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Impact of marine heatwaves for sea turtle nest temperatures
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Hays, Graeme C, Chivers, William J, Laloë, Jacques-Olivier, Sheppard, Charles (Charles R. C.) and Esteban, Nicole (2021) Impact of marine heatwaves for sea turtle nest temperatures. Biology letters, 17 (5). 20210038. doi:10.1098/rsbl.2021.0038
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Official URL: https://doi.org/10.1098/rsbl.2021.0038
Abstract
There are major concerns about the ecological impact of extreme weather events. In the oceans, marine heatwaves (MHWs) are an increasing threat causing, for example, recent devastation to coral reefs around the world. We show that these impacts extend to adjacent terrestrial systems and could negatively affect the breeding of endangered species. We demonstrate that during an MHW that resulted in major coral bleaching and mortality in a large, remote marine protected area, anomalously warm temperatures also occurred on sea turtle nesting beaches. Granger causality testing showed that variations in sea surface temperature strongly influenced sand temperatures on beaches. We estimate that the warm conditions on both coral reefs and sandy beaches during the MHW were unprecedented in the last 70 years. Model predictions suggest that the most extreme female-biased hatchling sex ratio and the lowest hatchling survival in nests in the last 70 years both occurred during the heatwave. Our work shows that predicted increases in the frequency and intensity of MHWs will likely have growing impacts on sea turtle nesting beaches as well as other terrestrial coastal environments.
| Item Type: | Journal Article | ||||||
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| Subjects: | Q Science > QL Zoology | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||
| SWORD Depositor: | Library Publications Router | ||||||
| Library of Congress Subject Headings (LCSH): | Sea turtles -- Nests -- Effect of heat on, Sea turtles -- Nests -- Effect of temperature on, Loggerhead turtle -- Effect of temperature on, Climatic changes -- British Indian Ocean Territory, Loggerhead turtle -- Nests -- Effect of temperature on, Sea turtles -- Conservation | ||||||
| Journal or Publication Title: | Biology letters | ||||||
| Publisher: | The Royal Society | ||||||
| ISSN: | 1744-957X | ||||||
| Official Date: | 12 May 2021 | ||||||
| Dates: |
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| Volume: | 17 | ||||||
| Number: | 5 | ||||||
| Article Number: | 20210038 | ||||||
| DOI: | 10.1098/rsbl.2021.0038 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Date of first compliant deposit: | 19 April 2022 | ||||||
| Date of first compliant Open Access: | 19 April 2022 | ||||||
| RIOXX Funder/Project Grant: |
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| Is Part Of: | 1 |
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