Data from: High accuracy tracking reveals how small conservation areas can protect marine megafauna

When using this dataset, please cite the original article.

Hays GC, Mortimer JA, Rattray A, Shimada T, Esteban N. 2021. High accuracy tracking reveals how small conservation areas can protect marine megafauna. Ecol Appl. e02418. doi:10.1002/eap.2418

Additionally, please cite the Movebank data package:

Hays GC, Mortimer JA, Rattray A, Shimada T, Esteban N (2021) Data from: High accuracy tracking reveals how small conservation areas can protect marine megafauna. Movebank Data Repository. doi:10.5441/001/1.r72ph75f
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Package Identifier doi:10.5441/001/1.r72ph75f  
 
Abstract Space use estimates can inform conservation management but relaying high-accuracy locations is often not straightforward. We used Fastloc-GPS Argos satellite tags with the innovation of additional data relay via a ground station (termed a “Mote”) to record high volumes (typically > 20 locations per individual per day) of high accuracy tracking data. Tags were attached in the Chagos Archipelago (Indian Ocean) in 2018-2019 to 23 immature turtles of two species for which there have been long-standing conservation concerns: 21 hawksbill turtles (Eretmochelys imbricata) and two green turtles (Chelonia mydas). Over long tracking durations (mean 227.6 days per individual), most turtles moved very little. For example, 17 of 21 hawksbill turtles remained continuously in the lagoon where they were equipped, with 95% and 50% Utilisation Distributions (UDs) averaging only 1.03 and 0.18 km2 respectively. Many individuals, and both species, could use the same small spaces, i.e., individuals did not maintain unique home ranges. However, three hawksbill turtles travelled 100s of km from the tagging site. Our results show that for some large marine vertebrates, even small protected areas of only a few km2 can encompass the movements of a large proportion of individuals over long periods. High accuracy tracking may likewise reveal the details of space use for many other animals that move little and/or use important focal areas and where previous low-accuracy tracking techniques have tended to overestimate space use.
Keywords animal movement, animal tracking, Argos, Chelonia mydas, conservation biology, Eretmochelys imbricata, green sea turtle, hawksbill sea turtle, Indian ocean, marine protected areas, satellite telemetry, sea turtles,

Hawksbill_green turtles Chagos Archipelago Western Indian Ocean View File Details
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Hawksbill_green turtles Chagos Archipelago Western Indian Ocean-reference-data View File Details
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To the extent possible under law, the authors have waived all copyright and related or neighboring rights to this data.  


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