{"id":4280,"date":"2025-07-11T22:12:30","date_gmt":"2025-07-11T22:12:30","guid":{"rendered":"https:\/\/dornsife.usc.edu\/wrigley\/?p=4280"},"modified":"2025-07-30T22:11:53","modified_gmt":"2025-07-30T22:11:53","slug":"envisioning-a-future-for-caribbean-coral-reefs","status":"publish","type":"post","link":"https:\/\/dornsife.usc.edu\/wrigley\/2025\/07\/11\/envisioning-a-future-for-caribbean-coral-reefs\/","title":{"rendered":"Envisioning a future for Caribbean coral reefs: lessons in resilience and collaboration"},"content":{"rendered":"\n\n\n\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--article-hero \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--article-hero\"\n    \n      >\n\n    \n<div class=\"inner-wrapper\">\n          \n<div class=\"f--field f--image\">\n\n    \n    \n    \n    \n    \n    \n              \n      <img\n                            data-src=\"https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/USC_WIES_Summer_Fellow_Field_Shoot_Jenna_Dilworth_20250305_15-768x432.jpg\"\n          data-srcset=\"https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/USC_WIES_Summer_Fellow_Field_Shoot_Jenna_Dilworth_20250305_15-1920x1080.jpg 1920w,https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/USC_WIES_Summer_Fellow_Field_Shoot_Jenna_Dilworth_20250305_15-1280x720.jpg 1280w,https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/USC_WIES_Summer_Fellow_Field_Shoot_Jenna_Dilworth_20250305_15-768x432.jpg 768w\"          data-sizes=\"(min-width:1200px) 75vw, (min-width:768px) 83vw, 100vw\"          class=\"lazyload\"\n        \n                  role=\"none\"\n        \n        \n                                      \/>\n\n    \n    \n  \n  \n\n<\/div>\n  \n      <div class=\"image-caption\">\n          \n<div class=\"f--field f--description\">\n\n    \n  <p>2025 Wrigley Institute Graduate Fellow Jenna Dilworth uses an airbrush to remove tissue from a coral fragment so it can be further processed for molecular analyses. How these molecular insights from the lab bench can be applied to real-world conservation actions in the field is one of the key questions driving her research (Nick Neumann\/USC Wrigley Institute). <\/p>\n\n\n\n<\/div>\n    <\/div>\n  \n  <div class=\"text-wrapper\">\n    \n              \n<div class=\"f--field f--page-title\">\n\n    \n  <h1>Envisioning a future for Caribbean coral reefs: lessons in resilience and collaboration<\/h1>\n\n\n<\/div>\n    \n    \n          <strong class=\"author-field\"><span >By<\/span>Jenna Dilworth<\/strong>\n    \n          <span class=\"post-date-field\">July 11, 2025<\/span>\n      <\/div>\n<\/div>\n\n\n  <\/div><\/div>\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--social-share \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--social-share\"\n    \n      >\n\n    \n  <div class=\"content-wrapper\">\n    <span class=\"a2a_kit a2a_kit_size_32 addtoany_list\" style=\"line-height: 32px;\">\n      <span 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fill-rule=\"evenodd\" transform=\"translate(-6 -9)\"\/><\/svg>\n            <\/span>\n            <span class=\"a2a_label visually-hidden\">Email<\/span>\n          <\/a>\n                  <\/span>\n  <\/div>\n\n  <\/div><\/div>\n \n\n\n\n  \n    \n\n\n\n\n\n\n<div\n  class=\"cc--component-container cc--rich-text \"\n\n  \n  \n  \n  \n  \n  \n  >\n  <div class=\"c--component c--rich-text\"\n    \n      >\n\n    \n      \n<div class=\"f--field f--wysiwyg\">\n\n    \n  <p><span style=\"font-weight: 400;\">It\u2019s not always easy for scientists in my field to think about the future. <\/span><span style=\"font-weight: 400;\">I study corals. These invertebrates are the architects of some of the most biodiverse ecosystems on the planet: tropical coral reefs. Corals\u2019 symbiotic relationship with microscopic photosynthesizing algae provide them with the energy needed to build their skeletons, creating the three-dimensional structure of the reef that provides a colorful habitat for fish and other organisms. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">However, the same relationship that enables corals to build these massive calcium carbonate structures is what puts them at risk due to rising temperatures. When water temperatures increase even just 1-2 degrees Celsius above the summer average, the symbiosis between coral and algae is disrupted in a phenomenon called coral bleaching. The coral animal expels its symbiotic partner, turns stark white, and is at risk of slowly starving to death if temperatures don\u2019t return to normal.\u00a0<\/span><\/p>\n<figure id=\"attachment_4314\" aria-describedby=\"caption-attachment-4314\" style=\"width: 225px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4314 size-medium\" src=\"https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/field_photo-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\" srcset=\"https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/field_photo-225x300.jpg 225w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/field_photo-768x1024.jpg 768w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/field_photo-1152x1536.jpg 1152w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/field_photo-1536x2048.jpg 1536w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/field_photo-1280x1707.jpg 1280w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/field_photo-scaled.jpg 1920w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><figcaption id=\"caption-attachment-4314\" class=\"wp-caption-text\">Jenna Dilworth monitoring a staghorn coral outplant in April 2023. Unfortunately, this coral was one of many that didn\u2019t survive the mass bleaching event in the summer of 2023 (Courtesy of Maya Gomez).<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">During the summer of 2023, I saw the effects of bleaching up close when my research sites in the Florida Keys experienced an <\/span><a href=\"https:\/\/www.nytimes.com\/2023\/07\/31\/climate\/coral-reefs-heat-florida-ocean-temperatures.html\"><span style=\"font-weight: 400;\">unprecedented heatwave<\/span><\/a><span style=\"font-weight: 400;\">. Coral scientists use a heat stress metric called degree heating weeks (DHWs), which integrates both the amount of heat and how long it has persisted, to measure the amount of heat stress a reef has experienced. Usually, we start to see widespread coral mortality after about 8 DHWs. That summer, the Florida Keys accumulated over 20 DHWs. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">My study species, <\/span><i><span style=\"font-weight: 400;\">Acropora cervicornis<\/span><\/i><span style=\"font-weight: 400;\">, also known as the staghorn coral, was one of the most severely affected. This species is used throughout the Florida Keys and the wider Caribbean for reef restoration due to its fast growth and branching morphology that allows for easy fragmentation in coral nurseries, where smaller fragments can be grown to larger sizes before being planted back on the reef. The widespread death of these corals throughout the region has been disastrous to these efforts.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Of the 200 coral fragments I planted on two Florida reefs in October 2022, only three remain alive today. The death of my corals wasn\u2019t just a setback for my research progress, but was also emotionally devastating. After all, I started my PhD because I wanted to do applied research that would benefit restoration practitioners actively working to improve conditions on Florida\u2019s reefs. Seeing these precious coral outplants die within a few short months made me doubt whether the work I was doing would have the chance to make an impact at all.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Unfortunately, many other researchers and restoration practitioners throughout the Caribbean and the rest of the world had similar experiences: record high temperatures in 2023 and 2024 triggered the <\/span><a href=\"https:\/\/www.noaa.gov\/news-release\/noaa-confirms-4th-global-coral-bleaching-event\"><span style=\"font-weight: 400;\">fourth global coral bleaching event<\/span><\/a><span style=\"font-weight: 400;\">. Many staghorn corals in the Caribbean didn\u2019t make it through back-to-back record heatwaves. This mass bleaching event showed us that ongoing coral restoration efforts aren\u2019t sufficient to keep up with the immense pressures of climate change.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If we want Caribbean coral reefs to survive, we need to start thinking about the future\u2013envisioning that future has been the focus of my research this summer. Our lab organized a workshop at the Reef Futures Symposium in Mexico in December 2024, where we brought together researchers, restoration practitioners, and managers from throughout the Caribbean region to talk about the lessons we learned from our losses, and how we can work together to implement climate-smart restoration interventions in this region. We asked: how can we ensure that our science is being translated from the lab bench into more resilient restored reefs?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Over the course of three days, we exchanged thoughts and opinions on the kinds of advanced coral restoration interventions we should prioritize in the Caribbean. We discussed ideas ranging from assisted gene flow\u2013in which humans move corals around the region to allow the exchange of genes between populations that are no longer naturally connected\u2013to thermal preconditioning\u2013which involves exposing corals to mildly elevated temperatures in hopes of \u201ctraining\u201d them to better tolerate future heatwaves. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">We considered geographical and ecological contexts in which different approaches might be best suited and what kinds of barriers may stop them from being implemented. Additinally, we thought about how we can ensure knowledge of what works\u2013and what doesn\u2019t\u2013can be shared throughout the region, coining the term <em>One Caribbean<\/em>: despite national borders, our reefs are intricately connected, and our approaches to restoring them must reflect that.\u00a0<\/span><\/p>\n<figure id=\"attachment_4317\" aria-describedby=\"caption-attachment-4317\" style=\"width: 2560px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4317\" src=\"https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/workshop_photo-scaled.jpg\" alt=\"\" width=\"2560\" height=\"1920\" srcset=\"https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/workshop_photo-scaled.jpg 2560w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/workshop_photo-300x225.jpg 300w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/workshop_photo-1024x768.jpg 1024w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/workshop_photo-768x576.jpg 768w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/workshop_photo-1536x1152.jpg 1536w, https:\/\/dornsife.usc.edu\/wrigley\/wp-content\/uploads\/sites\/116\/2025\/07\/workshop_photo-2048x1536.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><figcaption id=\"caption-attachment-4317\" class=\"wp-caption-text\">Coral restoration experts weighing in on which strategies should be prioritized in the Caribbean at the December 2024 Reef Futures Symposium in Riviera Maya, Mexico (Courtesy of Daniel Olivares-Cordero).<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">On the final day of the workshop, we used <\/span><a href=\"https:\/\/patterns.sociocracy30.org\/consent-decision-making.html\"><span style=\"font-weight: 400;\">consent-based decision making<\/span><\/a><span style=\"font-weight: 400;\"> to rank the different restoration strategies we had discussed based on their risk and efficacy. As a result, interventions were grouped into one of four categories:\u00a0<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Low risk, high efficacy<\/b><span style=\"font-weight: 400;\">: these interventions are ready to be implemented now, and include strategies such as managed breeding to maintain genetic diversity and adding grazers to reefs to control algae.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>High risk, high efficacy<\/b><span style=\"font-weight: 400;\">: these interventions need additional work to address the risks involved with implementing them. Examples include assisted gene flow and artificially evolving algal symbionts to be more tolerant of higher temperatures.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Low risk, low efficacy:<\/b><span style=\"font-weight: 400;\"> these interventions still require additional research to make them more effective at larger scales. This includes strategies such as feeding corals during marine heatwaves and thermal preconditioning.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>High risk, low efficacy:<\/b><span style=\"font-weight: 400;\"> these interventions should not be prioritized right now as they are still too risky. Examples include brightening clouds and chemically manipulating carbon dioxide in seawater.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Since the workshop, I have had the immense privilege of continuing to work with workshop planners and participants to develop materials to communicate our results to a variety of audiences. This has included a policy brief encouraging policymakers to develop regulatory structures that can support the kind of restoration work we need to prioritize by fast-tracking emergency permitting and allowing the ethical, traceable exchange of genetic material throughout the Caribbean region. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">This summer, I am working on developing a framework for researchers and restoration practitioners to work together to get some of the most promising interventions on the ground and tested in real-world conditions. Collaborating with so many incredible people from different backgrounds and areas of expertise who are connected by a common goal has shown me that collaboration is the key to resilience. Working together, a future in which we ensured the persistence of Caribbean reefs is slowly coming into focus.<\/span><\/p>\n<p><em>Jenna Dilworth is supported by the Gerald Bakus Graduate Fellowship in Marine and Environmental Biology.<\/em><\/p>\n<div id=\"message-list_1753913423.595439\" class=\"c-virtual_list__item\" tabindex=\"-1\" role=\"listitem\" aria-setsize=\"-1\" data-qa=\"virtual-list-item\" data-item-key=\"1753913423.595439\">\n<div class=\"c-message_kit__background p-message_pane_message__message c-message_kit__message\" role=\"presentation\" data-qa=\"message_container\" data-qa-unprocessed=\"false\" data-qa-placeholder=\"false\">\n<div class=\"c-message_kit__hover\" role=\"document\" aria-roledescription=\"message\" data-qa-hover=\"true\">\n<div class=\"c-message_kit__actions c-message_kit__actions--default\">\n<div class=\"p-autoclog__hook\">\n<div class=\"c-message_kit__gutter\">\n<div class=\"c-message_kit__gutter__left\" role=\"presentation\" data-stringify-ignore=\"true\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<\/div>\n\n\n  <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":617,"featured_media":4316,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[41],"tags":[13,12],"class_list":["post-4280","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-fellowship","tag-graduate"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - 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