Navigation Links
Ocean islands fuel productivity and carbon sequestration through natural iron fertilization
Date:1/30/2009

0 square kilometers (the size of Ireland). In contrast, the area south of Crozet experiences only a small, short bloom later in the season.

"Our first question was, 'where does the iron come from?'" said Charette. "Airborne dust wasn't the solution there isn't enough exposed soil on Crozet for winds to carry iron from the island to the deep water where the bloom occurs. While other studies concluded that upwelling from the deep ocean was the main source of the iron, we wanted to test the hypothesis that the iron was coming from the island itself and the iron-rich sediments in the shallow water and the plateau area around it."

Since the currents move from south to north over Crozet, the researchers reasoned that iron could be entrained in the water column as it flows over the plateau. First, they needed a way to understand how long it would take iron to travel from the island's shore to the bloom site and if the rate of supply was enough to kick-start and sustain the bloom for several months. Iron concentrations in the water wouldn't tell them where it came from, so the team sampled waters around Crozet looking for naturally-occurring radium isotopes, which, like iron, originate in the sediments and can therefore be used to quantify the amount of iron that the islands and surrounding sediments can supply to the bloom area. The decaying isotopes provided a built-in clock for the investigators to determine how quickly the water moves over the plateau and into deeper water. The distribution of radium in the water column demonstrated that the source of the iron was the island and the sediments in the shallow water around it and the plateau.

A second question the team sought to answer was whether the differences in the blooms between the north and south sides of Crozet would result in greater amounts of carbon held in the deep ocean. Using sediment traps and sediment cores, the researchers uncovered the first evidence that carbon deposited a
'/>"/>

Contact: Stephanie Murphy
media@whoi.edu
508-289-2271
Woods Hole Oceanographic Institution
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Ocean research officials hail completion of modernization for US scientific ocean drilling vessel
2. Dramatic expansion of dead zones in the oceans
3. Ocean acidification could have broad effects on marine ecosystems
4. Ocean fish farming harms wild fish, study says
5. Ocean acidification from CO2 emissions will cause physiological impairment to jumbo squid
6. Ocean growing more acidic faster than once thought
7. Europe cores in EUROCORES: Ocean drilling in EuroMARC
8. Uncovering secrets of life in the ocean
9. Mysterious microbe plays important role in ocean ecology
10. Mysterious microbe may play important role in ocean ecology
11. Ecologists use oceanographic data to predict future climate change
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/6/2015)... Germany , August 6, 2015 /PRNewswire/ ... SensoMotoric Instruments (SMI) shows the world,s first ... based on Epson,s Moverio BT-200 see-through head mounted display ... new solution, unprecedented quality and efficiency is brought to ... displays. For the first time, professionals and researchers can ...
(Date:8/5/2015)... August 5, 2015 According to ... Management Market by Software, Services, Vertical (BFSI, Airport, IT & ... - Global Forecast to 2020", published by MarketsandMarkets, defines ... globally into various segments. The global PIAM Market is ... $546.2 Million by 2019, at a CAGR of 14.9 ...
(Date:8/5/2015)... Calif. , Aug. 5, 2015 The ... continuous growth in applications, penetration into newer sectors, and ... year. The global biosensors space has seen the entry ... the market so far. (Photo - ... & Sullivan, Analysis of the Global Biosensors Market ...
Breaking Biology News(10 mins):SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3Physical Identity and Access Management Market Worth $546.2 Million by 2019 2Physical Identity and Access Management Market Worth $546.2 Million by 2019 3Physical Identity and Access Management Market Worth $546.2 Million by 2019 4Innovative Biosensors Incite Use in Non-Traditional Applications 2Innovative Biosensors Incite Use in Non-Traditional Applications 3Innovative Biosensors Incite Use in Non-Traditional Applications 4
... 16, 2010) Researchers at Tufts University School of ... sequence that promotes increased numbers of specific microRNAs (miRNAs), ... The discovery helps researchers understand the links between miRNA ... findings are published in the August 13 issue of ...
... called microRNAs, control protein production primarily by causing the ... to be disabled by the cell, according to Whitehead ... microRNAs control protein production by causing the mRNAs to ... microRNAs impart by jamming the process that translates mRNAs ...
... Madrid, August 16, 2010.- Over 1.500 breast pathology experts will ... 16th World Congress of the Senologic International Society (SIS). This ... Senology and Breast Diseases (SESPM) will take place in the ... According to Dr. Carlos Vzquez, president of the SIS and ...
Cached Biology News:Newly identified RNA sequence is key in microRNA processing 2RNA snippets control protein production by disabling mRNAs 2RNA snippets control protein production by disabling mRNAs 31,500 worldwide experts debate the latest advances in breast pathologies' treatments in Valencia 2
(Date:8/27/2015)... 27, 2015 HUYA Bioscience International (HUYA) today announced ... Japan Society of HTLV-1, held this week at the ... of the Society is to promote research on HTLV-1 ... medical technology and research related to these fields to ... "HUYA is proud to support this prestigious conference," said ...
(Date:8/27/2015)... ... August 27, 2015 , ... Proove Biosciences, a ... the relationship of genetics and hypertension at the International Academy of Cardiology ... British Columbia, Canada. The event, which boasts an extensive overview of the latest ...
(Date:8/26/2015)... 2015  The Diabetes Research Institute (DRI), a ... Miller School of Medicine, announced today that the ... for the first time a novel transplant technique ... approved Phase I/II study builds upon decades of ... important first step toward the development of the ...
(Date:8/26/2015)... 2015 After litigating and negotiating patent ... to P2i United States patent RE43,651 ... the United States without any admission ... either party. As a result of the parties, settlement, the ... California dismissed the case without prejudice. ...
Breaking Biology Technology:HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 2HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 3HUYA Bioscience International Sponsors Japan Society Of HTLV-1 Annual Meeting 4Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 2Proove Biosciences Presents Ground-Breaking Data on Genetics and Heart Disease at 20th World Congress on Heart Disease 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 2Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 3Diabetes Research Institute Successfully Transplants First Patient In Pilot BioHub Trial 4P2i Settles United States Litigation 2
... -- Spanning fewer than a thousand atoms, the electronic ... most efforts to characterize them. Now for the first time, ... devices by mapping them atom-by-atom. , ,In a study published ... John Booske, a UW-Madison professor of electrical and computer ...
... Madison, Wis. - Gov. Jim Doyle on Monday ... lauding Senate Majority Leader Bill Frist's recent decision to ... such research. , ,Doyle made his comments at the ... where he also praised Wisconsin's medical development scene. , ...
... provider of automated document delivery solutions headquartered in France, announced ... headquarters in Madison, in response to quickly growing use of ... mail processing facility extends the capabilities provided by the company's ... the U.S. , ,The Esker on Demand service, which also ...
Cached Biology Technology:Engineers chart semiconductors on the scale of atoms 2Engineers chart semiconductors on the scale of atoms 3Engineers chart semiconductors on the scale of atoms 4Doyle praises Frist's new stem cell research position 2Doyle praises Frist's new stem cell research position 3
Anti-20S proteasome subunits alpha 1, 2, 3, 5, 6 & 7, clone MCP231 Immunogen: Dinitrophenylated proteasomes Molecular Weight: 29 and 32 kDa....
Mouse monoclonal [J53] to Thyroid Hormone Receptor beta 1 ( Abpromise for all tested applications). entrezGeneID: 7068 SwissProtID: P10828...
Anti-ADP-Ribosylation Factor 1, clone 3F1 Immunogen: Synthetic peptide corresponding to the C-terminal amino acid sequence of human ARF1. Available Date: 38495...
Biotin anti-mouse CD48...
Biology Products: