dc.date.accessioned | 2017-08-16T12:58:52Z | |
dc.date.available | 2017-08-16T12:58:52Z | |
dc.date.created | 2012-11-19T13:03:37Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Gautestad, Arild O. . Lévy meets Poisson: A Statistical Artifact May Lead to Erroneous Recategorization of Lévy Walk as Brownian Motion. American Naturalist. 2013, 181(3), 440-450 | |
dc.identifier.uri | http://hdl.handle.net/10852/57087 | |
dc.description.abstract | The flow of GPS data on animal space is challenging old paradigms, such as the issue of the scale-free Lévy walk versus scale-specific Brownian motion. Since these movement classes often require different protocols with respect to ecological analyses, further theoretical development in this field is important. I describe central concepts such as scale-specific versus scale-free movement and the difference between mechanistic and statistical-mechanical levels of analysis. Next, I report how a specific sampling scheme may have produced much confusion: a Lévy walk may be wrongly categorized as Brownian motion if the duration of a move, or bout, is used as a proxy for step length and a move is subjectively defined. Hence, the categorization and recategorization of movement class compliance surrounding the Lévy walk controversy may have been based on a statistical artifact. This issue may be avoided by collecting relocations at a fixed rate at a temporal scale that minimizes over- and undersampling.
© 2013 University of Chicago Press | |
dc.language | EN | |
dc.publisher | University of Chicago Press | |
dc.title | Lévy meets Poisson: A Statistical Artifact May Lead to Erroneous Recategorization of Lévy Walk as Brownian Motion | |
dc.type | Journal article | |
dc.creator.author | Gautestad, Arild O. | |
cristin.unitcode | 185,15,21,90 | |
cristin.unitname | Centre for Ecological and Evolutionary Synthesis | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 963194 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=American Naturalist&rft.volume=181&rft.spage=440&rft.date=2013 | |
dc.identifier.jtitle | American Naturalist | |
dc.identifier.volume | 181 | |
dc.identifier.issue | 3 | |
dc.identifier.startpage | 440 | |
dc.identifier.endpage | 450 | |
dc.identifier.doi | http://dx.doi.org/10.1086/669148 | |
dc.identifier.urn | URN:NBN:no-59814 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0003-0147 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/57087/2/669148.pdf | |
dc.type.version | PublishedVersion | |