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Impact of marine heatwaves for sea turtle nest temperatures

Graeme C. Hays, William J. Chivers, Jacques-Olivier Laloë, Charles Sheppard, Nicole Esteban Orcid Logo

Biology Letters, Volume: 17, Issue: 5

Swansea University Author: Nicole Esteban Orcid Logo

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DOI (Published version): 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 negati...

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Published in: Biology Letters
ISSN: 1744-957X
Published: The Royal Society 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa57105
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first_indexed 2021-07-07T11:28:05Z
last_indexed 2021-07-08T03:21:30Z
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spelling v2 57105 2021-06-11 Impact of marine heatwaves for sea turtle nest temperatures fb2e760b83b4580e7445092982f1f319 0000-0003-4693-7221 Nicole Esteban Nicole Esteban true false 2021-06-11 BGPS 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. Journal Article Biology Letters 17 5 The Royal Society 1744-957X Chagos Archipelago, Granger causality testing, climate change, temperature-dependent sex determination, Hadley SST 12 5 2021 2021-05-12 10.1098/rsbl.2021.0038 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Another institution paid the OA fee This work was supported by the Bertarelli Foundation as part of the Bertarelli Programme in Marine Science (BPMS-2017–4). 2024-10-18T12:55:46.7563743 2021-06-11T15:13:17.2587835 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Graeme C. Hays 1 William J. Chivers 2 Jacques-Olivier Laloë 3 Charles Sheppard 4 Nicole Esteban 0000-0003-4693-7221 5 57105__20352__8218e03bd3c3418784e8fcc13143b4a4.pdf 57105.pdf 2021-07-07T12:28:16.1744353 Output 646891 application/pdf Version of Record true © 2021 The Authors. Released under the terms of the Creative Commons Attribution License true eng http://creativecommons.org/licenses/by/4.0/
title Impact of marine heatwaves for sea turtle nest temperatures
spellingShingle Impact of marine heatwaves for sea turtle nest temperatures
Nicole Esteban
title_short Impact of marine heatwaves for sea turtle nest temperatures
title_full Impact of marine heatwaves for sea turtle nest temperatures
title_fullStr Impact of marine heatwaves for sea turtle nest temperatures
title_full_unstemmed Impact of marine heatwaves for sea turtle nest temperatures
title_sort Impact of marine heatwaves for sea turtle nest temperatures
author_id_str_mv fb2e760b83b4580e7445092982f1f319
author_id_fullname_str_mv fb2e760b83b4580e7445092982f1f319_***_Nicole Esteban
author Nicole Esteban
author2 Graeme C. Hays
William J. Chivers
Jacques-Olivier Laloë
Charles Sheppard
Nicole Esteban
format Journal article
container_title Biology Letters
container_volume 17
container_issue 5
publishDate 2021
institution Swansea University
issn 1744-957X
doi_str_mv 10.1098/rsbl.2021.0038
publisher The Royal Society
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description 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.
published_date 2021-05-12T12:55:45Z
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score 11.037275

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