Ocean Acidification
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What's the fuss about acidic oceans?

What's the fuss about acidic oceans? | Ocean Acidification | Scoop.it
We all know that increased carbon dioxide levels affect our atmosphere, but what impact are they having on our oceans?...
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Acid oceans harm more species | Climate News Network

Acid oceans harm more species | Climate News Network | Ocean Acidification | Scoop.it

The chemistry of the oceans is changing. And it isn’t just the corals and the baby oysters that are unhappy. It makes juvenile rockfish really anxious, and it upsets the digestion of sea urchins.


The pH (a measure of acidity – the lower the pH, the more acid the water) of the planet’s oceans is dropping rapidly, largely because the carbon dioxide levels in the atmosphere are increasing. Since carbon dioxide dissolves in water to form carbonic acid, the seas are responding to global change.


The first and clearest victims are likely to be the corals, which are adapted to a specific value of pH in the oceans, but there have also been problems reported by oyster farmers.


Now Martin Tresguerres of the University of California, San Diego reports in the Proceedings of the Royal Society B that at least one species of juvenile fish responds badly to the changes in ocean chemistry.


There is a natural aspect to ocean acidification – submarine volcanoes discharge carbon dioxide and turn the deep seas around them to a kind of fizzing champagne, and upwelling ocean currents can occasionally deliver a stressful level of lower pH sea water to blight fishing waters.


But Tresguerres reports that he and colleagues subjected young Californian rockfish to the kind of water chemistry predicted as atmospheric carbon levels rise, and then measured their behaviour in response to changes of light in the aquarium, and to an unfamiliar object in the tank.


Click headline to read more--


Via Chuck Sherwood, Senior Associate, TeleDimensions, Inc
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Ocean Acidification: The Other Carbon Dioxide Threat | Video

When carbon dioxide is absorbed by the ocean, the water's acid level rises. If this level gets too high, some sea creatures that build protective shells can'...
Lisa Trundley-Banks's insight:

A short but accurate and interesting video that gives a good overview of the issues.

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Carbon dioxide is 'driving fish crazy'

Carbon dioxide is 'driving fish crazy' | Ocean Acidification | Scoop.it
Rising human carbon dioxide emissions may be affecting the brains and central nervous system of sea fishes with serious consequences for their survival, an international scientific team has found.

Via Alan Yoshioka
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A fascinating article - a must read.

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http://www.scientificamerican.com/podcast/episode/some-coral-should-produce-shells-in-acidifying-ocean/

Can coral survive ocean acidification? There’s some #OceanOptimism on the ocean acidification front. New studies... http://t.co/8tEnN0ONiQ
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A podcast - short but good!

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Life in Future Acidic Seas

Some rare undersea volcanic vents that emit carbon dioxide -- which makes the water around them more acidic -- have given Stanford researchers a look at how ...
Lisa Trundley-Banks's insight:

This research has highlighted some interesting data. Not everything is killed by increased ocean acidity.

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Jumps in ocean acidity put coral in more peril

Jumps in ocean acidity put coral in more peril | Ocean Acidification | Scoop.it

Ocean acidification – where the ocean becomes less alkaline as it absorbs excess CO2from the atmosphere – has been described as the evil twin of global warming. Yet, remarkably, it is only over the past decade that scientists have started to recognise the very real threat it poses to coral reefs and other marine ecosystems.

 

As late as 2004, a survey conducted among coral reef scientists revealed ocean acidification was ranked 36th out of 39 identified threats to coral reefs, well below other threats such as tourism, scientific research and the aquarium trade.

 

Fast-forward to 2013 and it is widely recognised that ocean acidification is becoming one of the top threats to coral reefs. The surface ocean has already taken up approximately one-quarter of the anthropogenic CO2 emitted into the atmosphere, leading to increasing acidity.

 

Atmospheric CO2 will only increase from here, so the impacts of these chemical changes to coral reef organisms and ecosystems in the future are likely to be significant.

 

Worryingly, new research suggests that we may still be underestimating the size of the impact and how soon irreversible damage could occur.


Via David Rowing
Lisa Trundley-Banks's insight:

A great article that explains the issue in an easy to follow format.

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CO2 and our coral reefs

Professor Malcolm McCulloch is researching the variation in carbon dioxide over the past several hundred years. His team of scientists are examining ocean wa...
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This is an excellent short video that looks at the effects od o2 and how it is measured.

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Reef decalcification under business-as-usual CO2 emission scenarios - Sophie Dove

Presentation given at the ARC Centre of Excellence for Coral Reef Studies 2013 Symposium: Coral Reefs in the 21st Century.
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This is a bit dry and academic but some of the data may be of use. good luck!


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Cooling ocean temperature could buy more time for coral reefs

Cooling ocean temperature could buy more time for coral reefs | Ocean Acidification | Scoop.it
Limiting the amount of warming experienced by the world's oceans in the future could buy some time for tropical coral reefs, say researchers.

Via Kathy Dowsett
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The above story is based on materials provided by University of Bristol.

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Acidifying oceans dramatically stunt growth of already threatened shellfish, research finds

Acidifying oceans dramatically stunt growth of already threatened shellfish, research finds | Ocean Acidification | Scoop.it
New research shows that global warming and its effects -- in particular, ocean acidification -- have descended upon shellfish reefs, particularly those formed by the Olympia oyster.
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Our Ocean Conference: Ocean Acidification

Panel on Ocean Acidification - moderated by Scott Doney, Woods Hole Oceanographic Institution - at the Our Ocean Conference at the U.S. Department of State o...
Lisa Trundley-Banks's insight:

This is brilliant - a conference of specialists from all different aspects of the problems. School children attending and others took part via the internet. Maybe WATCH FIRST!

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Intensifying ocean acidity from carbon emissions hitting Pacific shellfish industry

Intensifying ocean acidity from carbon emissions hitting Pacific shellfish industry | Ocean Acidification | Scoop.it
For more than a century, Bill Taylor's family has used the calm, protected waters of Puget Sound to raise oysters, planting billions of larvae in underwater beds and then harvesting them to ship to some of the finest restaurants in the world.
Lisa Trundley-Banks's insight:

A very further article that also investigates the wider implications of the problem.

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Worsening ocean acidification threatens Alaska fisheries

Worsening ocean acidification threatens Alaska fisheries | Ocean Acidification | Scoop.it
Economic risks, data gaps highlighted (RT @ClimateNow: Science: Worsening ocean acidification threatens Alaska fisheries @sciencemagazine http://t.co/qdCWAQh12A #climate #Alaska)...

Via Aquaculturedirectory
Lisa Trundley-Banks's insight:

An excellent article that explains the impact of ocean acidification on fisheries.

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Pacific Oceanscape

Pacific Oceanscape | Ocean Acidification | Scoop.it
The Pacific Oceanscape’s 30,000 islands and islets face rising sea levels, ocean acidification and depleted fish stocks. Conservation International is working to protect the region's livelihoods, biodiversity and cultural value.

Via Wildlife Defence
Lisa Trundley-Banks's insight:

An interesting website - looks at solutions. Maybe favours results for the fish stocks as opposed to ocean acidification.

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Ocean Acidification Threatens Sea Life

The world's seafood supply could be in jeopardy. Why? Ocean acidification. It's the process in which the pH level in seawater is lowered through the absorpti...
Lisa Trundley-Banks's insight:

This very short news item introduces the idea of carbonic acid and looks at the devastation to shell fish.

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Is ocean acidification an open-ocean syndrome? Understanding anthropogenic impacts on seawater pH

Is ocean acidification an open-ocean syndrome? Understanding anthropogenic impacts on seawater pH | Ocean Acidification | Scoop.it
Ocean acidification due to anthropogenic CO2 emissions is a dominant driver of long-term changes in pH in the open ocean, raising concern for the future of calcifying organisms, many of which are present in coastal habitats.

Via Amocean
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This is a blog - but from a respected writer who has written the book!!


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Acidic Oceans: Why Should We Care? - Perspectives on Ocean Science - YouTube

The ocean absorbs almost half of the carbon dioxide emitted by human activities, changing its chemistry in ways that may have significant effects on marine e...
Lisa Trundley-Banks's insight:

This is a lecture from Andrew Dickson who is a specialist in CO2 and its effects on seawater and oceans. Again, very academic but he does have all the facts.

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Coral Reefs in Danger - ABCNews

The world's coral reefs are in danger primarily from global warming and the increase of atmospheric carbon dioxide.
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This gives some good background information and two scientists are interviewed. Great as a place to start your investigation.

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Ocean warming and acidification deliver double blow to coral reefs

Ocean warming and acidification deliver double blow to coral reefs | Ocean Acidification | Scoop.it
Great Barrier Reef coral assemblages Eulinky/Flickr The dual threats of ocean acidification and anthropogenic warming have the potential to wreak havoc on marine life over the coming decades.

Via Thomas Faltin
Lisa Trundley-Banks's insight:

This has appeared in several science magazines so it appears to be a reliable article.

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Shayna and Kayla's curator insight, October 3, 2013 12:51 PM

This represents the geography category. It is in this category because this article explains how the Great Barrier Reef of Australia is changing due to ocean warming.