Navigation Links
Sinking organic materials produce carbon dioxide
Date:12/8/2010

Researchers from the Max Planck Institute for Marine Microbiology in Bremen, Germany and the Massachusetts Institute of Technology (M.I.T.) in Cambridge, Massachusetts have found a remarkable effect while studying how marine particles sink, which could affect the way scientists assess global carbon fluxes. Their question - How fast does organic material and debris clumped together forming porous particles settle to the sea floor? Microbes colonizing these particles degrade the organic matter and release carbon dioxide back to the water. The downward velocity of the particles determines the amount of carbon exported to the deep sea. The results from this study are now presented in the Proceedings of the National Academy of Sciences (DOI: 10.1073/pnas.1012319108).

Structured like sponges, the marine particles are porous aggregates that are mostly void and made of water to 95% or more. Because the world's oceans are stratified due to temperature and/or salinity, water density increases with depth. On their way down to the deep ocean, marine aggregates can reach a depth where they approach neutral buoyancy, stopping in their descent until the exchange of low-density water and heavier ambient water allows settling to resume. Kolja Kindler, a scientist at the Max Planck Institute for Marine Microbiology and the Massachusetts Institute of Technology, points out that although thin layers of marine aggregates have often been observed in nature, this effect has been previously neglected in particle transport models.

In this study by Kindler and colleagues, the results from laboratory experiments and a mathematical model demonstrate this effect for the first time. As the particles are impermeable to flow, the only means of exchanging water is by diffusion. As a result, the larger the size of the aggregates, the more time they spend in the stratified layer.

Arzhang Khalili from the Max Planck Institute for Marine Microbiology says, "L
'/>"/>

Contact: Arzhang Khalili
akhalili@mpi-bremen.de
49-421-202-8636
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Whale sharks do the math to avoid that sinking feeling
2. WSU researchers taking sustainability of organic farming to new level
3. Is organic farming good for wildlife? It depends on the alternative
4. On organic coffee farm, complex interactions keep pests under control
5. Balanced ecosystems seen in organic ag better at controlling pests
6. Organic pesticides not always greener choice, study finds
7. Delineating primary and secondary organic carbon in neoproterozoic glacial sediments
8. New model is proposed to explain absence of organic compounds on surface of Mars
9. The Reaxys Ph.D. Prize awards innovative research in organic, organometallic and inorganic chemistry
10. Organic solids in soil may speed up bacterial breathing
11. Can organic labels backfire?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sinking organic materials produce carbon dioxide
(Date:7/13/2015)... , Jul. 13, 2015 NXT-ID, Inc. ... a biometric authentication company focused on the growing ... filed provisional patent 62/188684 for BEHAVIORAL-DIRECTED ... another new convenient and secure method to make ... innovative payment methods, introduced with its groundbreaking voice-direct ...
(Date:7/8/2015)... 2015 Summary Pancreatic cancer is the ... fatal, with a mortality rate of 10.9 deaths per ... cancer patients has highlighted a significant need for new ... met by the current market. A highly active ... varying molecule types and mechanisms of action, which provides ...
(Date:7/7/2015)... VIEW, Calif. , July 7, 2015 /PRNewswire/ ... biometrics market, Frost & Sullivan recognizes Credence ID, ... Sullivan Entrepreneurial Company of the Year Award. ... suite to aid in its mission of offering ... under-recognized populations globally. As Credence ID was formed ...
Breaking Biology News(10 mins):NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 3Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 2Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 3Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 4Frost & Sullivan Acknowledges the Distinctive Customer-focused Attributes of Credence ID's Mobile Biometric Product Suite 5
... 2009 issue of the Journal of General Physiology ... University of British Columbia, Vancouver) and colleagues that explores ... using in vivo nonsense suppression technology. The study will ... According to Riccardo Olcese (UCLA) in a commentary accompanying ...
... DURHAM, N.H. Two University of New Hampshire ... (NSF) Faculty Early Career Development (CAREER) grants. Vaughn ... biomedical sciences received $1 million to better understand ... students in data collection. Christopher White of the ...
... Mountain goats are no exception to the general ... healthier offspring. But University of Alberta researcher David Coltman ... mountain goats think twice about their romantic partners. ... taking the eligible females for themselves. The larger males ...
Cached Biology News:2 UNH faculty receive $1.4M in CAREER grants from NSF 2
(Date:7/30/2015)... ... July 30, 2015 , ... Leading regenerative veterinary medicine company, ... canine osteoarthritis stem cell product, currently under development for FDA approval. The product ... marketed in the US by Aratana. This product, termed AT-016, is an allogeneic ...
(Date:7/30/2015)... 30, 2015 Ascendis Pharma A/S (Nasdaq: ... its innovative TransCon technology to address significant unmet ... a six-month Phase 2 study to evaluate the ... in 53 treatment-naïve, pre-pubertal children with growth hormone ... pleased with the top-line results from our Phase ...
(Date:7/30/2015)... ... July 30, 2015 , ... GEA's Pony™ NS2006L ... operation up to 1500 bar. The sanitary design gauge of the NS2006L is ... , The Pony™ NS2006L homogenizer is an ideal solution for the processing of ...
(Date:7/29/2015)... US-Australian drug discovery company, Novogen Limited (ASX: ... committed to progressing its ground-breaking technology platforms to Phase ... ensure the Company delivers the best value for shareholders. ... , said the Company currently had an extensive program ... programs and academic partnerships and initiatives, and he was ...
Breaking Biology Technology:VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 2VetStem Biopharma Successfully Completes Large Milestone Efficacy Study for its Flagship Canine Osteoarthritis Stem Cell Product 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 5Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 6Ascendis Pharma A/S Announces Positive Top-line Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 7GEA Announces the Pony™ NS2006L… a Self-contained, High Pressure Lab Homogenizer for Product Development Ensuring Maximum Efficiency and Safety 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 2Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 3Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 4Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 5Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 6Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 7Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 8Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 9Newly Appointed Acting CEO Outlines Immediate Plans for Novogen 10
... Reagents to ... Advance Cancer Research, NEWARK, ... ) -- a leader in providing advanced antibody,products and services ... by Science Applications International Corporation - Frederick,(SAIC-F), to develop monoclonal ...
... 7 at 1:45 PM, DALLAS, April 3, 2008 ... digital health research at ATA 2008 at the,Washington State ... Harry will highlight findings from Private Insurance and ... insurance industry featuring,interviews with twenty senior executives from the ...
... Ratcliff, the,award-winning architecture, planning and interiors firm, master ... tower,accompanied by a 767-stall parking garage and 20,000-square-foot ... Walnut Creek Campus. The Thomas J.,and Muriel T. ... will add,230 private and six semi-private rooms, increasing ...
Cached Biology Technology:Strategic Diagnostics Inc. Selected as Key Supplier to SAIC-F and the National Cancer Institute for the Development of a Comprehensive Portfolio of Antibodies for Use in Cancer Research 2Strategic Diagnostics Inc. Selected as Key Supplier to SAIC-F and the National Cancer Institute for the Development of a Comprehensive Portfolio of Antibodies for Use in Cancer Research 3Parks Associates' Digital Health Analyst to Present Latest Research and Forecasts at ATA Show 2Ratcliff Designs Hospital of the Future for John Muir Medical Center - Walnut Creek Campus 2Ratcliff Designs Hospital of the Future for John Muir Medical Center - Walnut Creek Campus 3
Standard 2" or 3" Plastic can be ordered with 81 or 100 cell dividers. Mini 2" Plastics Boxes come standard with 25 cell dividers. Plastic boxes can also be ordered with corresponding freezer racks...
Ultra Pure Grade. Used in conjunction with IPTG to identify bacterial colonies that contain recombinant plasmids by blue/white selection. X-Gal forms an intense blue precipitate in the presence of be...
Request Info...
4-Hydroxy-3-nitrophenylacetyl hapten is conjugated to KLH (Keyhole Limpet Hemocyanin) lysine through amide bonds....
Biology Products: