{"id":34805,"date":"2023-08-09T02:41:00","date_gmt":"2023-08-09T02:41:00","guid":{"rendered":"https:\/\/www.lifeandnews.com\/articles\/?p=34805"},"modified":"2023-08-10T16:22:17","modified_gmt":"2023-08-10T16:22:17","slug":"the-heroic-effort-to-save-floridas-coral-reef-from-devastating-ocean-heat","status":"publish","type":"post","link":"https:\/\/www.lifeandnews.com\/articles\/the-heroic-effort-to-save-floridas-coral-reef-from-devastating-ocean-heat\/","title":{"rendered":"The heroic effort to save Florida\u2019s coral reef from devastating ocean\u00a0heat"},"content":{"rendered":"\n

Michael Childress<\/a>, Clemson University<\/a><\/em><\/p>\n\n\n\n

Armed with scrub brushes, young scuba divers<\/a> took to the waters of Florida\u2019s Alligator Reef in late July to try to help corals struggling to survive 2023\u2019s extraordinary marine heat wave. They carefully scraped away harmful algae and predators impinging on staghorn fragments, under the supervision and training of interns from Islamorada Conservation and Restoration Education<\/a>, or I.CARE.<\/p>\n\n\n\n

Normally, I.CARE\u2019s volunteer divers would be transplanting corals to waters off the Florida Keys this time of year, as part of a national effort to restore the Florida Reef<\/a>. But this year, everything is going in reverse.<\/p>\n\n\n\n

As water temperatures spiked in the Florida Keys, scientists from universities, coral reef restoration groups and government agencies launched a heroic effort<\/a> to save the corals. Divers have been in the water every day, collecting thousands of corals<\/a> from ocean nurseries along the Florida Keys reef tract and moving them to cooler water and into giant tanks on land.<\/p>\n\n\n\n

Marine scientist Ken Nedimyer and his team at Reef Renewal USA<\/a> began moving an entire coral tree nursery<\/a> from shallow waters off Tavernier to an area 60 feet deep and 2 degrees Fahrenheit (1.1 Celsius) cooler<\/a>. Even there, temperatures were running about 85 to 86 F (30 C).<\/p>\n\n\n\n

\"A
Marine scientist Ken Nedimyer collects still-healthy elkhorn coral fragments for moving. The tree structure keeps the corals free of harmful algae. Reef Renewal USA<\/a><\/figcaption><\/figure>\n\n\n\n

Their efforts are part of an emergency response on a scale never before seen in Florida.<\/p>\n\n\n\n

The Florida Reef<\/a> \u2013 a nearly 350-mile arc along the Florida Keys that is crucial to fish habitat, coastal storm protection and the local economy<\/a> \u2013 began experiencing record-hot ocean temperatures<\/a> in June 2023, weeks earlier than expected. The continuing heat has triggered widespread coral bleaching<\/a>.<\/p>\n\n\n\n

\"A
A bleached mound of coral at the Cheeca Rocks monitoring site in the Florida Keys National Marine Sanctuary that had been previously tagged shows the coral skeleton. NOAA AOML<\/a><\/figcaption><\/figure>\n\n\n\n

While corals can recover from mass bleaching events like this, long periods of high heat can leave them weak and vulnerable to disease that can ultimately kill them<\/a>.<\/p>\n\n\n\n

That\u2019s what scientists and volunteers have been scrambling to avoid.<\/p>\n\n\n\n

The heartbeat of the reef<\/h2>\n\n\n\n

The Florida Reef has struggled for years under the pressure of overfishing, disease, storms and global warming that have decimated its live corals.<\/p>\n\n\n\n

A massive coral restoration effort<\/a> \u2013 the National Oceanic and Atmospheric Administration\u2019s Mission: Iconic Reef \u2013 has been underway since 2019 to restore the reef with transplanted corals, particularly those most resilient to the rising temperatures. But even the hardiest coral transplants are now at risk. https:\/\/www.youtube.com\/embed\/PDJXgxHs7Ak?wmode=transparent&start=0 Divers involved in NOAA\u2019s Mission: Iconic Reef show how staghorn and elkhorn corals are being transplanted to help the Florida Reef recover.<\/p>\n\n\n\n

Reef-building corals are the foundation species of shallow tropical waters due to their unique symbiotic relationship with microscopic algae in their tissues.<\/p>\n\n\n\n

During the day, these algae photosynthesize, producing both food and oxygen for the coral animal. At night, coral polyps feed on plankton, providing nutrients for their algae. The result of this symbiotic relationship is the coral\u2019s ability to build a calcium carbonate skeleton and reefs that support nearly 25% of all marine life<\/a>.<\/p>\n\n\n\n

Unfortunately, corals are very temperature sensitive, and the extreme ocean heat off South Florida, with some reef areas reaching temperatures in the 90s,<\/a> has put them under extraordinary stress.<\/p>\n\n\n\n

\"Two
A boulder brain coral, Colpophyllia natans<\/em>, before and after bleaching during the 2014 marine heat wave in the Florida Keys. Photos by Michael Childress and Kylie Smith<\/figcaption><\/figure>\n\n\n\n

When corals get too hot, they expel their symbiotic algae. The corals appear white \u2013 bleached \u2013 because their carbonate skeleton shows through their clear tissue that lack any colorful algal cells.<\/p>\n\n\n\n

Corals can recover<\/a> new algal symbionts if water conditions return to normal within a few weeks. However, the increase in global temperatures due to the effects of greenhouse gas emissions from human activities is causing longer and more frequent<\/a> periods of coral bleaching worldwide, leading to concerns for the future<\/a> of coral reefs.<\/p>\n\n\n\n

A MASH unit for corals<\/h2>\n\n\n\n

This year, the Florida Keys reached an alert level 2, indicating extreme risk of bleaching, about six weeks earlier than normal.<\/p>\n\n\n\n

The early warnings and forecasts from NOAA<\/a>\u2019s Coral Reef Watch Network<\/a> gave scientists time to begin preparing labs and equipment, track the locations and intensity of the growing marine heat and, importantly, recruit volunteers.<\/p>\n\n\n\n

\"Two<\/a>
This year\u2019s maximum sea surface temperature (top chart) and degree heating weeks (lower chart), a measure of accumulated heat stress, are the highest since record-keeping began. Adapted from NOAA<\/a><\/figcaption><\/figure>\n\n\n\n

At the Keys Marine Laboratory<\/a>, scientists and trained volunteers have dropped off thousands of coral fragments collected from heat-threatened offshore nurseries. Director Cindy Lewis described the lab\u2019s giant tanks as looking like \u201ca MASH unit<\/a> for corals.\u201d<\/p>\n\n\n\n

Volunteers there and at other labs across Florida will hand-feed the tiny creatures to keep them alive until the Florida waters cool again and they can be returned to the ocean and eventually transplanted onto the reef.<\/p>\n\n\n\n

\"A
Degree heating weeks is a measure of accumulated heat stress over the previous 12 weeks. At 4-degree Celsius-weeks (7.2 Fahrenheit-weeks), corals experience stress that can lead to bleaching. Above 8 C-weeks (14.4 F-weeks), they are likely to experience bleaching. NOAA Coral Reef Watch<\/a><\/figcaption><\/figure>\n\n\n\n

Protecting corals still in the ocean<\/h2>\n\n\n\n

I.CARE<\/a> launched another type of emergency response.<\/p>\n\n\n\n

I.CARE co-founder Kylie Smith, a coral reef ecologist and a former student of mine in marine sciences, discovered a few years ago that coral transplants with large amounts of fleshy algae around them were more likely to bleach<\/a> during times of elevated temperature. Removing that algae may give corals a better chance of survival.<\/p>\n\n\n\n

\"Two<\/a>
Youth members of Diving With a Purpose attend a training session and coral maintenance dive with the Islamorada Conservation and Restoration Education team in Islamorada, Fla. I.CARE<\/figcaption><\/figure>\n\n\n\n

Smith\u2019s group typically works with local dive operators to train recreational divers to assist in transplanting and maintaining coral fragments in an effort to restore the reefs of Islamorada. In summer 2023, I.CARE has been training volunteers, like the young divers from Diving with a Purpose<\/a>, to remove algae and coral predators, such as coral-eating snails<\/a> and fireworms<\/a>, to help boost the corals\u2019 chances of survival.<\/p>\n\n\n\n

Monitoring for corals at risk<\/h2>\n\n\n\n

To help spot corals in trouble, volunteer divers are also being trained as reef observers through Mote Marine Lab\u2019s BleachWatch<\/a> program.<\/p>\n\n\n\n

Scuba divers have long been attracted to the reefs of the Florida Keys for their beauty and accessibility. The lab is training them to recognize bleached, diseased and dead corals of different species and then use an online portal to submit bleach reports across the entire Florida Reef.<\/p>\n\n\n\n

The more eyes on the reef, the more accurate the maps showing the areas of greatest bleaching concern.<\/p>\n\n\n\n

\"A
Ian Enochs, a research ecologist and lead of NOAA\u2019s Atlantic Oceanographic and Meteorological Lab Coral Program, found that every coral in the Cheeca Rocks area had bleached by Aug. 1, 2023. NOAA AOML<\/a><\/figcaption><\/figure>\n\n\n\n

Rebuilding the reef<\/h2>\n\n\n\n

While the marine heat wave in the Keys will inevitably kill some corals, many more will survive.<\/p>\n\n\n\n

Through careful analysis<\/a> of the species, genotypes and reef locations experiencing bleaching, scientists and practitioners are learn valuable information as they work to protect and rebuild a more resilient coral reef for the future.<\/p>\n\n\n\n

That is what gives hope to Smith, Lewis, Nedimyer and hundreds of others who believe this coral reef is worth saving. Volunteers are crucial to the effort, whether they\u2019re helping with coral reef maintenance, reporting bleaching or raising the awareness of what is at stake if humanity fails to stop warming the planet.<\/p>\n\n\n\n

Michael Childress<\/a>, Associate Professor of Biological Sciences & Environmental Conservation, Clemson University<\/a><\/em><\/p>\n\n\n\n

This article is republished from The Conversation<\/a> under a Creative Commons license. Read the original article<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Michael Childress, Clemson University Armed with scrub brushes, young scuba divers took to the waters of Florida\u2019s Alligator Reef in late July to try to help corals struggling to survive 2023\u2019s extraordinary marine heat wave. They carefully scraped away harmful algae and predators impinging on staghorn fragments, under the supervision and training of interns from […]<\/p>\n","protected":false},"author":44,"featured_media":34806,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3410],"tags":[14497,139,8455,5531,3181,9854,14202,2800,14496,8708,13109,2178],"_links":{"self":[{"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/posts\/34805"}],"collection":[{"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/users\/44"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/comments?post=34805"}],"version-history":[{"count":2,"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/posts\/34805\/revisions"}],"predecessor-version":[{"id":34808,"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/posts\/34805\/revisions\/34808"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/media\/34806"}],"wp:attachment":[{"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/media?parent=34805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/categories?post=34805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifeandnews.com\/articles\/wp-json\/wp\/v2\/tags?post=34805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}