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:7/27/2015)... , July 27, 2015  Synaptics Inc. ... human interface solutions, today announced that Huawei has ... touchscreen solution for its stylish smartwatch. Huawei chose ... proven reliability, low power and highly responsive human ... finger. Huawei designers also required a classic round ...
(Date:7/27/2015)...   Zynx Health ™, the market leader ... today announced that its ZynxCarebook ™ mobile ... smartphones and tablets. With this expansion, care team ... ZynxCarebook to securely exchange messages and share assessments ... to other care settings, and improve clinical outcomes ...
(Date:7/23/2015)... Aware, Inc. (NASDAQ: AWRE ), a leading supplier of ... second quarter ended June 30, 2015.  Revenue ... decrease of 33% compared to $6.8 million in the same ... 2015 was $0.3 million, or $0.01 per diluted share, which ... the same period a year ago.  Lower ...
Breaking Biology News(10 mins):Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3Zynx Health Adds Android Device Support to ZynxCarebook Solution 2Zynx Health Adds Android Device Support to ZynxCarebook Solution 3Aware, Inc. Reports Second Quarter 2015 Financial Results 2Aware, Inc. Reports Second Quarter 2015 Financial Results 3Aware, Inc. Reports Second Quarter 2015 Financial Results 4Aware, Inc. Reports Second Quarter 2015 Financial Results 5Aware, Inc. Reports Second Quarter 2015 Financial Results 6
... Looking into the brain is yielding vital clues to ... being presented today at the Seventh International Conference on ... held at 12:15 p.m., Thursday, June 7, have helped ... treatment of the disease. , The first study, presented ...
... crops may contribute to increased productivity in sustainable agriculture, ... 8 issue of the journal Science. The study ... field experiments all over the world, involving corn and ... insecticidal properties. The research was conducted by scientists ...
... In a way, nanotubes are nature’s smallest candles. , These ... so small that it takes about 100,000 laid side-by-side to ... last five years, scientists have discovered that some individual nanotubes ... in light. Some glow brightly. Others glow dimly. Some glow ...
Cached Biology News:Brain holds clues to bipolar disorder 2New study finds genetically engineered crops could play a role in sustainable agriculture 2Brightening prospects of using fluorescent nanotubes in medical applications 2Brightening prospects of using fluorescent nanotubes in medical applications 3
(Date:7/27/2015)... July 27, 2015 IDEXX Laboratories, Inc. (NASDAQ: ... clinics have submitted over 100,000 specimens to IDEXX Reference ... the first 10 days since the breakthrough kidney function ... is a leading cause of suffering and death in ... are consistent with generally accepted kidney disease prevalence data ...
(Date:7/24/2015)... (PRWEB) , ... July 24, 2015 , ... VetStem Biopharma, ... Center in support of stem cell therapy training and clinical opportunities. , “We are ... opportunity to veterinarians in the San Diego area. Stem cell therapy is an established ...
(Date:7/24/2015)... SAN FRANCISCO , July 24, 2015 ... is expected to reach USD 27.8 billion by ... 2015 to 2022, according to a new study by ... genomic sequencing methodologies is expected to result in significant ... is expected to augment adoption and usage rates of ...
(Date:7/23/2015)... ... July 23, 2015 , ... Science and technology continue ... new drug therapies and devices – according to Susan Chang, MD, director of the ... on how science and new technology are impacting the development of new treatments and ...
Breaking Biology Technology:Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 2Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 3Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 4Over 100,000 Pets Tested with New IDEXX SDMA Kidney Function Test Since Product Launch on July 13 5VetStem Biopharma, proudly announces a new long term partnership with VCA Emergency Animal Hospital & Referral Center. 2VetStem Biopharma, proudly announces a new long term partnership with VCA Emergency Animal Hospital & Referral Center. 3Next Generation Sequencing (NGS) Market To Reach $27.8 Billion By 2022: Grand View Research, Inc. 2Next Generation Sequencing (NGS) Market To Reach $27.8 Billion By 2022: Grand View Research, Inc. 3Next Generation Sequencing (NGS) Market To Reach $27.8 Billion By 2022: Grand View Research, Inc. 4Next Generation Sequencing (NGS) Market To Reach $27.8 Billion By 2022: Grand View Research, Inc. 5Experts Present How Science and New Technology are Driving New Brain Tumor Treatments and Improving Quality of Life 2Experts Present How Science and New Technology are Driving New Brain Tumor Treatments and Improving Quality of Life 3
... Company to Hold a Conference Call Tomorrow (Tuesday) at 8:30 am ... ... September 10 XTL,Biopharmaceuticals Ltd. (NASDAQ: XTLB ; LSE: XTL; ... of Bicifadine - a serotonin,and norepinephrine reuptake inhibitor (SNRI) - for ...
... LONDON, Sept. 7 Chiltern, a leading global ... Richard Schulz,Chiltern,s Country Manager for the Czech Republic, ... The award ceremony was held in,London,s historic Gibson ... peers by a panel of judges who,reviewed his ...
... On Thursday, October,18, 2007, Wyeth (NYSE: WYE ) ... Company will hold a one-hour conference call with,research analysts ... Interested,investors and others may listen to the call live ... may be accessed by visiting our website,at http://www.wyeth.com ...
Cached Biology Technology:XTL Biopharmaceuticals Initiates Phase IIb Clinical Trial of Bicifadine for the Treatment of Diabetic Neuropathic Pain 2XTL Biopharmaceuticals Initiates Phase IIb Clinical Trial of Bicifadine for the Treatment of Diabetic Neuropathic Pain 3XTL Biopharmaceuticals Initiates Phase IIb Clinical Trial of Bicifadine for the Treatment of Diabetic Neuropathic Pain 4XTL Biopharmaceuticals Initiates Phase IIb Clinical Trial of Bicifadine for the Treatment of Diabetic Neuropathic Pain 5XTL Biopharmaceuticals Initiates Phase IIb Clinical Trial of Bicifadine for the Treatment of Diabetic Neuropathic Pain 6XTL Biopharmaceuticals Initiates Phase IIb Clinical Trial of Bicifadine for the Treatment of Diabetic Neuropathic Pain 7Richard Schulz Receives the Coveted GCPj Award for Best Clinical Researcher of the Year 2
No description available in Ensembl Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
... atoms at the 9, 10, 12, and 13 ... internal standard for the quantification of 9(S)-HODE by ... the lipoxygenation of linoleic acid in both plants ... plaques, as an esterified component of membrane phospholipids ...
... 9(S)-HODE-d4 contains 4 deuterium atoms at the ... intended for use as an internal standard for ... spectrometry. 9(S)-HODE is produced by the lipoxygenation of ... has been detected in atherosclerotic plaques, as an ...
12(S)-HETE-d8 is used as an internal standard for the quantification of 12(S)-HETE by stable isotope dilution mass spectrometry....
Biology Products: