Detecting an orientation component in animal paths when the preferred direction is individual-dependent

Ecology
Simon Benhamou

Abstract

An orientation component leads to directionally biased paths, with major consequences in animal population redistribution. Classical orientation analyses, which focus on the overall direction of motion, are useless for detecting such a component when the preferred direction is not common to the whole population, but differs from one path to another. In-depth path analyses are required in this case. They consist of determining whether paths are more suitably represented as biased or unbiased random walks. The answer is not easy because most animals' paths show some forward persistence propensity that acts as a purely local directional bias and, hence, blurs the possible occurrence of an additional, consistent bias in a preferred direction. I highlight the key differences between biased and unbiased random walks and the different ways orientation mechanisms can generate a consistent directional bias. I then examine the strength and weakness of the available methods likely to detect it. Finally, I introduce a new procedure based on the backward evolution of the beeline distance, from the end of the path, which might correspond to a goal toward which the animal orients itself, to each of the animal's preceding locations. This new p...Continue Reading

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Citations

May 11, 2011·Proceedings of the National Academy of Sciences of the United States of America·Joost B BeltmanRob J de Boer
Apr 23, 2008·Journal of the Royal Society, Interface·Edward A CodlingSimon Benhamou
Aug 19, 2008·Journal of the Royal Society, Interface·Simona HapcaIain M Young
Jun 3, 2011·Journal of the Royal Society, Interface·Alex JamesAndrew M Edwards
May 4, 2012·Journal of the Royal Society, Interface·Elizabeth A MasdenDaniel T Haydon
Jun 7, 2013·Journal of the Royal Society, Interface·G RosserR E Baker
Aug 29, 2009·PloS One·Peter J M Van Haastert, Leonard Bosgraaf
Nov 3, 2011·PloS One·Simon BenhamouPaolo Luschi
Jun 6, 2012·PloS One·Mark Padgham
Sep 11, 2007·Ecology·Simon Benhamou
Nov 10, 2010·Ecology·Edward A CodlingGraeme J Thorn
Feb 22, 2014·TheScientificWorldJournal·Nicholas A Farmer, Jerald S Ault
Jan 24, 2016·Journal of Theoretical Biology·Edward A Codling, Nikolai W F Bode
Apr 25, 2015·The Journal of Animal Ecology·Eliezer GurarieC Michael Wagner
Apr 27, 2010·The Science of the Total Environment·Uwe SchlinkAd Ragas
Mar 7, 2008·Journal of Theoretical Biology·F BartumeusM G E da Luz
Apr 28, 2011·The Journal of Animal Ecology·Charles B YackulicMaría Uriarte
Jul 16, 2013·Ecology Letters·R P WilsonE L C Shepard
Mar 4, 2011·The Journal of Animal Ecology·Yannis P PapastamatiouKim N Holland
Aug 21, 2013·Ecology Letters·William F FaganThomas Mueller
Oct 2, 2012·The Journal of Animal Ecology·Tal AvgarJohn M Fryxell
Dec 20, 2013·Ecology Letters·Simon Benhamou
Sep 24, 2015·The Journal of Chemical Physics·Sabeeha Hasnain, Pradipta Bandyopadhyay
Jan 1, 2014·Movement Ecology·Bart KranstauberFrederic Bartumeus
Nov 13, 2020·Journal of Theoretical Biology·Kim ChristensenAna B Sendova-Franks
Jul 9, 2021·Scientific Reports·Geoffroy BerthelotVincent Bansaye
May 31, 2018··Chris PhillipsYan Sun

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