The use of mesoscale eddies by juvenile loggerhead sea turtles (Caretta caretta) in the southwestern Atlantic

dc.contributor.author Gaube, Peter
dc.contributor.author Barceló, Caren
dc.contributor.author McGillicuddy, Dennis J.
dc.contributor.author Domingo, Andrés
dc.contributor.author Miller, Philip
dc.contributor.author Giffoni, Bruno
dc.contributor.author Marcovaldi, Neca
dc.contributor.author Swimmer, Yonat
dc.date.accessioned 2017-03-28T18:52:30Z
dc.date.available 2017-03-28T18:52:30Z
dc.date.issued 2017-03-01
dc.description This is an open access article, free of all copyright. The definitive version was published in PLoS ONE 12 (2017): e0172839, doi:10.1371/journal.pone.0172839. en_US
dc.description.abstract Marine animals, such as turtles, seabirds and pelagic fishes, are observed to travel and congregate around eddies in the open ocean. Mesoscale eddies, large swirling ocean vortices with radius scales of approximately 50–100 km, provide environmental variability that can structure these populations. In this study, we investigate the use of mesoscale eddies by 24 individual juvenile loggerhead sea turtles (Caretta caretta) in the Brazil-Malvinas Confluence region. The influence of eddies on turtles is assessed by collocating the turtle trajectories to the tracks of mesoscale eddies identified in maps of sea level anomaly. Juvenile loggerhead sea turtles are significantly more likely to be located in the interiors of anticyclones in this region. The distribution of surface drifters in eddy interiors reveals no significant association with the interiors of cyclones or anticyclones, suggesting higher prevalence of turtles in anticyclones is a result of their behavior. In the southern portion of the Brazil-Malvinas Confluence region, turtle swimming speed is significantly slower in the interiors of anticyclones, when compared to the periphery, suggesting that these turtles are possibly feeding on prey items associated with anomalously low near-surface chlorophyll concentrations observed in those features. en_US
dc.description.sponsorship A Woods Hole Postdoctoral Fellowship awarded to PG and NASA grant NNX13AE47G funded this work. CB is grateful for support from NOAA and the NSF-GRFP (Grant No. 1314109). DJM gratefully acknowledges support from NASA and NSF. en_US
dc.identifier.citation PLoS ONE 12 (2017): e0172839 en_US
dc.identifier.doi 10.1371/journal.pone.0172839
dc.identifier.uri https://hdl.handle.net/1912/8845
dc.language.iso en_US en_US
dc.publisher Public Library of Science en_US
dc.relation.uri https://doi.org/10.1371/journal.pone.0172839
dc.rights CC0 1.0 Universal *
dc.rights.uri http://creativecommons.org/publicdomain/zero/1.0/ *
dc.title The use of mesoscale eddies by juvenile loggerhead sea turtles (Caretta caretta) in the southwestern Atlantic en_US
dc.type Article en_US
dspace.entity.type Publication
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