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Climate change and sea turtles : a 150-year reconstruction of incubation temperatures at a major marine turtle rookery

Hays, Graeme C., Broderick, Annette C., Glen, Fiona and Godley, Brendon J. 2003, Climate change and sea turtles : a 150-year reconstruction of incubation temperatures at a major marine turtle rookery, Global change biology, vol. 9, no. 4, pp. 642-646, doi: 10.1046/j.1365-2486.2003.00606.x.

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Title Climate change and sea turtles : a 150-year reconstruction of incubation temperatures at a major marine turtle rookery
Author(s) Hays, Graeme C.ORCID iD for Hays, Graeme C. orcid.org/0000-0002-3314-8189
Broderick, Annette C.
Glen, Fiona
Godley, Brendon J.
Journal name Global change biology
Volume number 9
Issue number 4
Start page 642
End page 646
Total pages 5
Publisher Wiley
Place of publication London, England
Publication date 2003-04
ISSN 1354-1013
Keyword(s) Ascension Island
climate change
global warming
reptile
sex determination
turtle
Summary Sea turtles show temperature dependent sex determination. Using an empirical relationship between sand and air temperature, we reconstructed the nest temperatures since 1855 at Ascension Island, a major green turtle (Chelonia mydas) rookery. Our results show that inter-beach thermal variations, previously ascribed to the albedo of the sand, which varies hugely from one beach to another, have persisted for the last century. Reconstructed nest temperatures varied by only 0.5 °C on individual beaches over the course of the nesting season, while the temperature difference between two key nesting beaches was always around 3 °C. Hence inter-beach thermal variations are the main factor causing a large range of incubation temperatures at this rookery. There was a general warming trend for nests, with a mean increase in reconstructed nest temperatures for different months of between 0.36 and 0.49 °C for the last 100 years.
Language eng
DOI 10.1046/j.1365-2486.2003.00606.x
Field of Research 069999 Biological Sciences not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2003, Wiley
Persistent URL http://hdl.handle.net/10536/DRO/DU:30058232

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