Navigation Links
Newly discovered ocean plume could be major source of iron
Date:8/19/2013

n indicator of vent activity, have found little coming from mid-Atlantic vents, and researchers have assumed that means the vents spew little iron as well.

So Saito and his colleagues were surprised by what their samples revealed when later studied in the lab. Once filtered and analyzed, some of the seawater showed unexpectedly high levels of iron and manganese. When Abigail Noble, then a WHOI graduate student, and Saito plotted the sites where the iron-rich samples were taken, they realized the samples formed a distinct plumea cloud of nutrients ranging in depth from 1,500 to 3,500 meters that spanned more than 1,000 km of the South Atlantic Ocean.

"We had never seen anything like it," Saito says. "We were sort of shockedthere's this huge bull's-eye right in the middle of the South Atlantic Ocean. We didn't quite know what to do with it, because it went contrary to a lot of our expectations."

The plume's ratio of iron to helium was 80-fold higher than ratios reported for faster-spreading ridges in the southeastern Pacific Ocean.

The serendipitous discovery casts doubt on the assumption that slow-spreading ridges are iron-poor, and it raises questions about the use of helium as an indicator for iron flux in hydrothermal vents, Saito says.

"We've assumed that low helium means low iron, and our study finds that that's not true," Saito says. "There's actually quite a lot of iron coming out of these slow-spreading regions in the Atlantic, where people thought there would be little to none."

And that has profound implications, because iron is a critical element for ocean life. Iron is known to spur the growth of phytoplankton in many marine habitats, especially those important in the ocean's carbon cycle, which, in turn, impacts atmospheric carbon dioxide levels and Earth's climate. Because more than half the world's seafloor ridges are slow-spreading, the team's discovery suggests there may be far more iron from the
'/>"/>

Contact: Media Relations Office
media@whoi.edu
508-289-3340
Woods Hole Oceanographic Institution
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Newly released FDA draft guidelines for biosimilar drugs to be discussed at conference
2. Scripps Research discoveries lead to newly approved drug for infant respiratory distress syndrome
3. Newly discovered foot points to a new kid on the hominin block
4. Newly found protein helps cells build tissues
5. Scientists advance field of research with publication of newly validated method for analyzing flavanols in cocoa
6. Key proteins newly discovered form and function may provide novel cancer treatment target
7. Newly discovered breast milk antibodies help neutralize HIV
8. Newly discovered dinosaur implies greater prevalence of feathers
9. U of M researchers: Newly discovered genetic markers could signal colon cancer development
10. ORNLs newly licensed neutron detector will advance human disease research
11. Newly discovered letters and translated German ode expand Texas link to infamous Bone Wars
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... Research and Markets ( http://www.researchandmarkets.com/research/wxdglm/global_wearable ) ... Wearable Technologies Market and Applications, Opportunities, Industry Analysis, ... 2014-2020" report to their offering. , ... can be worn on the user,s body and ...
(Date:12/22/2014)... , Dec. 22, 2014 Research and Markets ... of the "The Global Watermarking and Fingerprinting ... http://photos.prnewswire.com/prnh/20130307/600769 This ... media watermarking and fingerprinting markets. Watermarking aims to ...
(Date:12/19/2014)... LAS VEGAS , Dec. 18, 2014   LaunchKey ... built for the post-password and Internet of Things era, ... seed funding. The venture round was led by Metamorphic ... Capital, Rimrock Venture Partners, VegasTechFund, and others.  LaunchKey has ...
Breaking Biology News(10 mins):Global Wearable Technologies Market and Applications, Opportunities, Industry Analysis, Segmentation, Size, Growth, Share, Overview, Trends and Forecast 2014-2020 2The Global Watermarking and Fingerprinting Markets 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3
... Microbial Genomes (IMG) data management system, a resource provided ... has now been released. Hosted by the U.S. Department ... built a popular following as reflected in the overwhelming ... full. DOE JGI has added a fall session, September ...
... Copenhagen, 5 December 2007 - If you needed to ... a fish from Fiji, would you know where to ... specimens from a particular time or place right now ... Biodiversity Information Facility (GBIF), Biodiversity Information Standards (TDWG) and ...
... climate change, high energy prices, globalization, and urbanization ... and consumption, according to a new report by ... a result, global food demand and prices are ... of poor people in developing countries. The report, ...
Cached Biology News:GBIF making the search for biodiversity research resources easier 2Rising food prices threaten world's poor people 2Rising food prices threaten world's poor people 3Rising food prices threaten world's poor people 4
(Date:1/22/2015)... The laboratory information management systems market is ... of technological advancements due to factors such as rising ... integrate healthcare systems, and increasing government support for adoption ... Key players in the market focus on technological advancements ...
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently was invited to ... on probiotics in San Diego, CA. , The Scripps ... health care professionals. This year’s pre-conference seminar was held on ... Dr. Leyer spoke about the emerging topics and science in ...
(Date:1/22/2015)... 2015   Cypher Genomics, Inc., the leading ... SQNM ), the leading molecular diagnostics company, ... noninvasive prenatal tests (NIPT). Through this agreement, Sequenom ... to advance analysis of clinically-relevant fetal sub-chromosomal variants ...
(Date:12/24/2014)... Dec. 24, 2014  United Therapeutics Corporation (NASDAQ: ... MDT ) has submitted a pre-market approval application ... the use of Medtronic,s SynchroMed ® II implantable ... use with United Therapeutics, Remodulin ® (treprostinil) Injection ...
Breaking Biology Technology:Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 4Cypher Genomics and Sequenom Announce Development Agreement 2Cypher Genomics and Sequenom Announce Development Agreement 3Cypher Genomics and Sequenom Announce Development Agreement 4United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4
... , April 22 As evidence of ... lifetime of physical activity, Smith & Nephew ( SNN, ... unprecedented testing on its VERILAST technology for knee replacement ... the company,s LEGION™ knee replacement, VERILAST technology produced an ...
... YORK and SCOTTSDALE, Ariz. , April ... NBS ), an international biopharmaceutical,company with operations in the ... wholly owned subsidiary of IR BioSciences Holdings, Inc.,(OTC Bulletin ... a,Collaborative Research Agreement, focused on the development of an ...
... ... Follow-on Biologics in Chicago. , ... Chicago (Vocus) April 22, 2010 -- Therapeutic Proteins Inc. (TPI) ... manufacturing facility constructed to meet U.S. Food and Drug Administration (FDA) requirements. The Chicago ...
Cached Biology Technology:Smith & Nephew Receives FDA 510k Clearance for a 30-year Knee 2Smith & Nephew Receives FDA 510k Clearance for a 30-year Knee 3Smith & Nephew Receives FDA 510k Clearance for a 30-year Knee 4Smith & Nephew Receives FDA 510k Clearance for a 30-year Knee 5NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 2NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 3NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 4NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 5NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 6NeoStem, Inc. and ImmuneRegen BioSciences(R) Announce a Collaborative Agreement to Advance Stem Cell Technology 7Therapeutic Proteins Inc. Completes First Independent, Dedicated Biosimilars Manufacturing Facility in U.S. 2Therapeutic Proteins Inc. Completes First Independent, Dedicated Biosimilars Manufacturing Facility in U.S. 3Therapeutic Proteins Inc. Completes First Independent, Dedicated Biosimilars Manufacturing Facility in U.S. 4