Navigation Links
Iron stimulates blooms of toxin-producing algae in open ocean, study finds
Date:11/8/2010

SANTA CRUZ, CA--A team of marine scientists has found that toxin-producing algae once thought to be limited to coastal waters are also common in the open ocean, where the addition of iron from natural or artificial sources can stimulate rapid growth of the harmful algae. The new findings, reported this week in the Proceedings of the National Academy of Sciences, add to concerns about proposals to use iron fertilization of the oceans as a way to combat global warming.

Blooms of diatoms in the genus Pseudo-nitschia, which produce a neurotoxin called domoic acid, are a regular occurrence in coastal waters. During large blooms, the algal toxin enters the food chain, forcing the closure of some fisheries (such as shellfish and sardines) and poisoning marine mammals and birds that feed on contaminated fish. But until now, blooms of these algae in the open ocean have attracted little attention from researchers.

"Normally, Pseudo-nitschia cells are sparse in the open ocean, so they don't have much effect. But these species are incredibly responsive to iron, often becoming dominant in algal blooms that result from iron fertilization. Any iron input might cause a bloom of the cells that make the toxin," said Mary Silver, professor emerita of ocean sciences at the University of California, Santa Cruz, and lead author of the new study.

Because both natural and artificial additions of iron to ocean waters cause phytoplankton (single-celled algae) to grow vigorously, and because phytoplankton take up carbon dioxide as they grow, iron fertilization of the oceans has been suggested as way to reduce atmospheric concentrations of carbon dioxide and thereby combat global warming.

"This work definitely reveals a wrinkle in those plans," said coauthor Kenneth Coale, director of Moss Landing Marine Laboratories. "It is much easier to break an ecosystem than it is to fix one. In light of these findings, we should redouble our efforts to re
'/>"/>

Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2

Related biology news :

1. Thesis stimulates methods for public participation on socio-environmental policy
2. Pomegranate extract stimulates uterine contractions
3. Coccolithophore blooms in the southwest Atlantic
4. Battling harmful algal blooms
5. New research to improve management of harmful algal blooms in Puget Sound
6. New research aims to unravel how phosphorus pollution drives toxic algal blooms in the Great Lakes
7. Critical record of Afghanistans natural heritage blooms again
8. Is iron from soil a factor in algal blooms?
9. New project to forecast toxic algal blooms on Pacific Northwest beaches
10. Nitrogen fixation and phytoplankton blooms in the southwest Indian Ocean
11. A thirst for blood sparks toxic algal blooms
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/23/2014)... pair of bioethics experts have added "playwright" to their ... in grappling with an onslaught of ethical issues as ... the human genome was first sequenced. , Until ... W. Bush have been performed for, and by, their ... conferences, meetings and in classrooms. With Oxford University ...
(Date:4/23/2014)... Wash. -- Like a hungry diner ripping open a ... into electricity must tear open a hydrogen molecule. Now ... holding onto the two halves of its hydrogen feast. ... how to make the catalyst work better for alternative ... scientists have shown precisely where the hydrogen halves end ...
(Date:4/23/2014)... evidence that the source of a unique rhythmic sound, ... the "bio-duck," is the Antarctic minke whale ( Balaenoptera ... in the 1960s who thought it sounded like a ... locations in the Southern Ocean, but its source has ... an international team of researchers deployed acoustic tags on ...
Breaking Biology News(10 mins):Bioethicists use theatrical narratives to bridge the gap between society and science 2Bioethicists use theatrical narratives to bridge the gap between society and science 3Halving hydrogen 2Halving hydrogen 3Halving hydrogen 4Scientists identify source of mysterious sound in the Southern Ocean 2Scientists identify source of mysterious sound in the Southern Ocean 3
... A new international consortium aimed at linking together the world,s ... saw the Nobel Prize for Medicine awarded to Mario R. ... this week. The Cambridge University scientist leading ... advances and potentially reduce the number of animals used in ...
... AIDS patients worldwide who are resistant or are developing ... University of Georgia researcher may offer a new treatment ... complex retrovirus responsible for the devastating disease. ... disease known as HIV-AIDS. Although the number of drug-resistant ...
... support of the Breast Cancer Research Foundation (BCRF), ... pleased to announce the inaugural recipients of the ... These grants provide direct support for innovative ... discovery, development, and application of new ways to ...
Cached Biology News:A computer for your mouse! 2New class of drug offers hope to treatment-resistant AIDS patients 2New class of drug offers hope to treatment-resistant AIDS patients 3AACR, BCRF award inaugural grants in translational breast cancer research 2AACR, BCRF award inaugural grants in translational breast cancer research 3
(Date:1/14/2014)... Histogen, Inc., a regenerative medicine company ... under simulated embryonic conditions, today announced that they have ... Inc. for physician-dispensed aesthetic products containing Histogen’s proprietary multipotent ... is an amendment to the existing license between Histogen ...
(Date:1/14/2014)... 14, 2014 The largest international professional organization ... and therapeutic derivatives thereof has endorsed an educational ... about the challenges of adulterated herb and botanical ... The Society for Medicinal Plant and ...
(Date:1/14/2014)... Jan. 14, 2014  RXi Pharmaceuticals Corporation (OTCQX: RXII), ... commercializing innovative therapies addressing major unmet medical needs ... the Notice of Allowance from the United States ... RNAi compounds (sd-rxRNA®), for the treatment of fibrosis. ...
(Date:1/14/2014)... Kerr Corporation, a leading manufacturer of innovative dental products, has ... arch impressions on its dental blog. , Titled ... serves up a list of tips to help dentists best ... David Little as he crafts a porcelain crown using Kerr’s ...
Breaking Biology Technology:Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3
... venture agreement signed with Hunan, Biopharmaceutical to build ... - Biologics: 23% growth in sales and to soon become ... thrombolytic, agent for pulmonary embolism, ... agreement, - Dr. Mark Cochran added ...
... , - Healthcare Information System Goes Live ... In record time of two months, Pragmedic Solutions - a Dubai ... (HIS) for Emaar Healthcare Group, the,healthcare subsidiary of Emaar Properties, it ... doctors exhaust 40 to 60 per cent of their working,hours engaged ...
... , SOLANA BEACH, Calif. & HAMILTON, New Zealand, Oct. ... enzyme-based products for DNA extraction and other life sciences ... agreement with VERITAS Japan to distribute ZyGEM,s DNA extraction ... is the latest in a series of recent major ...
Cached Biology Technology:Microbix Biosystems Provides a Corporate Update 2Microbix Biosystems Provides a Corporate Update 3Microbix Biosystems Provides a Corporate Update 4Microbix Biosystems Provides a Corporate Update 5Microbix Biosystems Provides a Corporate Update 6Microbix Biosystems Provides a Corporate Update 7Pragmedic Implements World-Class Healthcare Solution for Emaar Healthcare 2ZyGEM Strengthens its Worldwide Presence With New Distribution Agreement for Japan 2ZyGEM Strengthens its Worldwide Presence With New Distribution Agreement for Japan 3ZyGEM Strengthens its Worldwide Presence With New Distribution Agreement for Japan 4
Anti-Ephrin B1 Host: rabbit polyclonal Species Reactivity: human Applications: WB Storage: 4C...
Human Regulatory T cell Staining Kit #2 (w/ APC Foxp3 PCH101, FITC CD4, PE CD25)...
...
Request Info...
Biology Products: