10 Jul 2012:
Corals Facing Open Ocean
More Vulnerable to Warming, Study Finds
U.S. scientists say coral reef systems exposed to the open ocean are most vulnerable to warming ocean temperatures
. In a new study, researchers at the University of North Carolina write that three distinct coral
In Fight to Save Coral Reefs,
Finding Strategies that Work
In four decades as a marine biologist, Nancy Knowlton
has played a key role in documenting the biodiversity of coral reefs and the threats they increasingly face. In an interview with Yale e360
, she highlights conservation projects that offer hope of saving these irreplaceable ecosystems.
zones located within the Mesoamerican Barrier Reef System in Central America — including the foreef (closest to the ocean), the nearshore (closest to the shore), and the backreef (directly behind the reef crest) — saw an increase in average summer sea surface temperatures from 1982 to 2008. But while they observed a decline in skeletal growth in corals facing the ocean during that period, coral growth rates in the other two zones remained relatively stable. According to their findings, published in the journal Nature Climate Change
, the ocean-facing corals were more vulnerable to warming conditions because historically they had experienced cooler and more stable seawater. “However, because backreef and nearshore coral colonies have historically been exposed to warmer and more variable seawater temperatures, they seem to be less affected,” said Karl Castillo, a postdoctoral researcher at UNC and lead author of the study. The scientists say the findings could help researchers better understand how corals are likely to respond to future warming.
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Yale Environment 360
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Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
Ugandan scientists monitor the impact of climate change on one of Africa’s most diverse forests and its extraordinary wildlife. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
video goes onto the front lines with Colorado firefighters confronting deadly blazes fueled by a hotter, drier climate. Watch the video.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.