Navigation Links
Nitrogen from pollution, natural sources causes growth of toxic algae, study finds
Date:2/6/2013

SAN FRANCISCO, Feb. 6, 2013 -- Nitrogen in ocean waters fuels the growth of two tiny but toxic phytoplankton species that are harmful to marine life and human health, warns a new study published in the Journal of Phycology.

Researchers from San Francisco State University found that nitrogen entering the ocean -- whether through natural processes or pollution -- boosts the growth and toxicity of a group of phytoplankton that can cause the human illness Amnesic Shellfish Poisoning.

Commonly found in marine waters off the North American West Coast, these diatoms (phytoplankton cells) of the Pseudo-nitzschia genus produce a potent toxin called domoic acid. When these phytoplankton grow rapidly into massive blooms, high concentrations of domoic acid put human health at risk if it accumulates in shellfish. It can also cause death and illness among marine mammals and seabirds that eat small fish that feed on plankton.

"Regardless of its source, nitrogen has a powerful impact on the growth of phytoplankton that are the foundation of the marine food web, irrespective of whether they are toxic or not," said William Cochlan, senior research scientist at SF State's Romberg Tiburon Center for Environmental Studies. "Scientists and regulators need to be aware of the implications of both natural and pollutant sources of nitrogen entering the sea."

Nitrogen can occur naturally in marine waters due to coastal upwelling, which draws cool, nutrient-rich water containing nitrate (the most stable form of nitrogen) from deeper depths into sunlit surface waters. Pollution, including agricultural runoff containing fertilizer and effluent from sewage plants, is also responsible for adding nitrogen, including ammonium and urea, to ocean waters, but in most regions these types of nitrogen occur at relatively low concentrations.

In laboratory studies, Cochlan and former graduate student Maureen Auro found that natural and pol
'/>"/>

Contact: Elaine Bible
ebible@sfsu.edu
415-405-3606
San Francisco State University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Lower nitrogen losses with perennial biofuel crops
2. Researchers to study impacts of pollutant nitrogen on plant species diversity
3. How much nitrogen is fixed in the ocean?
4. Scientists develop new carbon accounting method to reduce farmers use of nitrogen fertilizer
5. Nitrogen pollution changing Rocky Mountain National Park vegetation, says CU-Boulder-led study
6. Modern hybrid corn makes better use of nitrogen, study shows
7. Carbon dioxide from water pollution, as well as air pollution, may adversely impact oceans
8. Cut emissions further or face risks of high air pollution, study shows
9. Recreating natural complex gene regulation
10. Wallaces century-old map of natural world updated
11. New and revised standards for omega-3s, natural sweeteners and other food ingredients proposed
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Nitrogen from pollution, natural sources causes growth of toxic algae, study finds
(Date:10/29/2014)... At a ceremony held in New York City on ... King, the American Cancer Society Professor of Genome Sciences ... and 2008 Honorary Doctor of Philosophy of Tel Aviv ... in Medical Science. , In addition to her honorary ... Lecturer at the TAU School of Medicine, and for ...
(Date:10/29/2014)... Hebei, China — BGI Tech and Hebei Agricultural University ... Jujube genome. Jujube is the most economically important member ... particularly difficult to sequence due the high level of ... time that a genome in the Rhamnaceae (Buckthorn) family ... in Nature Communications . , Jujube ...
(Date:10/28/2014)... the tragic realities of cancer is that the ... and their effectiveness varies unpredictably from patient to ... to change this reality by rapidly assessing how ... individual,s cancer before chemotherapy begins. , A team ... Assistant Professor Melissa Skala has developed the technique, ...
Breaking Biology News(10 mins):Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2BGI Tech and Hebei Agricultural University complete the genome sequencing of the jujube tree 2Improving breast cancer chemo by testing patient's tumors in a dish 2Improving breast cancer chemo by testing patient's tumors in a dish 3
... A new computer model of the Gulf of Mexico ... how underwater currents may have primed marine microorganisms to degrade ... of water move over the ruptured well, picking up hydrocarbons. ... over the well, the bacteria have already been activated, are ...
... Species pairs that disappear through hybridization after ... the disturbance is removed, according to a new ... reemergence might happen. The findings, published in ... conservationists and ecosystem managers interested in preserving, or ...
... Foundation for Biodiversity, the Charter Provincial Council of Gipuzkoa and ... be studying the re-stocking of the three eel phases (elver, ... and July, respectively, in three streams of the Oria basin. ... be able to manage the species and thus contribute to ...
Cached Biology News:Gulf currents primed bacteria to degrade oil spill 2Species reemergence after collapse: Possible but different 2A study will enable the survival and growth of the 3 development phases of the European eel 2
(Date:10/27/2014)... , October 27, 2014 ... right to produce, exhibit and sell its artificial ... to impeach their patent.      (Photo: ... four years of fighting, the definitive judgement has ... and produces innovative and accessible hi-tech prostheses with ...
(Date:10/27/2014)... The “Molecular Diagnostic Market by Application ... DNA Sequencing), End User (Hospital, Laboratories), & by ... to 2018” provides a detailed overview of the ... and strategies impacting the global molecular diagnostics market ... revenue and share analysis. , The global molecular ...
(Date:10/27/2014)... 27, 2014 The report “Smart ... Traffic Management, Communication, Monitoring), and by Display (Variable ... 2019” segments the global market into various sub-segments ... also identifies the drivers and restraints for this ... , Browse 75 market tables and 37 figures ...
(Date:10/27/2014)... October 27, 2014 Investor-Edge has ... (NASDAQ: NBIX ), Insmed Inc. (NASDAQ: ... BCRX ), Dyax Corporation (NASDAQ: DYAX ), ... five companies can be accessed at: http://investor-edge.com/register ... Composite ended at 4,483.72, up 0.69%, the Dow Jones ...
Breaking Biology Technology:Italian Lower Limb Prosthesis Company Wins Lawsuit Against German Giant Ottobock 2Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 2Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 3Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 4Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 5Smart Highway Market by Technology, and Display Expected to Reach $27.992.0 Million by 2019- New Report by MarketsandMarkets 2Smart Highway Market by Technology, and Display Expected to Reach $27.992.0 Million by 2019- New Report by MarketsandMarkets 3Smart Highway Market by Technology, and Display Expected to Reach $27.992.0 Million by 2019- New Report by MarketsandMarkets 4Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 2Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 3Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 4Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 5
... NBIX ) today announced its financial results for the ... the fourth quarter of 2010, the Company reported net income of ... loss of $7.9 million, or $0.20 per basic share, for the ... the Company reported a net loss of $8.0 million, or $0.15 ...
... Technologies, Inc., a privately-held orthobiologics company, announced today that ... is scheduled to present at Canaccord Genuity,s Musculoskeletal Conference ... February 15, 2011 at 10:00 AM (PT).  The conference, ... Meeting, will feature presentations from over 60 public and ...
... Mass., Feb. 10, 2011 Qteros, Inc., ... Bioprocessing (CBP) platform for the lowest-cost production ... engagements across the United States and Europe for members ... Qteros, Senior Vice President, Commercial Development and Engineering, will ...
Cached Biology Technology:Neurocrine Biosciences Reports Fourth Quarter and Year End 2010 Results 2Neurocrine Biosciences Reports Fourth Quarter and Year End 2010 Results 3Neurocrine Biosciences Reports Fourth Quarter and Year End 2010 Results 4Neurocrine Biosciences Reports Fourth Quarter and Year End 2010 Results 5Neurocrine Biosciences Reports Fourth Quarter and Year End 2010 Results 6Neurocrine Biosciences Reports Fourth Quarter and Year End 2010 Results 7ISTO Technologies, Inc. to Present at Canaccord Genuity's Musculoskeletal Conference 2Qteros Management to Present at Notable Alternative Energy Conferences in February 2
... The ProteoExtract™ Protein Precipitation Kit ... up of proteins from aqueous samples. ... by the presence of non-protein impurities ... in the protein sample that interfere ...
... activated carrier proteins to simplify the ... Activated Carrier Proteins are commonly used ... a heterobifunctional cross-linker (Sulfo-SMCC). This activation ... protein. Thus allowing the maleimide-activated ...
... This kit allows for rapid, convenient, ... The simple bind/wash/elute process utilizes a spin ... uses beads for concentration of proteins which ... beads are strong ion exchangers, offering high ...
... optically clear polystyrene with frosted labeling ... for cell counting. 100% integrity tested. ... new product number, created to easily ... no availability yet, please order under ...
Biology Products: