Posted on December 12, 2014 by Bob Berwyn
Some corals are less sensitive to ocean acidification than others, according to a new study. Photo via NOAA.
Study say soft Gorgonian coral species can still calcify under elevated CO2 levels
FRISCO — Not all corals are equal when it comes to withstanding the ravages of global warming.
Some Caribbean soft corals, known as gorgonians, may be able to calcify and grow under elevated carbon dioxide concentrations. Those corals may be more resilient to the ocean acidification levels projected by the end of the 21st century than previously thought, according to a new study published in the journal Coral Reef. Continue reading
Filed under: biodiversity, climate and weather, coral reefs, Environment, global warming, ocean acidification | Tagged: climate change, coral reefs, global warming, ocean acidification, oceans | Leave a comment »
Posted on October 11, 2014 by Bob Berwyn
Study documents ‘climate refuge’ in Virgin Islands
Boulder brain corals were found in abundance under the mangroves and were healthy, while many of those in unshaded areas a short distance away were bleaching.
Photo Credit: Caroline Rogers, USGS.
FRISCO — Some coral species are finding a refuge of sorts from global warming by finding new habitat in the shade of red mangrove trees.
Scientists with the U.S. Geological Survey and Eckerd College documented discovery of the refuge in the U.S. Virgin Islands, where more than 30 species of reef corals were found growing in Hurricane Hole, a mangrove habitat within the Virgin Islands Coral Reef National Monument in St. John. Continue reading
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Posted on September 17, 2014 by Bob Berwyn
Coral growth is slowing dramatically along parts of the Great Barrier Reef. Photo courtesy NOAA.
Will the world’s coral reefs simply dissolve as oceans become more acidic?
FRISCO — Scientists monitoring the Great Barrier Reef said they’ve tracked a “perilous” 40 percent slowdown in coral growth rates since the 1970s.
The trend may be linked with increasing ocean acidification, according to the new study led by researchers with the Carnegie Institution for Science.
The researchers compared current measurements of the growth rate of a section of Australia’s Great Barrier Reef with similar measurements taken more than 30 years ago. Continue reading
Filed under: biodiversity, climate and weather, coral reefs, Environment, global warming, ocean acidification | Tagged: carbon dioxide, climate change, CO2, coral reefs, greenhouse gases, ocean acidification | 1 Comment »
Posted on September 10, 2014 by Bob Berwyn
Observations around the Florida Keys show a big jump in the average late-summer water temperature, leading to increased coral reef die-offs.
New USGS study documents dramatic increase in ocean temperatures around the Florida Keys
FRISCO — Even without a big ocean-warming El Niño event, coral reefs around the Florida Keys are being stressed by warmer water. Scientists say the number of bleaching events is going up as average sea surface temperatures in the region increase.
Just in the past few decades, average late-summer water temperatures near the Florida Keys were warmer by nearly 2 degrees Fahrenheit compared to a century earlier, according to a new study by the U.S. Geological Survey. Continue reading
Filed under: biodiversity, climate and weather, coral reefs, Environment, global warming | Tagged: coral reefs, Environment, Florida Keys, global warming | 2 Comments »
Posted on August 27, 2014 by Bob Berwyn
Widespread threats lead to “threatened” listing for 20 coral species under the Endangered Species Act. Photo courtesy NOAA.
Conservation and recovery plans will be crafted in partnership with coastal communities
FRISCO — Twenty types of coral in the Pacific and Caribbean will be listed as threatened under the Endangered Species Act, federal officials announced this week, citing declines of up to 90 percent in some species. Continue reading
Filed under: biodiversity, coral reefs, endangered species, Environment, global warming | Tagged: coral reefs, endangered species, Environment, global warming, oceans | Leave a comment »
Posted on July 19, 2014 by Bob Berwyn
Study findings to help inform coastal management
Dredging near coral reefs can lead to chronic disease and decline.
FRISCO — Along with the stress of global warming and the disappearance of reef-grazing fish, corals are also beset by the increasing pace of coastal development — specifically dredging — which can increase the frequency of diseases affecting corals.
Australian researchers with the ARC Centre of Excellence for Coral Reef Studies made their findings after studying a site near Barrow Island, off the West Australian coast, where an 18-month, 7-million cubic metre dredging project took place, developing a channel to accommodate ships transporting liquefied gas to a nearby processing plant. The site was in otherwise very good condition. Continue reading
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Posted on February 22, 2014 by Bob Berwyn
A coral reef at the Palmyra Atoll National Wildlife Refuge. Photo courtesy Jim Maragos/USFWS.
Consumers should choose products carefully
By Summit Voice
FRISCO — All that sunscreen you slather on at the beach may help you prevent sunburn, but it’s not, as long suspected, the best for coral reefs. Turns out that a chemical used in many sunscreens, along with soap, cosmetics and body fragrances, is highly toxic to corals.
Research by scientists at NOAA’s National Centers for Coastal Ocean Science shows that even very low concentrations of benzophenone-2, or BP-2, can quickly kill juvenile corals. The additive has been used in personal-care products since the 1960s to protect against the damaging effects of ultraviolet light. Continue reading
Filed under: biodiversity, coral reefs, Environment | Tagged: coral reefs, Environment, oceans, sunscreen | 1 Comment »