Wednesday, November 18, 2009

Coastal habitats may sequester 50 times more carbon than tropical forests by area

"I took a journalist interested in mangroves into a small lagoon where juvenile sharks could be found. Instead of finding sharks, we found a backhoe dredging a large sand spit across the lagoon. The work was being done without sediment traps and as we later found out, without permits. One mangrove shoot stood in the eventual path of the backhoe and I decided to get a shot of it standing tall - both condemned and yet defiant to the bitter end." Photo and explanation by Matthew D Potenski, MDP Photography/Marine Photobank.

From an article by Jeremy Hance on Mongabay.com:

Highly endangered coastal habitats are incredibly effective in sequestering carbon and locking it away in soil, according to a new paper in a report by the IUCN. The paper attests that coastal habitats—such as mangroves, sea grasses, and salt marhses—sequester as much as 50 times the amount of carbon in their soil per hectare as tropical forest.

"The key difference between these coastal habitats and forests is that mangroves, seagrasses and the plants in salt marshes are extremely efficient at burying carbon in the sediment below them where it can stay for centuries or even millennia. Tropical forests are not as effective at transferring carbon into the soil below them, instead storing most carbon in the living plants and litter," explains the paper's author and Conservation International’s Marine Climate Change Director, Dr. Emily Pidgeon. "But coastal ecosystems keep sequestering large amounts of carbon throughout their life cycle. Equally, the majority of carbon stays locked away in the soil rather than the plant, so only a relatively small amount is released when the plant dies."

This capacity for coastal environments to lock away carbon for thousands of years has largely been ignored in accounts of the global carbon cycle, according to the paper, even though the amount of carbon they are responsible for storing is very high.

Coastal habitats with vegetation "[contribute] about half of the total carbon sequestration in ocean sediments even though they account for less than 2 percent of the ocean surface,” Pidgeon writes, explaining that much of this is capacity is due to the fact that coastal vegetation usually spreads deeper below ground than it grows above with some plants going as deep as eight meters.

Read more...

Tuesday, November 17, 2009

Caribbean, Gulf spared widespread coral damage

From an article by David McFadden of the Associated Press:

SAN JUAN, Puerto Rico — Lower-than-feared sea temperatures this summer gave a break to fragile coral reefs across the Caribbean and the central Gulf of Mexico that were damaged in recent years, scientists said Thursday [November 5, 2009].

Unusually warm water in recent years has caused the animals that make up coral to expel the colorful algae they live with, creating a bleached color. If the problem persists, the coral itself dies — killing the environment where many fish and other marine organisms live.

"We dodged a bullet this year. The good news is that temperatures didn't get quite warm enough for there to be a large-scale bleaching problem," said C. Mark Eakin, coordinator of the National Oceanic and Atmospheric Administration's Coral Reef Watch network. He was among scientists gathered in Puerto Rico's capital for a meeting of the U.S. Coral Reef Task Force.

The worst coral bleaching in the region's recorded history occurred in 2005, when hot seas caused bleaching of as much as 90 percent of corals in the eastern Caribbean, with more than half of that dying.

In July, the Coral Reef Watch network warned that high temperatures this year might lead to severe coral problems because sea surface temperatures in parts of the Caribbean were unusually hot.

Eaken said the threat had passed for 2009, since temperatures are now cooling, but the problem could return.

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Monday, November 16, 2009

Climate change killing sea turtles

From an article on UPI.com:

PLAYA GRANDE, Costa Rica, Nov. 14 (UPI) -- Climate change threatens the extinction of leatherback sea turtles that have called the Pacific Ocean home for 150 million years, scientists said.

Warmer temperatures and rising seas are further reducing turtle populations already devastated by beach development, net fishing and restaurants that consider turtle eggs a delicacy.

Just 32 leatherbacks were seen digging nests last year on a beach at Leatherback Sea Turtle National Park, Playa Grande, Costa Rica, where the park's turtle museum was abandoned three years ago and now is surrounded by weeds.

"We do not promote this as a turtle tourism destination anymore because we realize there are far too few turtles to please," Alvaro Fonseca, a park ranger, told The New York Times in a story published Saturday.

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Friday, November 13, 2009

We get to choose fate of the seas

From a post on the blog of The Ocean Project:

Sylvia Earle - also known as "Her Deepness" and featured earlier this year in this blog when she won a coveted TED Prize - has written a book, The World is Blue: How Our Fate and the Ocean's Are One, published earlier this year and in which she discusses the huge changes in the world's ocean she has witnessed over the decades and offers her hopeful thoughts on how we can restore the health of our shared world ocean.

In an interview with Yale Environment 360, Earle provides her wise take on the state of our world ocean and what can be done, summarized nicely here: “We get to choose. We either get to choose by conscious action or by default because we are complacent... thinking somebody else will look after this. But nobody else will take care of these issues.”

Read the interview with Sylvia Earle, watch her on Colbert Nation (after the :30 commercial, you'll get a 5:47 interview by Stephen Colbert with Sylvia Earle)

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Thursday, November 12, 2009

Coral highlights complexity of climate change

From an article by Lucy-Claire Saunders on China View:

UNITED NATIONS, Nov. 11 (Xinhua) -- Eli Fuller traverses the waters of Antigua's south shore like it was his backyard pool. He cuts left and right on his 45-foot speedboat the Xtreme, confidently dodging crosscurrents and coral reefs, saltwater spraying behind his silhouette.

The third generation Antiguan has been exploring this area for over two decades. Fuller's grandfather, who came to Antigua in 1941 as a United States vice-consul and opened the country's first hotel, making Fuller take his guests on day tours.

Now Fuller runs an eco-tour business and charges per person.

As he pulls back on Xtreme's throttle, the boat glides to a standstill over Cades Reef, a two-mile long wall of coral. But most of the reef is now a white skeleton of its former glory.

"It happened so quickly that you went from having what looked like an underwater jungle, like something you'd see in the Amazon forest, to being complete wreckage, like what you'd see at Ground Zero in New York," he said. "Just carnage."

In 2005, as much as 90 percent of the coral reefs in the Eastern Caribbean were destroyed bringing the worst year of coral bleaching and disease in Caribbean history. The reason could be a mixture of factors like warming waters and pollution, but more scientists are looking at Africa. But that shall be explained later. . . .

John Maginley, the minister of tourism, is in charge of the primary source of income for Antigua and Barbuda. He told Xinhua that tourism generates around 200 to 300 million U.S. dollars a year, roughly 65 percent of the nation's gross domestic product (GDP).

With fewer reefs to protect Antigua's valuable beaches from powerful storms, Maginley worries about his country's main source of income.

"Our motto in tourism is, 'The beach is just the beginning,'" he said. "And if we have a situation where beaches are being eroded, and the shoreline will be affected, things we have to offer to our tourism visitors are affected."

On Antigua's southwest coast on Crabb Hill beach, for example, OJ's Beach Bar has been dubbed by locals as OJ's Rock Bar because they had to put rocks along the shoreline just to stop the bar from falling into the sea.

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Wednesday, November 11, 2009

Help ocean giants

Goliath grouper, Naples, Florida, taken by Bryan Fluech/Marine Photobank

From NOAA's coral listserve:

Goliath grouper (Epinephelus itajara) is one of the last representatives of the marine megafauna that were once abundant in tropical and subtropical latitudes of the world's oceans. Critically endangered throughout its distribution range, goliath grouper (previously known as jewfish), have been protected in U.S federal and state waters since 1990 through a total fishing ban. After reaching commercial extinction, the species is now in a path towards recovery. Florida is one of the few places in the world, where we can still dive with these giants.

Powerful lobbies are pressuring politicians to relax the protected status of goliath grouper to re-open the fishery at some point. This is against scientists recommendations. In a meeting early December, the Florida Fish and Wildlife Conservation Commission will decide on whether to facilitate the process for a fishery re-opening or continue with the complete fishing ban and full protection.

The SCUBA diving community, conservationists and scientists are now lobbying so politicians will listen to the voice of reason. Please, consult the petition below, and consider adding your signature (you can also add your own comments). We hope to reach at least 1,000 signatures (more will even be better). - http://www.thepetitionsite.com/1/protect-goliath-groupers

Thank you for your time.You can find links to goliath grouper publications and a dedicated Endangered Species Research issue in my internet page. Also a short documentary film under "teaching."

Sarah Frias-Torres, Ph.D. http://independent.academia.edu/SarahFriasTorres

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Tuesday, November 10, 2009

International League of Conservation Photographers


The International League of Conservation Photographers: Trailer
from The WILD Foundation on Vimeo.



The ILCP is a project-driven organization. Our mission is to translate conservation science into compelling visual messages targeted to specific audiences. We work with leading scientists, policy makers, government leaders and conservation groups to produce the highest-quality documentary images of both the beauty and wonder of the natural world and the challenges facing it.

The unique set of skills, talent and years of field experience spent documenting delicate and complex environmental subjects as well as a real commitment to conserve the landscapes, people and wildlife in the places where they work, is what sets the photographers of the ILCP apart. From poaching to global warming, from habitat loss to cultural erosion, from sustainability to biological corridors, the work of conservation photographers covers the entire range of threats to biodiversity and is indeed a critical component in the conservation toolbox.

Our mission is to further environmental and cultural conservation through ethical photography.

We believe that awe-inspiring photography is a powerful force for the environment, especially when paired with the collaboration of committed scientists, politicians, religious leaders and policy makers. We plan to replace environmental indifference with a new culture of stewardship and passion for our beautiful planet.

Read more...
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Ed Blume, a volunteer for Centro Ecológico Akumal (CEA), moderates the blog. Anyone wishing to post can contact Ed at ed@ceakumal.org.

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