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:7/30/2014)... the shortest distance between two points is a straight ... have been taking the familiar axiom to heart. ... to be intense, with each racing for the chance ... species, sperm form cooperative groups that allow them to ... A new study, conducted by Heidi Fisher, a post-doctoral ...
(Date:7/30/2014)... San Antonio Life Sciences Institute (SALSI), a joint venture ... and The University of Texas Health Science Center at ... Initiative Pilot Program. The winners, Emily Boice from UTSA ... receive $25,000 for their project titled, "Novel engineered ferritins ... environment." , Boice and Huang,s research is focused on ...
(Date:7/30/2014)... of $1 million from the Cornelia Cogswell Rossi Foundation ... Center. , The newly established Connie Cogswell ... develop a greater breadth and depth of knowledge of ... pace of research to improve human health. , The ... the Laboratory and its external partners, supporting research to ...
Breaking Biology News(10 mins):When cooperation counts 2When cooperation counts 3Rossi Foundation pledges $1M for JAX neurobehavioral research center 2
... New Zealand snail and its worm parasite makes sex ... in the absence of parasites, say Indiana University Bloomington ... week,s Current Biology . The scientists, report ... of sex, which suggests sexual reproduction allows host species ...
... external skeletons that appear to change colors as the ... for something else--providing a blueprint for materials that reflect ... Scientists at the Georgia Institute of Technology in Atlanta ... light-reflecting properties of the cells that make up their ...
... -- Experiencing chronic stress day after day can produce wear ... have a detrimental effect on learning and emotion. However, ... learning and memory. Researchers at the University at Buffalo ... that acute stress can produce a beneficial effect on learning ...
Cached Biology News:Parasitic worms make sex worthwhile 2Parasitic worms make sex worthwhile 3What scientists know about jewel beetle shimmer 2Short stressful events may improve working memory 2
(Date:7/31/2014)... Boston, MA (PRWEB) July 31, 2014 ... ) finds itself flush with innovative adult stem cell ... patents and has three additional patent applications ... Office. , The patented inventions address two of the ... and regenerative medicine. Adult stem cells are difficult ...
(Date:7/30/2014)... W. R. Grace & Co. ... REVELERIS® Prep purification system , a dual-mode ... other researchers to perform both flash and preparative ... With the REVELERIS® Prep purification system, researchers can ... with a simple touch of the screen, giving ...
(Date:7/30/2014)... LONDON , July 30, 2014  Replikins Ltd. ... structure of the Ebola virus. Before the current outbreaks, ... Replikins per 100 amino acids) between 1995 and 2002 ... 2010, threefold in 2012, and sixteen-fold in 2013, thus ... the past, this technology has been shown to be ...
(Date:7/30/2014)... SEGUNDO, Calif. , July 30, 2014 /PRNewswire/ ... contractor on the Fully Integrated Lifecycle Mission Support ... and Space Administration (NASA). Under the terms of ... Ames Research Center at Moffett Field, Calif. In ... support for bioscience flight development projects on the ...
Breaking Biology Technology:The Adult Stem Cell Technology Center, LLC Launches A Marketing Campaign To License Adult Stem Cell Biotechnologies 2The Adult Stem Cell Technology Center, LLC Launches A Marketing Campaign To License Adult Stem Cell Biotechnologies 3Grace Launches New REVELERIS® Prep Purification System 2Wyle Wins NASA's Fully Integrated Lifecycle Mission Support Services Contract 2
... Aug. 7 SGX Pharmaceuticals,(Nasdaq: SGXP ) today announced ... 30, 2008. For the three months ended June 30, 2008, ... of $7.2 million. For,the six months ended June 30, 2008, ... The revenue in the six month period includes $10.8,million of ...
... SOUTH SAN FRANCISCO, Calif., Aug. 7 Anesiva,Inc. (Nasdaq: ... the second quarter and six months ended June 30, ... advance for Anesiva as we,introduced Zingo(TM) in the U.S. ... executive officer. "In addition, I,m pleased,to report that our ...
... Chromos Molecular,Systems Inc. ("Chromos" or the "Company") announced ... (the "Arrangement Agreement") dated,August 6, 2008 with, among ... Chromos, and Modatech Systems Inc. ("Modatech"),pursuant to which ... effect a plan,of arrangement (the "Arrangement") under section ...
Cached Biology Technology:SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 2SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 3SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 4SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 5SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 6SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 7SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 8SGX Pharmaceuticals Announces Financial Results for the Three and Six Months Ended June 30, 2008 9Anesiva Announces Second Quarter 2008 Financial Results and Update 2Anesiva Announces Second Quarter 2008 Financial Results and Update 3Anesiva Announces Second Quarter 2008 Financial Results and Update 4Anesiva Announces Second Quarter 2008 Financial Results and Update 5Anesiva Announces Second Quarter 2008 Financial Results and Update 6Anesiva Announces Second Quarter 2008 Financial Results and Update 7Anesiva Announces Second Quarter 2008 Financial Results and Update 8Chromos enters into an Arrangement Agreement 2Chromos enters into an Arrangement Agreement 3
... 3′-(α-Amino- p- methoxyhydrocinnamamido)-3′-deoxy-N,N-dimethyladenosine, 2HCl ... MOISTURE. Protein synthesis inhibitor. Inhibits translation ... polypeptide chains. Induces DNA fragmentation in ... cells. Purity: ≥98% by TLC. ...
... Stabilizer is a bovine protein-free alternative ... is an aqueous solution that contains ... buffer (3-(N-Morpholino) propanesulfonic acid), pH 6.0 ... of 0.02% methylisothiazolone and 0.02% bromonitrodioxane ...
... quantitation kit is used to quantitate double-stranded DNA ... RNA or protein. With this kit, DNA is ... detected with a VersaFluor or other fluorometer. The ... ng per ml to 5 micrograms per ml ...
... Reagent A: MTT, (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrasodium bromide), 50mg/vial. ... is cleaved by living cells to yield ... requires active mitochondria, and even freshly dead ... MTT. Reagent A is a component of ...
Biology Products: