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:5/25/2015)... , May 25, 2015  Australia,s market for wearable ... although 2014 saw the advent of several trials and ... April 2015 is expected to ignite interest in wearables ... Australia . This in turn will ... and drive new partnerships amongst vendors and distributors. ...
(Date:5/22/2015)... CT , May 22, 2015  NXT-ID, Inc. (NASDAQ: ... June 1st, it will be ending its promotional pricing and ... . Laurence Savin , Head of Marketing ... exclusive promotional pricing until the end of May. To get ... wocketwallet.com/invite and when we open the store on June 1, ...
(Date:5/22/2015)... , May 22, 2015 ... Market by Solution (2D, 3D, Thermal, Emotion, Forensic), by Software ... User (Government and Utilities, Consumer and Home) - Global ... to grow from $2.77 Billion in 2015 to $6.19 ... Browse 79 market data Tables and   ...
Breaking Biology News(10 mins):Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 2Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 3Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 4NXT-ID, Inc Announces Retail Price For Wocket Smart Wallet And Extends Discounted Promotional Price Till End Of May 2NXT-ID, Inc Announces Retail Price For Wocket Smart Wallet And Extends Discounted Promotional Price Till End Of May 3Facial Recognition Market Worth $6.19 Billion by 2020 2Facial Recognition Market Worth $6.19 Billion by 2020 3
... major obstacle to HIV research is the virus,s exquisite specialisation ... like the humble lab mouse, can deliver only limited information. ... access Journal of Biology have made an ingenious ... key features of HIV infection without being infected with HIV. ...
... the Ocean,s most distinctive residents. ,Everyone wants to understand ... McComb from Florida Atlantic University. One possible reason is ... enhanced by their weird head shape, says McComb, giving ... to McComb, there were two schools of thought on ...
... are the bare essentials of life, the indispensable ingredients required ... Can we describe the molecular anatomy of a cell, and ... are just some of the questions that scientists in a ... Germany, and the Centre de Regulacio Genmica (CRG) in Barcelona, ...
Cached Biology News:A reductionist approach to HIV research 2Wide heads give hammerheads exceptional stereo view 2First-ever blueprint of a minimal cell is more complex than expected 2First-ever blueprint of a minimal cell is more complex than expected 3
(Date:5/25/2015)... 2015 The 2015 Market Research ... a professional and in-depth study on the current ... with a focus on the Chinese situation. ... research are Linde Industrial Gas, Basf, Air Products, ... Xinlong Group, Longsheng Group, Juhua Group, Wandali Gas, ...
(Date:5/25/2015)... (PRWEB) May 25, 2015 Phenome Networks, ... software provider, announced the availability, beginning May 31st, of ... version of Phenome One solidifies Phenome Networks’ lead in ... supporting a simple and intuitive breeding workflow based on ... ability to customize field design, and more. The new ...
(Date:5/22/2015)... plc (NYSE: ACT ) today confirmed that a ... Second Circuit has issued a ruling upholding a December ... distribution of NAMENDA ® (memantine HCl) immediate-release tablets. ... "While we are disappointed by the Court,s decision ... strong efforts to convey the significant benefits of NAMENDA ...
(Date:5/22/2015)... 22, 2015 According to a ... & 2D Gel Electrophoresis, Agarose & Polyacrylamide Gel, Capillary ... by Application & by End User - Global Forecast ... expected to reach around $1.98 Billion by 2020 with ... to 2020. Browse 226 ma ...
Breaking Biology Technology:Global Hydrogen Chloride Industry 2015 Trends and Analysis Available in a New Report at DeepResearchReports.com 2Global Hydrogen Chloride Industry 2015 Trends and Analysis Available in a New Report at DeepResearchReports.com 3Phenome Networks Announces its Next Generation Plant Breeding Management and Analytics Software 2Phenome Networks Announces its Next Generation Plant Breeding Management and Analytics Software 3Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 2Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 3Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 4Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 5Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 6Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 7Actavis Confirms Appeals Court Ruling Requiring Continued Distribution of NAMENDA IR 8Electrophoresis Market Worth $1.98 Billion by 2020 2Electrophoresis Market Worth $1.98 Billion by 2020 3Electrophoresis Market Worth $1.98 Billion by 2020 4
... will have a new resource to help them navigate ... related centers on campus. , ,The Office of Corporate ... , which is to include events, publications and both ... to UW=-Madison faculty, staff and students. , ,Were one ...
... Santiago At the State University of New York in ... the campus that led to the creation of a $1.5 ... residence in Wisconsin, Santiago sees no reason why UW-Milwaukee can't ... this summer as the new chancellor of UW-Milwaukee, is determined ...
... Wis. The University of Wisconsin-Madison announced on Friday ... the field of stem-cell research. R. Timothy Mulcahy, a professor ... be leaving UW-Madison to become vice president of research at ... missed, graduate school Dean Martin Cadwallader said in a statement. ...
Cached Biology Technology:UW plans entrepreneurship program to link campus resources 2UW-Milwaukee Chancellor Santiago determined to build on research base 2UW-Milwaukee Chancellor Santiago determined to build on research base 3UW-Madison associate dean, active in stem cells, leaves 2
...
Peptide-affinity Purified Polyclonal Antibody to Sphingolipid Receptor Edg8/S1P5...
...
... Collect eliminates manual data entry by ... into any Windows-based application. Collect is ... countless hours of tedious data entry. ... balances, scales, pH meters, spectrophotometers, force gauges, ...
Biology Products: