Effects of rising temperature on the viability of an important sea turtle rookery

Laloë,J-O, Cozens,J, Renom,B, Taxonera,A and Hays,GC 2014, Effects of rising temperature on the viability of an important sea turtle rookery, Nature Climate Change, vol. 4, no. 6, pp. 513-518, doi: 10.1038/nclimate2236.

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Title Effects of rising temperature on the viability of an important sea turtle rookery
Author(s) Laloë,J-O
Hays,GCORCID iD for Hays,GC orcid.org/0000-0002-3314-8189
Journal name Nature Climate Change
Volume number 4
Issue number 6
Start page 513
End page 518
Total pages 6
Publisher Nature Publishing Group
Place of publication London, United Kingdom
Publication date 2014-06
ISSN 1758-678X
Summary A warming world poses challenges for species with temperature-dependent sex determination, including sea turtles, for which warmer incubation temperatures produce female hatchlings. We combined in situ sand temperature measurements with air temperature records since 1850 and predicted warming scenarios from the Intergovernmental Panel on Climate Change to derive 250-year time series of incubation temperatures, hatchling sex ratios, and operational sex ratios for one of the largest sea turtles rookeries globally (Cape Verde Islands, Atlantic). We estimate that light-coloured beaches currently produce 70.10% females whereas dark-coloured beaches produce 93.46% females. Despite increasingly female skewed sex ratios, entire feminization of this population is not imminent. Rising temperatures increase the number of breeding females and hence the natural rate of population growth. Predicting climate warming impacts across hatchlings, male-female breeding ratios and nesting numbers provides a holistic approach to assessing the conservation concerns for sea turtles in a warming world. © 2014 Macmillan Publishers Limited.
Language eng
DOI 10.1038/nclimate2236
Field of Research 060299 Ecology not elsewhere classified
Socio Economic Objective 960808 Marine Flora
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Nature Publishing Group
Persistent URL http://hdl.handle.net/10536/DRO/DU:30070272

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