A landmark study by Global FinPrint reveals sharks are absent on many of the world's coral reefs, indicating they are functionally extinct. Global FinPrint
By JoAnn Adkins
A landmark study by Global FinPrint reveals sharks are absent on many of the world's coral reefs, indicating they are functionally extinct — too rare to fulfill their normal role in the ecosystem.
<p>Of the 371 reefs surveyed in 58 countries, sharks were not observed on nearly 20 percent, indicating a widespread decline that has gone undocumented on this scale until now. The Global FinPrint team, led by researchers at Florida International University (FIU), also identified conservation measures that could lead to recovery of these iconic predators.</p><p>Essentially no sharks were detected on any of the reefs in the Dominican Republic, the French West Indies, Kenya, Vietnam, the Windward Dutch Antilles and Qatar. Among these, a total of only three sharks were observed during more than 800 survey hours, according to the study published today in <a href="https://www.nature.com/articles/s41586-020-2519-y#https://www.nature.com/articles/s41586-020-2519-y" target="_blank"><em>Nature</em></a>.</p><p>"While Global FinPrint results exposed a tragic loss of sharks from many of the world's reefs, it also shows us signs of hope," said Jody Allen, co-founder and chair of the Paul G. Allen Family Foundation. "The data collected from the first-ever worldwide survey of sharks on coral reefs can guide meaningful, long-term conservation plans for protecting the reef sharks that remain."</p>
<p>This benchmark for the status of reef sharks around the world reveals an alarming global loss of these iconic species that are important food resources, tourism attractions, and top predators on coral reefs. Their loss is due in large part to overfishing of sharks, with the single largest contributor being destructive fishing practices, such as the use of longlines and gillnets.</p><p>"Although our study shows substantial negative human impacts on reef shark populations, it's clear the central problem exists in the intersection between high human population densities, destructive fishing practices, and poor governance," said <a href="https://case.fiu.edu/about/directory/profiles/chapman-demian.html" target="_blank">Demian Chapman</a>, Global FinPrint co-lead, associate professor in <a href="https://case.fiu.edu/biology/" target="_blank">FIU's Department of Biological Sciences</a> and researcher in the Institute of Environment. "We found that robust shark populations can exist alongside people when those people have the will, the means, and a plan to take conservation action."</p><p>The study revealed several countries where shark conservation is working and the specific actions that can work. The best performing nations compared to the average of their region included Australia, the Bahamas, the Federated States of Micronesia, French Polynesia, the Maldives and the United States. These nations reflect key attributes that were found to be associated with higher populations of sharks — being generally well-governed and either banning all shark fishing or having strong, science-based management limiting how many sharks can be caught.</p>
<p>"These nations are seeing more sharks in their waters because they have demonstrated good governance on this issue," said Aaron MacNeil, lead author of the Global FinPrint study and associate professor at Dalhousie University. "From restricting certain gear types and setting catch limits, to national-scale bans on catches and trade, we now have a clear picture of what can be done to limit catches of reef sharks throughout the tropics."</p><p>The FinPrint team is wrestling with the fact that conservation action on sharks alone can only go so far. Researchers are now looking at whether recovery of shark populations requires management of the wider ecosystem to ensure there are enough reef fish to feed these predators.</p><p>"Now that the survey is complete, we are also investigating how the loss of sharks can destabilize reef ecosystems," said <a href="https://case.fiu.edu/about/directory/profiles/heithaus-michael.html" target="_blank">Mike Heithaus</a>, Global FinPrint co-lead and dean of the <a href="https://case.fiu.edu/index.html" target="_blank">College of Arts, Sciences & Education</a> at Florida International University. "At a time when corals are struggling to survive in a changing climate, losing reef sharks could have dire long-term consequences for entire reef systems."</p>
<p>Launched in the summer of 2015, Global FinPrint's data were generated from baited remote underwater video stations (BRUVS) that consist of a video camera placed in front of a standard amount of bait – a "Chum Cam." Coral reef ecosystems were surveyed with BRUVS in four key geographic regions: The Indo-Pacific, Pacific, the Western Atlantic and the Western Indian Ocean.</p><p>Over the course of four years, the team captured and analyzed more than 15,000 hours of video from surveys of 371 reefs in 58 countries, states and territories around the world. The work was conducted by hundreds of scientists, researchers, and conservationists organized by a network of collaborators from Florida International University, the Australian Institute of Marine Science, Curtin University, Dalhousie University, and James Cook University.</p><p>For more information and a new global interactive data-visualized map of the Global FinPrint survey results, visit <a href="https://globalfinprint.org/" target="_blank">https://globalfinprint.org</a>.</p>
<p><em>Reposted with permission from </em><em><a href="https://news.fiu.edu/2020/first-of-its-kind-global-survey-led-by-fiu-researchers-reveals-sharks-are-functionally-extinct-from-many-reefs" target="_blank">Florida International University</a>.</em><a href="https://www.ecowatch.com/r/entryeditor/2646585350#/" target="_self"></a></p>
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Start-up ARC Marine has created a plastic-free alternative to help restore marine biodiversity. ARC Marine
By Douglas Broom
Artificial reefs play an important role in protecting offshore installations like wind farms. Unprotected, the turbine masts are exposed to tidal scouring, undermining their foundations.
<p>Engineers often use undersea concrete "mats" composed of large blocks to protect the bottom of these towers on the seabed. There are <a href="https://www.oilandgasvisionjobs.com/news-item/award-short-listing-sounds-starter-gun-on-operator-race-to-first" target="_blank">40,000 of them in the waters around the UK alone</a>.</p><p>Wind farms are an important part of our transition to a low-carbon economy. But many of the concrete defenses submerged to protect them <a href="https://www.oilandgasvisionjobs.com/news-item/award-short-listing-sounds-starter-gun-on-operator-race-to-first" target="_blank">contain plastics and are considered by environmental groups to be marine litter</a>. This often needs to be removed, recycled or disposed of.</p><p>So one start-up has developed an alternative. <a href="https://arcmarine.co.uk/" target="_blank">ARC Marine's</a> <a href="https://arcmarine.co.uk/reef-cubes/" target="_blank">reef cubes</a> are made from recycled aggregate and sand that is a byproduct of the quarrying industry. The company says this reduces carbon emissions by 90% compared to the processes used to make common types of cement.</p><p>The cubes interlock, leaving larger living spaces for fish, crabs and lobsters, and their porous surface is designed to allow marine plants to establish easily and grow. The aim is for these alternative reefs to protect vital offshore installations from storms and erosion while also encouraging marine biodiversity.</p>
<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQ2MTI4OS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0ODE3MzE0M30.sKq7_hgxvR52i7pNcgndbao5azpyBUjrM-PcP7el0pU/img.jpg?width=980" id="625c7" class="rm-shortcode" data-rm-shortcode-id="4a61b8c4884f6fdf84c19a16e180d49e" data-rm-shortcode-name="rebelmouse-image" />
Home from home: Reef cubes encourage marine biodiversity. ARC Marine
<p>The <a href="https://arcmarine.co.uk/marine-eco-engineering-2/offshore-renewable-energy/" target="_blank">cost of removing the existing concrete mats</a> is estimated at $32 million for each gigawatt of a wind farm's output, according to ARC Marine. Reef cubes are designed to be left in place even after a farm has been decommissioned.</p><p>The company says the cubes will also help to restore marine habitats devastated by human impacts on the environment.</p><p>It's an urgent problem. <a href="https://www.un.org/en/chronicle/article/can-we-save-coral-reefs" target="_blank">Around 70% of coral reefs are under threat</a>, while <a href="https://www.wildlifetrusts.org/habitats/marine/rocky-reefs" target="_blank">rock reefs also suffer</a> from damage due to practices like trawling and dredging. The United Nations warns that <a href="http://www.unesco.org/new/en/natural-sciences/ioc-oceans/focus-areas/rio-20-ocean/blueprint-for-the-future-we-want/marine-biodiversity/facts-and-figures-on-marine-biodiversity/" target="_blank">half of all marine species could be on the brink of extinction by the end of this century</a>.</p>
<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzQ2MTI5OS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYxODA2OTkzMX0.Y3QEP6cKE94ovdJdOUWPuFgYyqewKNOoFgVgz1XkT7Y/img.png?width=980" id="39154" class="rm-shortcode" data-rm-shortcode-id="302e4569ed96786ef9604aeff96676df" data-rm-shortcode-name="rebelmouse-image" />
<p>Tom Birbeck, CEO and founder of ARC Marine, calls the reef cubes "building blocks for the ocean" and says they were inspired by the belief that every offshore and coastal project can have a positive impact on ocean health. The company adds that it can help with meeting <a href="https://arcmarine.co.uk/arc-marine-impact/" target="_blank">five of the UN's Sustainable Development Goals</a> – primarily goal 14: conserving life below water.</p><p>"Reef cubes accelerate reef creation and help repair ecosystems that have been destroyed from centuries of bottom trawling and dredging," he says.</p><p>"The global increase in offshore wind demand provides an unprecedented opportunity to rebuild rocky reef habitats around offshore construction projects which historically have caused damage and often deploy toxic and plastic-laden materials."</p>
<p>By restoring the marine environment, the cubes can also encourage sustainable fishing and eco-tourism, he says. And if coupled with <a href="https://www.oilandgasvisionjobs.com/news-item/award-short-listing-sounds-starter-gun-on-operator-race-to-first" target="_blank">a ban on trawling in areas where they are submerged</a>, they could help fish stocks to recover.</p><p>The team behind the cubes was shortlisted for the <a href="https://arcmarine.co.uk/arc-marine-join-katapult-ocean-batch-2-2/" target="_blank">2020 Offshore Achievement Awards</a> – often dubbed "the offshore Oscars" – for their work on the project.</p>
<p class=""><em>Reposted with permission from <a href="https://www.weforum.org/agenda/2020/07/reef-cubes-arc-marine-biodiversity-wind-farms/" target="_blank">World Economic Forum</a>.</em></p>
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As restoration managers repair damaged corals, sound recordings can help jumpstart the process of restoring vibrant – and noisy – coral reef ecosystems. CC by 2.0
A healthy coral reef is a noisy place.
<p><br/></p>
<iframe style="border: none" src="//html5-player.libsyn.com/embed/episode/id/14386763/height/45/theme/standard/thumbnail/yes/direction/backward/" height="45" width="100%" scrolling="no" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe>
<p>"You've got this constant crackling sound. … That's the sound of snapping shrimp," says Steve Simpson of the University of Exeter in the United Kingdom. "Then on top of that, pops, grunts, growls, trumpeting sounds, whooping sounds … and these are generally made by fish that are communicating with each other."</p><p>But Simpson says after damaging coral bleaching events – which are growing more common as oceans warm – that soundscape changes.</p><p>He says that when his team visited part of the Great Barrier Reef after a major bleaching event, "really to our shock, we found that the reef had gone quiet."</p>
<p>It was a sign that many sea creatures had left the area. Now Simpson's team is using sound to draw some of that life back.</p><p>At 11 locations in the Great Barrier Reef, they played recordings of a healthy reef ecosystem. After six weeks, they compared the fish life in those places with that in other areas. They found that twice as many fish had returned to the audio-enriched sites.</p><p>So Simpson says that as restoration managers repair damaged corals, sound recordings can help jumpstart the process of restoring vibrant – and noisy – coral reef ecosystems.</p>
<p class=""><em>Reposted with permission from <a href="https://www.yaleclimateconnections.org/2020/06/scientists-use-recorded-sounds-to-lure-fish-back-to-great-barrier-reef/" target="_blank">Yale Climate Connections.</a></em></p>From Your Site Articles
- This Robot Is Delivering Coral Babies to the Great Barrier Reef ... ›
- The Great Barrier Reef is on a Knife Edge ›
- 2020 Great Barrier Reef Bleaching Event Is Most Widespread to Date ›
- Could Plastic-Free 'Reef Cubes' Help Save the Ocean? - EcoWatch ›
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By Jeremy Deaton, video by Bart Vandever
The 2010 BP oil spill dumped more than 200 million gallons of crude oil into the Gulf of Mexico, where it killed billions of fish. Had things gone as planned, that oil would have fueled cars and trucks, worsening climate change, which is going to kill billions of fish — and that was the best-case scenario. In short, oil is bad for sea life.
<p>Except sometimes it's not.</p><p>That's because the legs and bracings holding up oil platforms are the ideal setting for ocean reefs. Fish like to gather around the pylons, which are covered in mussels, barnacles and corals. Emily Hazelwood, who worked as a field technician after the BP oil spill, recalled learning about the reefs firsthand.</p>
<p>"BP had hired all the fishermen who lost their jobs to drive our boats," she said. "Every time we would go out with them, and we would pass one of the many oil platforms, they would say they couldn't wait to go out there fishing."</p><p>Experts say offshore oil will <a href="https://www.bloomberg.com/news/articles/2019-11-12/offshore-oil-to-peak-in-2020-then-join-shale-in-market-slowdown" target="_blank">peak this year</a> as prices fall, a trend <a href="https://fortune.com/2020/03/20/oil-slide-price-shock-demand-hit-opec-coronavirus/" target="_blank">exacerbated</a> by the coronavirus and the ongoing price war between Saudi Arabia and Russia. The slump is expected to send a growing number of rigs offline.</p>
<p>There is a real question as to what to do with the shuttered rigs, which can provide a safe home to ocean life. Oil platforms typically lie far from shore, so they are protected from the water pollution that empties into the ocean, Hazelwood said. They are safe from commercial fishing trawlers that gather up schools of fish out at sea.</p><p>"Stretching from sea floor to sea surface, these platforms can be as large as the Empire State Building, which provides a lot of real estate for marine life," Hazelwood said. "That richness of life on an oil platform is just so cool. I have never seen a group of fish like that before."</p>
<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzE2NzQ0OS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYwNzI5ODU4OX0.Fevmxtg8wssystdKM0porKSik-aLfx2xUjLHPUxuZQQ/img.png?width=980" id="edf6a" class="rm-shortcode" data-rm-shortcode-id="4bf306b9d793fcd992629b7f1234a94b" data-rm-shortcode-name="rebelmouse-image" />
A diver explores sea life on the Eureka oil rig off the coast of Long Beach, California. Blue Latitudes
<p>Hazelwood and her business partner Amber Sparks, co-founded consulting firm <a href="http://www.rig2reefexploration.org/team" target="_blank">Blue Latitudes</a>. Together, they work with oil companies to preserve the reefs that form on decommissioned oil platforms, lopping off the top while letting the rest of the structure stay in place. This process can save oil firms millions by sparing them the cost of tearing down an old rig.</p><p>Naturally, not everyone is wild about leaving the skeletons of oil platforms to rust in the ocean. In 2010, California <a href="https://www.ioes.ucla.edu/wp-content/uploads/RC-Rigs-to-Reef-Law-Fall2010.pdf" target="_blank">passed a controversial law</a> that would allow oil firms to convert old rigs into artificial reefs. Critics say it lets companies off the hook for cleanup by making the state liable for the remains of decommissioned oil platforms.</p><p>"The oil companies walk away. The state has to deal with this structure in the ocean forever, dealing with any safety issues, any pollution issues, any maintenance issues," said Linda Krop, chief counsel with the Environmental Defense Center in Santa Barbara, California.</p><img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzE2NzQ1MC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYwMTg4OTI4OX0.HR7BkA8MXTe3TnuvNDgeWH54iQ1BtST3shnMPlswIPk/img.png?width=980" id="8e6af" class="rm-shortcode" data-rm-shortcode-id="2ac4982120d288e03ade22aa5f50d8d0" data-rm-shortcode-name="rebelmouse-image" />
<p class=""><em>Reposted with permission from <a href="https://nexusmedianews.com/the-dazzling-ocean-reefs-hidden-beneath-oil-rigs-video-67cbd80a54cc" target="_blank">Nexus Media</a>.</em><em></em></p>Divers explore sea life on the Eureka oil rig off the coast of Long Beach, California. Blue Latitudes
<p>She said it's also unclear if the rigs-to-reef program has much value for sea creatures. If old oil platforms become hot spots for recreational fishing, that could leave reefs mostly barren of marine life.</p><p>"We don't know what benefit will arise from leaving a platform at sea. We want that studied. That's what the current law requires. But the proponents are trying to weaken that part of the law," she said.</p><p>Hazelwood and Sparks, for instance, have called for streamlining the rigs-to-reef program to make it easier for oil companies to convert old platforms into ocean habitats. They say that tearing down viable reefs just doesn't make sense.</p><p>"Most environmental groups, they want to go back to the way the world was 10,000 years ago. And who wouldn't? I mean, that would just be an unbelievable planet to live on," Hazelwood said. "But that's not necessarily the reality of our situation right now, so we advocate for finding that silver lining."</p>From Your Site Articles
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