. Earth Science News .




.
WATER WORLD
Tiny bubbles signal severe impacts to coral reefs worldwide
by Staff Writers
Miami FL (SPX) Jun 01, 2011

A new study of Papua New Guinea's "champagne reefs" in Nature Climate Change by the University of Miami, the Australian Institute of Marine Science and the Max-Planck Institute for Marine Microbiology in Germany concludes that ocean acidification, along with increased ocean temperatures, will likely severely reduce the diversity and resilience of coral reef ecosystems within this century. These reefs provide sobering illustrations of how coral reefs may look in 100 years if ocean acidification conditions continue to worsen. Credit: Katharina Fabricius/Australian Institute of Marine Science

A new study from University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science scientists Chris Langdon, Remy Okazaki and Nancy Muehllehner and colleagues from the Australian Institute of Marine Science and the Max-Planck Institute for Marine Microbiology in Germany concludes that ocean acidification, along with increased ocean temperatures, will likely severely reduce the diversity and resilience of coral reef ecosystems within this century.

The research team studied three natural volcanic CO2 seeps in Papua New Guinea to better understand how ocean acidification will impact coral reefs ecosystem diversity.

The study details the effects of long-term exposure to high levels of carbon dioxide and low pH on Indo-Pacific coral reefs, a condition that is projected to occur by the end of the century as increased man-made CO2 emissions alter the current pH level of seawater, turning the oceans acidic.

"These 'champagne reefs' are natural analogs of how coral reefs may look in 100 years if ocean acidification conditions continue to get worse," said Langdon, UM Rosenstiel School professor and co-principal investigator of the study.

The study shows shifts in the composition of coral species and reductions in biodiversity and recruitment on the reef as pH declined from 8.1 to 7.8. The team also reports that reef development would cease at a pH below 7.7.

The IPCC 4th Assessment Report estimates that by the end of the century, ocean pH will decline from the current level of 8.1 to 7.8, due to rising atmospheric CO2 concentrations.

"The seeps are probably the closest we can come to simulating the effect of man-made CO2 emissions on a coral reef," said Langdon. "They allow us to see the end result of the complex interactions between species under acidic ocean conditions."

The reefs detailed in this study have healthy reefs nearby to supply larvae to replenish the reefs. If pH was low throughout the region - as projected for year 2100 - then there would not be any healthy reefs to reseed damaged ones, according to Langdon.

The study titled "Losers and winners in coral reefs acclimatized to elevated carbon dioxide concentrations," was published in the June issue of the journal Nature Climate Change. The paper's co-authors include Katharina Fabricius Sven Uthicke, Craig Humphrey, Sam Noonan, Glenn De'ath and Janice Lough from the Australian Institute of Marine Science and Martin Glas from Max-Planck Institute for Marine Microbiology. The research was funded by the Australian Institute of Marine Science, the University of Miami, and the Max-Planck Institute of Marine Microbiology through the Bioacid Project (03F0608C).




Related Links
University of Miami Rosenstiel School of Marine and Atmospheric Science
Water News - Science, Technology and Politics

.
Get Our Free Newsletters Via Email
...
Buy Advertising Editorial Enquiries






. Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle



WATER WORLD
Philippines struggles under mountain of dead fish
Manila (AFP) May 30, 2011
Several lakeside towns in the Philippines on Monday were struggling to cope with mountains of rotting fish that were killed by a sudden drop in water temperatures at the weekend. The Bureau of Fisheries and Aquatic Resources said more than 750 tonnes of fish had died since Friday in Taal Lake near Manila, hitting several towns whose economies are heavily reliant on the fishing industry. ... read more


WATER WORLD
Japan's PM faces no-confidence motion

Haiti report shines light on rush to inflate death tolls

IAEA says Japan underestimated tsunami threat

Blast at Japan nuclear plant 'likely gas cylinder'

WATER WORLD
Researchers develop environmentally friendly plastics

Google given more time to reach book settlement

iPad challenge looms large at Asia IT show

Making materials to order

WATER WORLD
Experts create first legal roadmap to tackle local ocean acidification hotspots

Tiny bubbles signal severe impacts to coral reefs worldwide

Brazil approves huge Amazon power plant

Human impacts of rising oceans will extend well beyond coasts

WATER WORLD
Two Greenland Glaciers Lose Enough Ice To Fill Lake Erie

Trucks lose, ships win in warmer Arctic

Caltech-led team debunks theory on end of Snowball Earth ice age

Study reveals most biologically rich island in Southern Ocean

WATER WORLD
China, S. Korea ban Taiwan drinks over chemical

High risk of Parkinson's disease for people exposed to pesticides near workplace

Keeping Dairy Cows Outside is Good for the Outdoors

'Perfect storm' looms for world's food supplies: Oxfam

WATER WORLD
Top US official warns of 'heavy' hurricane season

Hurricane season starting with high US, Caribbean risk

Scientists warn of more quake danger in N.Z.

Iceland's Grimsvoetn volcano eruption over: official

WATER WORLD
Obama has 'deep concern' over Sudan forces in Abyei

US offers $14.5 million for Somalia food aid

Somalia war: Surreal twists and turns

Sudan slides toward another civil war

WATER WORLD
When it comes to warm-up less is more for athletes

Scientists trick the brain into Barbie-doll size

New level of genetic diversity in human RNA sequences uncovered

Standing up to fight


Memory Foam Mattress Review
Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
.

The content herein, unless otherwise known to be public domain, are Copyright 1995-2011 - Space Media Network. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement