02 Apr 2012:
Some Corals More Resilient
To Increased Acidification, Study Shows
Some coral species may be better able to cope with the increasingly acidic condition of the world’s oceans
than previously believed, a new study says. Writing in the journal Nature Climate Change
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.
international team of scientists describes an internal mechanism by which many coral species are able to buffer against the rising pH levels and still form healthy skeletons. According to the scientists, coral species with skeletons made of aragonite — including the well-known Porites
corals — contain molecular “pumps” that enable them to regulate internal acid balance. Corals that form calcite skeletons, however, do not have this mechanism. Also, the researchers found that coralline algae — which they describe as the “glue” that holds coral reefs together — remain vulnerable to ocean acidification. In another study, scientists at the Scripps Institution of Oceanography have documented how temperatures in the upper regions of the world’s oceans (to depths of 700 meters) have increased by an average of .59 degrees F
(.33 degrees C) over the last 140 years, with the greatest temperature increases occurring at surface levels, where temperatures rose by an average of 1.1 degrees F.
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The 2015 Yale e360 Video Contest winner documents a Northeastern town's bitter battle over a wind farm. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
A 2015 Yale e360 Video Contest winner captures stunning images of wild salmon runs in Alaska. 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.
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