Navigation Links
Shellfish face an uncertain future in a high CO2 world
Date:5/26/2009

Overfishing and disease have decimated shellfish populations in many of the world's temperate estuarine and coastal ecosystems. Smithsonian scientists, led by Whitman Miller, ecologist at the Smithsonian Environmental Research Center in Edgewater, Md., have discovered another serious threat to these valuable filter feedersrising levels of atmospheric carbon dioxide that contribute to the acidification of open ocean, coastal and estuarine waters. Their findings are being published in the open-access, peer-reviewed journal PLoS ONE, May 27.

For shellfish and other organisms that have calcium carbonate shells and structures, the problem begins when atmospheric CO2 dissolves in seawater and creates carbonic acid that is then rapidly transformed into carbonate and bicarbonate ions in the water. Increased acidity tips the balance toward bicarbonate formation and away from carbonate. Less carbonate in the water means that shellfish have fewer building blocks to generate their shells. If the water is acidic enough, shells can even begin to dissolve.

"Estuarine and coastal ecosystems may be especially vulnerable to changes in water chemistry caused by elevated CO2 because their relative shallowness, reduced salinity and lower alkalinity makes them inherently less buffered to changes in pH than in the open ocean," said Miller. For many calcifying organisms, CO2-induced acidification poses a serious challenge because these organisms may experience reduced rates of growth and calcification that "when combined with other environmental stresses, could spell disaster."

Larval oysters are thought to be particularly susceptible to acidification since larvae produce shells made of aragonite, a crystalline form of calcium carbonate that is prone to erosion at low pH. Adult oysters continue to build shell but generate calcite, a more durable form of calcium carbonate. In Miller's study, the larvae of Eastern oysters (Crassostrea virginica) and Sum
'/>"/>

Contact: Rebecca Walton
rwalton@plos.org
44-122-346-3333
Public Library of Science
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Shellfish and inkjet printers may hold key to faster healing from surgeries
2. Pacific shellfish ready to invade Atlantic
3. Saltwater sleuths: Seeking clues to help determine the ages of fish and shellfish populations
4. Underwater microscope helps prevent shellfish poisoning along Gulf Coast of Texas
5. Dealing with taxonomic uncertainty for threatened and endangered species
6. Managing uncertainty important in ecological balance: ASU researcher
7. Uncertainty drives the evolution of cooperative breeding in birds
8. Preventing ear infections in the future: Delivering vaccine through the skin
9. Grasslands: The future of sustainable agriculture
10. Better water use could reduce future food crises
11. A glimpse of future GMES Sentinel-1 radar images
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/21/2014)... have developed a novel and versatile modeling strategy to ... new materials as well as for studying polyelectrolytes, including ... to model much larger and more complex polyelectrolyte systems, ... Li, lead author of a paper on the work ... Materials Science and Engineering. "This is a big step ...
(Date:8/20/2014)... a John and Rebecca Moores Professor of Biology and Biochemistry ... in the International Society for the Study of the Origin ... members two from the U.S., one from France and ... are elected every three years, and 36 have been named ... 20 countries, the ISSOL includes researchers from disciplines as varied ...
(Date:8/20/2014)... LAKE CITY Researchers at Huntsman Cancer Institute (HCI) at ... forms of the gene that encodes BCR-ABL, the unregulated ... According to the American Cancer Society, nearly 6,000 new ... Drugs already in use, called tyrosine kinase inhibitors (TKIs), ... They do not cure CML but control it in ...
Breaking Biology News(10 mins):Researchers develop models to study polyelectrolytes, including DNA and RNA 2UH professor named fellow by International Astrobiology Society 2Blueprint for next generation of chronic myeloid leukemia treatment 2
... for Free-Electron Laser Science have devised a novel way to boil ... concept, which has not yet been demonstrated in practice, could heat ... Celsius in just half a picosecond (a trillionth of a second). ... one picosecond is to a second what one second is to ...
... like Alzheimer,s, Parkinson,s and Creutzfeldt-Jakob disease. But amyloid ... the development of new composite materials for the ... even make objects invisible. Researchers from Chalmers ... about amyloid in an article published in the ...
... Caribou in southern and eastern Canada may disappear from most ... takes the toll on their habitat that scientists predict in ... Nature Climate Change . Scientists looked at reservoirs of ... to stable habitats. They found that caribou populations in the ...
Cached Biology News:Ultrafast heating of water -- This pot boils faster than you can watch it 2Ultrafast heating of water -- This pot boils faster than you can watch it 3Alzheimer substance may be the nanomaterial of tomorrow 2Climate change threatens genetic diversity, future of world's caribou 2
(Date:8/20/2014)... The 6th Annual Arrowhead Personalized ... October 29-30 in San Francisco, CA. This year’s conference ... researchers and clinicians focused on addressing and solving the ... the twelve years since the sequencing of the human ... with pharmacogenetic information in the label and molecular diagnostics ...
(Date:8/20/2014)... improve the health of your heart, researchers have discovered. ... a standard TENS machine like those designed to relieve ... the small raised flap at the front of the ... The stimulation changed the influence of the nervous system ... can drive failing hearts too hard. , Professor Jim ...
(Date:8/19/2014)... Piscataway, NJ (PRWEB) August 20, 2014 ... engineering and regenerative medicine is an inadequate vascular ... engineered constructs and decellularized tissues is critical for ... Researchers have attempted to mitigate deficiencies in vascularization ... including adding scaffold bioactivity, optimizing scaffold design and ...
(Date:8/19/2014)... , Aug. 19, 2014 A Geisinger ... been nominated for a Centers for Disease Control and ... a major public health concern. Joseph ... is one of a team of researchers nominated for ... C. Shepard Science Award for Data Methods and Study ...
Breaking Biology Technology:6th Annual Personalized and Precision Medicine Conference Bringing Together Thought Leaders to Discuss Clinical Implementation, Dx Reimbursement, Big Data, and Sequencing 2'Tickling' your ear could be good for your heart 2Vascularization in Tissue Engineering Highlighted at 12th New Jersey Symposium on Biomaterials Science 2Geisinger investigator nominated for federal award 2Geisinger investigator nominated for federal award 3
... Increase 53% and 52% Respectively ... ... CLRT ), a premier technology and services resource for,pathologists, oncologists and ... year ended December 31, 2007.,Revenue from continuing operations was $12.4 million ...
... ... presentations, SOUTH SAN FRANCISCO, Calif., March 31 ,Exelixis, Inc. ... company,s investigational compounds XL647, XL184, XL765 and,XL880 will be presented at the ... from May 30 to June 3, 2008 in,Chicago, Illinois. The clinical trial ...
... Medarex, Inc.,(Nasdaq: MEDX ) today announced ... undisclosed amount from its licensing partner, Novo Nordisk ... of an Investigational New Drug,application by Novo Nordisk ... Medarex,s UltiMAb(R) technology. Medarex may receive future,milestone payments ...
Cached Biology Technology:Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 2Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 3Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 4Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 5Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 6Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 7Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 8Clarient Announces Fourth Quarter and Year-End 2007 Financial Results 9Seven Abstracts Featuring Exelixis Compounds Accepted for Presentation at 2008 ASCO Annual Meeting 2Medarex to Receive Milestone Payment from Novo Nordisk 2
... (RNase III) from E. coli is an ... to dsRNA fragments that have 2-base, 3'-overhangs. ... dsRNA fragments of 12-15 bp. RNase ... canonical ribonucleotides as well as DuraScript™ RNA, ...
...
...
... to CRF The antibody ... CRF sequence that it was ... are found in the paraventricular ... in colchicine treated 4% FA ...
Biology Products: