeny of energy budgets, and numerous life history trade-offs. (2) We investigated how the temporal scaling of allometric patterns in movement vary over the course of a year, specifically during periods of motivated (directional and fast movement) and unmotivated (stationary and tortuous movement) behaviour. We focused on a recently diverged group of species that displays wide variation in movement behaviour—giant Galapagos tortoises (Chelonoidis spp.)—to test how movement metrics estimated on a monthly basis scaled with body size. (3) We used state-space modelling to estimate seven different movement metrics of Galapagos tortoises. We used log-log regression of the power law to evaluate allometric scaling for these movement metrics, and contrasted relationships by species and sex. (4) Allometric scaling of movement was more apparent during motivated periods of movement. During this period, allometry was revealed at multiple temporal intervals (hourly, daily, and monthly), with values observed at daily and monthly intervals corresponding most closely to the expected ¼ scaling coefficient, albeit with wide credible intervals. We further detected differences in the magnitude of scaling among taxa uncoupled from observed differences in the temporal structuring of their movement rates. (5) Our results indicate that the definition of temporal scales is fundamental to the detection of allometry of movement, and should be given more attention in movement studies. Our approach not only provides new conceptual insights into temporal attributes in one-dimensional scaling of movement, but also generates valuable insights into the movement ecology of iconic yet poorly understood Galapagos giant tortoises.
Keywords
Chelonoidis donfaustoi,Chelonoidis hoodensis,Chelonoidis porteri,animal tracking,Chelonoidis donfaustoi,Chelonoidis hoodensis,Chelonoidis porteri,Chelonoidis vandenburghi,correlated random walk,directional persistence,displacement,ectotherm,Galapagos,giant tortoise,interval,temporal scale
DOIs of related Publications
BibTex
@misc{001/1_2cp86266,
title = {Data from: Allometric and temporal scaling of movement characteristics in Galapagos tortoises},
author = {Bastille-Rousseau, G and Yackulic, CB and Frair, JL and Cabrera, F and Blake, S},
year = {2016},
URL = {http://dx.doi.org/10.5441/001/1.2cp86266},
doi = {doi:10.5441/001/1.2cp86266},
publisher = {Movebank data repository}
}RIS
TY - DATA ID - doi:10.5441/001/1.2cp86266 T1 - Data from: Allometric and temporal scaling of movement characteristics in Galapagos tortoises AU - Bastille-Rousseau, Guillaume AU - Yackulic, Charles B. AU - Frair, Jacqueline L. AU - Cabrera, Freddy AU - Blake, Stephen Y1 - 2016/06/29 KW - Chelonoidis donfaustoi KW - animal movement KW - Chelonoidis hoodensis KW - Chelonoidis porteri KW - animal tracking KW - Chelonoidis donfaustoi KW - Chelonoidis hoodensis KW - Chelonoidis porteri KW - Chelonoidis vandenburghi KW - correlated random walk KW - directional persistence KW - displacement KW - ectotherm KW - Galapagos KW - giant tortoise KW - interval KW - temporal scale KW - Chelonoidis donfaustoi KW - Chelonoidis hoodensis KW - Chelonoidis porteri PB - Movebank data repository UR - http://dx.doi.org/10.5441/001/1.2cp86266 DO - doi:10.5441/001/1.2cp86266 ER -