HOME >> BIOLOGY >> NEWS
Increasing carbon dioxide threatens coral reefs

Researchers at Columbia University's Biosphere 2 Center have determined that increasing levels of carbon dioxide in the Earth's atmosphere may cause more harm to marine coral reef communities than previous research had indicated. Dr. Christopher Langdon of Columbia's Lamont Doherty Earth Observatory and his research team believe that coral growth could be reduced by as much as 40 percent from pre-industrial levels over the next 65 years.

The team found no evidence that reef organisms are able to acclimate after prolonged exposure to the reduced carbonate levels. "This is the first real evidence that increasing atmospheric carbon dioxide levels have a negative impact on a major Earth ecosystem," says Langdon, whose research will be published in the June edition of Global Biogeochemical Cycles, an American Geophysical Union journal that covers global environmental change.

Langdon's team is investigating the impact of changing seawater chemistry on coral reef calcification rates. By mid-century, increasing levels of atmospheric carbon dioxide, caused primarily by the burning of fossil fuels, are expected to reduce by 30 percent the carbonate ion concentration of the surface ocean. When Langdon changed the carbonate concentration in the Biosphere 2 ocean to that projected level, he observed significant reduction in calcification rates for the coral and coralline algae.

Langdon believes the results of his research have some important implications. Coral reefs are natural breakwaters protecting tropical islands and other coastal areas from beach erosion. "While some terrestrial ecosystems may actually benefit from elevated carbon dioxide levels, that does not appear to be the case for shallow marine ecosystems like a coral reef," says Langdon. The impacts are much greater than previously believed, leading to increasing vulnerability of many reefs to other man-caused sources of stress, like over-fishing or pollution, he says.

The project is underwa
'"/>

Contact: Harvey Leifert
hleifert@agu.org
202-777-7507
American Geophysical Union
15-May-2000


Page: 1 2

Related biology news :

1. Increasing international insect threat to stored food
2. Increasing ozone over the Atlantic ocean
3. Increasing carbon dioxide relieves drought stress in corn, researchers say
4. Increasing biodiversity is not always best
5. Increasing nitrogen in Earths soils may signal global changes, say U. of Colorado researchers
6. Increasing Carbon Dioxide Threatens Tropical Coral Reefs
7. Bacteria Becoming Increasingly Resistant To Antibiotics, But New Vaccines Are On The Horizon
8. Increasing Frequency Of El Nino Takes Toll On Northern Hemispheres Only Penguins
9. Increasing Threat Of Extinction For Amphibians? Scientists To Seek Answers At NSF Workshop
10. The Environmental Consequences Of Increasing Food Production
11. Potential for enhanced sequestration of carbon in soils supports evaluations

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/18/2020)... ... July 16, 2020 , ... A study has been published ... Neoasis™ active noise control device to attenuate typical noises in a simulated neonatal ... the alarm sounds from patient monitors, ventilators and other bedside devices that would ...
(Date:7/4/2020)... ... July 03, 2020 , ... Aesthetics Biomedical (ABM), a leading ... for not only the products and treatments developed, but also the dedicated team ... All the brands built by ABM have received several honors already for 2020, ...
(Date:7/1/2020)... ... July 01, 2020 , ... ... solutions for glioblastoma—the most common and aggressive adult brain cancer—announced today the appointments ... Senior Fellows are charged with supporting the organization’s initiatives and overall vision. , ...
Breaking Biology News(10 mins):
(Date:7/7/2020)... (PRWEB) , ... July 06, 2020 , ... ... Practices Awards. Entries from Roche, Eli Lilly, Bristol-Myers Squibb, the University of Chicago, ... 2003, Bio-IT World has hosted an elite awards program, highlighting outstanding examples of ...
(Date:7/1/2020)... ... June 29, 2020 , ... ... procured purchasing contracts to its membership, recently named BioFit Engineered Products ... the opportunity to purchase ergonomic seating, cafeteria tables, book trucks and carts at ...
(Date:6/28/2020)... ... 2020 , ... The Indoor Lab, a leading provider of sensor solutions for ... types to ensure cleanliness, distancing and occupancy with its patent pending WipeAway™ technology using ... will provide a health performance index system that scores all aspects of compliance similar ...
(Date:6/28/2020)... ... June 25, 2020 , ... Lumeda Inc. ... today announced the company has entered a license agreement with Roswell Park Comprehensive ... globally exclusive rights to Roswell Park intellectual property surrounding a novel medical device ...
Breaking Biology Technology:
Cached News: