A scientific framework for evaluating coral reef resilience to climate change
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2016 The 21???????? century warming and acidification of tropical oceans will impact the structure and funct...
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Massachusetts Institute of Technology and Woods Hole Oceanographic Institution
2016
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/8427 2023-05-15T17:51:47+02:00 A scientific framework for evaluating coral reef resilience to climate change Barkley, Hannah C. 2016-09 https://hdl.handle.net/1912/8427 en_US eng Massachusetts Institute of Technology and Woods Hole Oceanographic Institution WHOI Theses https://hdl.handle.net/1912/8427 doi:10.1575/1912/8427 doi:10.1575/1912/8427 Coral reef conservation Global warming Thesis 2016 ftwhoas https://doi.org/10.1575/1912/8427 2022-05-28T22:59:43Z Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2016 The 21???????? century warming and acidification of tropical oceans will impact the structure and function of coral reef ecosystems. Consequently, conservation efforts are increasingly focused on identifying and protecting reef communities that demonstrate resilience to these changes. In this thesis, I develop a scientific framework for identifying climate change resilience in coral communities and, using Palau’s coral reefs as a case study, demonstrate the application of this approach. First, I use coral skeletal records to evaluate the sensitivity of coral communities to episodes of severe thermal stress. This information reveals coral reef communities that consistently exhibit weak responses to multiple high temperature events. Second, I evaluate coral reef community structure across a strong, natural pH gradient using metrics informed by laboratory ocean acidification studies. The coral communities of Palau’s Rock Island reefs show a level of pH tolerance that is unique amongst reefs studied to date. Third, I conduct laboratory and field experiments to constrain the pH thresholds of these resilient corals and investigate potential mechanisms for pH tolerance. Finally, I combine archipelago-wide coral temperature and pH sensitivity data to construct climate change resilience indices. My study succeeds in identifying a small number of coral communities that have the potential to withstand 21???????? century climate change and highlights the spatial variability in community responses to ocean warming and acidification. Critically, I present a set of scientific tools and approaches for identifying resilient coral reef communities that has applicability to coral reefs worldwide. Funding for this research was provided by the Next Wave Fund Fellowship, a National Science Foundation Graduate Student Fellowship, the NSF-funded ... Thesis Ocean acidification Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Woods Hole, MA |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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English |
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Coral reef conservation Global warming |
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Coral reef conservation Global warming Barkley, Hannah C. A scientific framework for evaluating coral reef resilience to climate change |
topic_facet |
Coral reef conservation Global warming |
description |
Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 2016 The 21???????? century warming and acidification of tropical oceans will impact the structure and function of coral reef ecosystems. Consequently, conservation efforts are increasingly focused on identifying and protecting reef communities that demonstrate resilience to these changes. In this thesis, I develop a scientific framework for identifying climate change resilience in coral communities and, using Palau’s coral reefs as a case study, demonstrate the application of this approach. First, I use coral skeletal records to evaluate the sensitivity of coral communities to episodes of severe thermal stress. This information reveals coral reef communities that consistently exhibit weak responses to multiple high temperature events. Second, I evaluate coral reef community structure across a strong, natural pH gradient using metrics informed by laboratory ocean acidification studies. The coral communities of Palau’s Rock Island reefs show a level of pH tolerance that is unique amongst reefs studied to date. Third, I conduct laboratory and field experiments to constrain the pH thresholds of these resilient corals and investigate potential mechanisms for pH tolerance. Finally, I combine archipelago-wide coral temperature and pH sensitivity data to construct climate change resilience indices. My study succeeds in identifying a small number of coral communities that have the potential to withstand 21???????? century climate change and highlights the spatial variability in community responses to ocean warming and acidification. Critically, I present a set of scientific tools and approaches for identifying resilient coral reef communities that has applicability to coral reefs worldwide. Funding for this research was provided by the Next Wave Fund Fellowship, a National Science Foundation Graduate Student Fellowship, the NSF-funded ... |
format |
Thesis |
author |
Barkley, Hannah C. |
author_facet |
Barkley, Hannah C. |
author_sort |
Barkley, Hannah C. |
title |
A scientific framework for evaluating coral reef resilience to climate change |
title_short |
A scientific framework for evaluating coral reef resilience to climate change |
title_full |
A scientific framework for evaluating coral reef resilience to climate change |
title_fullStr |
A scientific framework for evaluating coral reef resilience to climate change |
title_full_unstemmed |
A scientific framework for evaluating coral reef resilience to climate change |
title_sort |
scientific framework for evaluating coral reef resilience to climate change |
publisher |
Massachusetts Institute of Technology and Woods Hole Oceanographic Institution |
publishDate |
2016 |
url |
https://hdl.handle.net/1912/8427 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
doi:10.1575/1912/8427 |
op_relation |
WHOI Theses https://hdl.handle.net/1912/8427 doi:10.1575/1912/8427 |
op_doi |
https://doi.org/10.1575/1912/8427 |
op_publisher_place |
Woods Hole, MA |
_version_ |
1766159045434015744 |