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:8/29/2014)... has been known about what genetic changes transform wild ... one of whom is a University of Montana assistant ... controlling the development of the brain and the nervous ... was published Aug. 28 in Science and ... at http://www.sciencemag.org/ ., The domestication of animals and ...
(Date:8/29/2014)... researchers explored the type and number of connections in ... plays on robustness in a study published in ... found that the assortativity signature contributes to a network,s ... that varying the out-out assortativity of TFN models has ... the other three types of assortativity," said Dov A. ...
(Date:8/29/2014)... as the prolific bloomer Emiliania huxleyi , can ... The finding contradicts the common view that E. ... scarce supplies of thiamine in the ocean to survive. ... the ocean," says CIFAR Senior Fellow Alexandra Worden ... with CIFAR fellows John Archibald (Dalhousie University), ...
Breaking Biology News(10 mins):New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3Assortativity signatures of transcription factor networks contribute to robustness 2Not all phytoplankton in the ocean need to take their vitamins 2Not all phytoplankton in the ocean need to take their vitamins 3
... Smart Search & Match,the leading provider of high-performance ... has joined the company as Product Marketing Manager. ... 15 years of product and marketing management,experience to ... many high-tech products and solutions worldwide. He has ...
... 2008 An international research team led by Tim ... the director of the School of Medicine,s Center for ... alternative splicing, the process by which single genes produce ... that curing the more than half of genetic diseases ...
... what they think may be a basic recipe for ... stem cells from essentially any mammal, including cows, pigs ... December 26th issue of the journal Cell , ... demonstrated to work in mice earlier this year, which ...
Cached Biology News:Case Western Reserve finds mechanism underlying alt. splicing of premessenger RNA into messenger RNA 2Case Western Reserve finds mechanism underlying alt. splicing of premessenger RNA into messenger RNA 3Recipe for capturing authentic embryonic stem cells may apply to any mammal, study suggests 2Recipe for capturing authentic embryonic stem cells may apply to any mammal, study suggests 3
(Date:8/28/2014)... Willow Grove, PA (PRWEB) August 28, 2014 ... talent, and create a culture that will allow individuals ... that are becoming increasingly important for employers looking to ... life science industries are embracing this trend, as the ... the fabric of a company, which will have real ...
(Date:8/28/2014)... 2014  Armetheon, Inc. ( www.armetheon.com ), a ... late-stage cardiovascular drug candidates, today announced that it ... of financing. The Series A round was co-led ... participation from investors that included Atheneos Capital and ... Larry Hsu , the founder of Impax Laboratories. ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 Earlier this ... University in partnership with the U.S. Air Force ... biofuel. The results indicated that this type of fuel ... feedstock and will be important to America’s Eco friendly ... now has a mandate to become independent of foreign ...
(Date:8/27/2014)... August 27, 2014 Varian Medical Systems ... its current Salt Lake City manufacturing facility and allow ... Utah to ultimately create 1,000 new full time jobs ... , “Utah is home to hardworking people with immense ... credited with Varian’s success in the manufacturing of our ...
Breaking Biology Technology:Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 3Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 3Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 4Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 5Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 2Varian Medical Systems Groundbreaking on Facility Expansion Triggers Influx of New Jobs to Salt Lake 3
... 15, 2011 This evening, Novo Nordisk awarded sponsorships ... support programs that educate people living with type 2 ... reduce the risk of long-term diabetes related complications. The ... program – a new initiative that aims to promote ...
... 15, 2011 Roka Bioscience announced today that the ... certification of the Listeria Detection Assay. This evaluation is ... (AOAC-RI) certification of methods used in the food safety ... laboratory and monitored by AOAC. The internal portion of ...
... /PRNewswire-Asia/ -- ShangPharma Corporation (NYSE: SHP ... pharmaceutical and biotechnology research and development outsourcing company, ... leading Chinese pharmaceutical company, today announced that Shanghai ... and Hengrui have entered into a strategic partnership ...
Cached Biology Technology:Novo Nordisk and Atlanta Area Organizations Partner on Diabetes Education Programs 2Novo Nordisk and Atlanta Area Organizations Partner on Diabetes Education Programs 3Roka Bioscience Initiates External Trial for AOAC Certification 2ShangPharma Subsidiary and Jiangsu Hengrui Medicine Partner in Therapeutic Antibody Research and Development 2ShangPharma Subsidiary and Jiangsu Hengrui Medicine Partner in Therapeutic Antibody Research and Development 3
... Storage: The kit is stable for 12 months ... contents of the kit cold. , ,Principle: ... silica-gel based membrane which selectively adsorbs up to ... specialized binding buffers. Nucleotides, oligos ( , ,Application: ...
The Econo gradient pump rack is a preassembled rack that is used to hold the components of the Econo gradient pump kits....
... Leu DAP FLISP Assay with FAM-Labeled ... nm) • Accurately measure serine protease ... permeabilization • B-Bridge's FLISP Kits utilize ... proteases (FLISPs) to measure chymotrypsin-like activity ...
... instrument is the cycler that revolutionized ... uniformity and swappable blocks ensure consistent ... This rugged machine is more than ... for new features and upgrades as ...
Biology Products: