The Blog Aquatic

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The Blog Aquatic

News, opinions, photos and facts from Ocean Conservancy

About Sarah Cooley

Sarah Cooley, Ph.D. joined Ocean Conservancy as a Science Outreach Manager in the Ocean Acidification program in January. Previously, she was a research scientist at Woods Hole Oceanographic Institution in Woods Hole, Massachusetts.

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Ocean Acidification Wrecks Sharks’ Smellovision

Posted On August 20, 2014 by

Scarier than any movie shark that can smell a drop of blood miles away (they can’t, by the way) is this week’s news about sharks’ sense of smell. A team of Australian and American scientists has just shown that smooth dogfishes (also called dusky smooth-hound sharks) can’t smell food as well after living in ocean acidification conditions expected for the year 2100. These “future” sharks could correctly track food smells only 15% of the time, compared to a 60% accuracy rate for unexposed sharks.  In fact, the acidification-exposed sharks even avoided food smells!

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What Does Ocean Acidification Mean for our Coasts?

Posted On August 7, 2014 by

This post is a collaboration between Sarah Cooley, Ph.D. (Ocean Conservancy) and Meredith White, Ph.D. (Bigelow Laboratory for Ocean Sciences).

As we dig deeper into how ocean acidification will affect our oceans, many scientists are also starting to talk about how it affects our coasts. This is a new focus for scientists and one ripe for new learning. In this post, we will give you a window into the coastal factors that are driving acidification and the solutions at hand.

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Alaska in the Spotlight: Supporting Communities Facing the Big Risks From Ocean Acidification

Posted On July 29, 2014 by

The total risk of Alaska’s boroughs and census areas from ocean acidification. Red areas are at highest risk, while blue areas are at lowest risk. Population size (circles), commercial harvest value (dollar sign size), and subsistence fishing significance (fish icon size) contribute to the total risk. Reprinted from Progress in Oceanography.

We know that some people will be more at risk than others as a result of ocean acidification. We have seen this with oyster growers in the Pacific Northwest.  Scientists are now trying to determine what puts certain regions at greater risk than others from ocean acidification. Before I came to Ocean Conservancy, I helped lead a study on this question for Alaska, and it’s just been published in Progress in Oceanography this week.

My coauthors and I found that many of southwest and southeast Alaska’s boroughs and census areas (similar to counties or parishes in other states) face social and economic risk from ocean acidification – namely, many of the foods they eat and sell for income, all coming from the sea, are threatened by changes in the ocean’s chemistry.

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A Modest Pledge Makes a Big Difference for Ocean Acidification Research and Collaboration

Posted On June 25, 2014 by

 

The right-hand end of the long, low pinkish building across the harbor houses the International Atomic Energy Agency Laboratory in La Condamine, Monaco, which hosts the Ocean Acidification International Coordination Centre.

Despite this week’s excited headlines about ocean research and conservation during Secretary Kerry’s “Our Oceans” conference, you still might have missed Prince Albert of Monaco’s Monday announcement that the U.S. State Department and Department of Energy have pledged a total of $640,000 to the Ocean Acidification International Coordination Centre (OA-ICC), based at the International Atomic Energy Agency’s (IAEA’s) Monaco lab.

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Connecting the Head and the Heart: Taking Action on Ocean Acidification

Posted On May 1, 2014 by

Even though ocean acidification is a pretty young issue, scientists and journalists already have developed two distinct storylines about it. Scientists start with the details and describe the impacts of ocean acidification last. Journalists put the impacts up front and fill in the details where they fit in. But to create long-lasting action around ocean acidification, we need to connect the two approaches in a new way. Here at Ocean Conservancy, we’re working on exactly that.

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Ocean Acidification on the International Stage

Posted On April 4, 2014 by

The Intergovernmental Panel on Climate Change released a major report this week, addressing ocean acidification head on for the first time.  Ocean acidification is just as big a problem as severe storms, droughts, heat waves, wildfires, crop failures, disease and ocean circulation changes that are driven by global temperature rise. Just as with these other threats, the need for solutions is urgent. The good news is that there are already solutions at hand – all that’s needed is leaders willing to push for them.

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Youngsters Need Energy to Grow

Posted On February 26, 2014 by

There’s a shift happening in the way scientists are thinking about how ocean acidification affects marine creatures. Originally, when researchers in the Southern Ocean watched the shells of tiny marine snails dissolve in high-carbon dioxide water, they suspected that similar animals with calcium carbonate shells and skeletons would most likely be harmed by ocean acidification. After all, this made intuitive sense: Ocean acidification means there is more carbon dioxide in the water, which lowers the water’s pH. All of this decreases the amount  of carbonate ions in the ocean—the chemical building blocks found in animals’ shells. Wouldn’t decreases in these building blocks rob animals of the very things they need to build their shells?

Ocean acidification biological research has looked at this “building blocks” hypothesis for a while. Many excellent studies have shown that time after time, decreases in seawater carbonate ion levels are associated with decreases in shell building by corals, plankton, oysters, and more. But that clear relationship doesn’t hold for crabs and lobsters, even though they too have calcium carbonate in their shells. And different shell formers respond to different degrees of change. What’s going on?

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