Big data analyses reveal patterns and drivers of the movements of southern elephant seals

Show simple item record Rodríguez, Jorge P. Fernández-Gracia, Juan Thums, Michele Hindell, Mark A. Sequeira, Ana M. M. Meekan, Mark G. Costa, Daniel P. Guinet, Christophe Harcourt, Robert G. McMahon, Clive R. Muelbert, Monica Duarte, Carlos M. Eguíluz, Víctor M. 2019-11-07T07:55:40Z 2019-11-07T07:55:40Z
dc.description.abstract [eng] The growing number of large databases of animal tracking provides an opportunity for analyses of movement patterns at the scales of populations and even species. We used analytical approaches, developed to cope with 'big data', that require no 'a priori' assumptions about the behaviour of the target agents, to analyse a pooled tracking dataset of 272 elephant seals (Mirounga leonina) in the Southern Ocean, that was comprised of >500,000 location estimates collected over more than a decade. Our analyses showed that the displacements of these seals were described by a truncated power law distribution across several spatial and temporal scales, with a clear signature of directed movement. This pattern was evident when analysing the aggregated tracks despite a wide diversity of individual trajectories. We also identified marine provinces that described the migratory and foraging habitats of these seals. Our analysis provides evidence for the presence of intrinsic drivers of movement, such as memory, that cannot be detected using common models of movement behaviour. These results highlight the potential for 'big data' techniques to provide new insights into movement behaviour when applied to large datasets of animal tracking.
dc.format application/pdf
dc.relation.isformatof Reproducció del document publicat a:
dc.relation.ispartof Scientific Reports, 2017, vol. 7, num. 112, p. 1-10
dc.rights cc-by (c) Rodríguez, Jorge P. et al., 2017
dc.subject.classification 502 - Natura. Estudi, conservació i protecció de la natura
dc.subject.classification 59 - Zoologia
dc.subject.classification Medi ambient
dc.subject.other 502 - The environment and its protection
dc.subject.other 59 - Zoology
dc.subject.other Environment
dc.title Big data analyses reveal patterns and drivers of the movements of southern elephant seals
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/publishedVersion 2019-11-07T07:55:40Z
dc.rights.accessRights info:eu-repo/semantics/openAccess

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