Navigation Links
Eutrophication makes toxic cyanobacteria more toxic
Date:12/6/2010

Continued eutrophication of the Baltic Sea, combined with an ever thinner ozone layer, is favouring the toxic cyanobacterium Nodularia spumigena, reveals research from the University of Gothenburg, Sweden.

"There are several species of cyanobacteria, or blue-green algae, that can form surface blooms in the Baltic Sea," explains Malin Mohlin from the University of Gothenburg's Department of Marine Ecology. "Which species ends up dominating a bloom depends partly on how they deal with an increased amount of UV light and a shortage of nutrients. Nodularia spumigena is most toxic when there is little nitrogen in the water but sufficient amounts of phosphorus."

As a result, wastewater treatment processes that concentrate on removing nitrogen can make cyanobacterial blooms more toxic. Wastewater therefore needs to be cleared of both nitrogen and phosphorus.

Mohlin's research shows that Nodularia spumigena can be expected to be most toxic at the beginning of a bloom in July. At that time there is generally more phosphorus than nitrogen in the water, and the cyanobacteria have not yet to float to the surface but are found deeper in the water where they have not yet been exposed to UV light.

Surface blooms of cyanobacteria, which are a type of phytoplankton, have increased in both frequency and magnitude in the Baltic Sea in recent decades, and researchers are divided on the cause. Some put it down to eutrophication an excess of nutrients in the water caused by human emissions of nitrogen and phosphorus over the past 150 years. Others have studied the Baltic Sea's bottom sediment and argue that this is a natural phenomenon that has been ongoing for more than 7,000 years and is due instead to climate variations.

Different species of nitrogen-fixing cyanobacteria bloom at different times. Aphanizomenon species tend to bloom from May to June, but from July to August the toxic species Nodularia spumig
'/>"/>

Contact: Malin Mohlin
malin.mohlin@marecol.gu.se
46-031-786-2954
University of Gothenburg
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Researchers call for nitrogen and phosphorus reductions to combat eutrophication in aquatic systems
2. MU scientist develops salmonella test that makes food safer, reduce recalls
3. Supercomputer makes it possible to develop a Brazilian Global Climate System Model
4. Humidity makes gecko feet stickier
5. Genomic haircut makes worlds tiniest genome even smaller: UBC research
6. Pitt/Iowa team finds cellular structural molecule can be toxic: Makes pneumonia worse
7. Neuronal diversity makes a difference, says Carnegie Mellon study
8. What makes a good egg and healthy embryo?
9. Selenium makes more efficient solar cells
10. Why (smart) practice makes perfect
11. New retrieval method makes studying cancer proteins easier
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Eutrophication makes toxic cyanobacteria more toxic
(Date:1/22/2015)... 2015 /PRNewswire/ - Today, FindBiometrics, the leading source of biometrics industry ... new website design. "When we launched FindBiometrics 12 ... Peter O,Neill , founder and CEO of FindBiometrics. "Now it,s ... from the key players on a very broad scale.  We ...
(Date:1/22/2015)... Showcase, Hall E -   EyeLock Inc. , a market ... showcase its EyeLock ID technology integrated in a 3D printed ... Oak Ridge National Laboratory (ORNL) at the 2015 ... technology is being used to validate the driver and authorize ...
(Date:1/22/2015)... , Jan. 16, 2015  A man-made form of ... and other mental capabilities in adults with mild cognitive ... study led by researchers at Wake Forest Baptist Medical ... diagnosed with amnesic mild cognitive impairment (MCI) or mild ...
Breaking Biology News(10 mins):Identity Industry Leading Publication Debuts New Look As Biometrics Hit Mainstream 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 3Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 2Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 3
... tasty, but don’t count on them to prevent ... Cancer Epidemiology, Biomarkers & Prevention, researchers based at ... Research Center report that lycopene, an antioxidant predominately ... cancer. In fact, the researchers noted an ...
... prestigious international journal, the British Journal of Obstetrics and ... by increases in clinical reasons for caesareans such as ... due to societal factors. , The research project looked ... 2003 (more than 430,000 births) and analysed ...
... of the world’s largest and least studied freshwater ... raising hopes that the threatened species can be ... (CI), World Wildlife Fund (WWF), the Cambodian Fisheries ... captured and released an 11-kilogram (24.2-pound) female Cantor’s ...
Cached Biology News:No magic tomato? Study breaks link between lycopene and prostate cancer prevention 2Study shows dramatic increase in Caesarean sections 2Rare soft-shell turtle, nesting ground found in Cambodia 2Rare soft-shell turtle, nesting ground found in Cambodia 3
(Date:3/5/2015)... (PRWEB) March 05, 2015 Plant disease ... this summer at the Annual Meeting of The American ... to be released online now at APSnet.org/meet . ... for the meeting, to be held August 1-5, 2015 ... Special Sessions, Field Trips, Workshops, and committee meetings, all ...
(Date:3/5/2015)... 2015 Bi-Biomics today announced a ... stain additive. The improvement in histological quality provided ... present in all daughter cells. , After processing ... was analyzed at 1000-1600x using light microscopy. ... in all daughter cells displayed predominant binary features ...
(Date:3/5/2015)... SAN DIEGO and TORONTO ... APTO, TSX: APS), a clinical-stage company developing new therapeutics ... cancer, today announced that William G. Rice , ... at the upcoming 27th Annual ROTH Conference on Tuesday, ... the The Ritz Carlton, Laguna Niguel, CA. ...
(Date:3/5/2015)... Mar. 05, 2015 Research and Markets ... "Mature Biotech Outlook 2015: New Therapy Ventures Pave ... All biotech companies - Gilead (GILD), ... past year, have given a positive return and hence ... been able to select therapy/niche indication where the high ...
Breaking Biology Technology:American Phytopathological Society Announces Annual Meeting Daily Schedule 2Aptose Biosciences to Present at the 27th Annual ROTH Conference 2Aptose Biosciences to Present at the 27th Annual ROTH Conference 3Mature Biotech Outlook 2015: New Therapy Ventures Pave the Way for Success 2Mature Biotech Outlook 2015: New Therapy Ventures Pave the Way for Success 3
... July 1 SenesTech, Inc., a biotechnology corporation working ... appointment of George M. Siegel as Vice President of ... years of business development experience in executive management positions. ... of Directors for BrightStar Information Technology Group, Inc., Director ...
... , , CITY OF INDUSTRY, Calif. and HONG KONG, June ... that Excalibur,s Ocean LaLa has successfully completed its inaugural Taiwan Strait ... internet news sites, including the Taiwan Sun, and the Qatar Tribune. ... launched a cruise service with China on Sunday, making it the ...
... 30 Microfluidics, a wholly owned subsidiary of ... Particle Sciences Inc. (PSI) have formed a strategic ... advanced and reliable nanotechnology and formulation methods available ... (APIs). , , Particle Sciences is a ...
Cached Biology Technology:SenesTech Announces New Vice President of Business Development 2Excalibur International Marine (49% Owned by EFT BioTech Holdings) Completes Inaugural Passenger Crossing of Taiwan Strait 2Excalibur International Marine (49% Owned by EFT BioTech Holdings) Completes Inaugural Passenger Crossing of Taiwan Strait 3Particle Sciences and Microfluidics Collaborate to Share Formulation and Nanotechnology Expertise for Pharmaceutical Drug Product Development, Analysis and Commercialization 2Particle Sciences and Microfluidics Collaborate to Share Formulation and Nanotechnology Expertise for Pharmaceutical Drug Product Development, Analysis and Commercialization 3
... Adept CE 4100 high pressure pump ... precision, with software drive compensation, reducing pulsing ... are selectable in 0.001mL steps. , The ... and bio-compatible., Pumps may be programmed from ...
High affinity antibodies recognizes HSP70 protein from human cardiac tissue. Could be used for Westerb blotting application, ELISA....
Recommended for use as a cell culture substratum at 0.1-0.2 mg/cm 2 or 5-10 μl/cm 2 . Optimal concentration depends on cell type as well as the application or research objectives. Type B...
Monoclonal antibodies conjugated with rhodamine...
Biology Products: