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:8/29/2014)... rise of the Tibetan plateau -- the largest topographic ... for both its profound effect on climate and its ... GSA Bulletin , Katharine Huntington and colleagues employ ... using modern and fossil snail shells to investigate the ... , Views range widely on the timing of ...
(Date:8/28/2014)... bacterial culprits that may drive inflammatory bowel diseases (IBD) ... own intestinal immune responses as a guide. , The ... Cell . , Trillions of bacteria exist within the ... the development and progression of IBD. Yet it,s thought ... a person,s susceptibility to IBD and its potential severity. ...
(Date:8/28/2014)... your neighbors than traditional cigarettes, but still release ... study from USC. , Scientists studying secondhand smoke ... exposure to harmful particles, with close-to-zero exposure to ... harmful metals in second-hand e-cigarette smoke were found ... contains high levels of polycyclic aromatic hydrocarbons ...
Breaking Biology News(10 mins):Snails tell of the rise and fall of the Tibetan Plateau 2Snails tell of the rise and fall of the Tibetan Plateau 3Snails tell of the rise and fall of the Tibetan Plateau 4Snails tell of the rise and fall of the Tibetan Plateau 5Snails tell of the rise and fall of the Tibetan Plateau 6Snails tell of the rise and fall of the Tibetan Plateau 7Yale study identifies possible bacterial drivers of IBD 2Second-hand e-cig smoke compared to regular cigarette smoke 2
... biotechnology company located in Worcester Polytechnic Institute,s Life ... received a contract from the U.S. Defense Advanced ... program in tissue regeneration. Under the terms of ... Bioengineering Institute (BEI), and the university will continue ...
... fingerprints of what your cells are up to and Dr. ... You,ve likely heard about metabolites; your physician probably screens ... your annual physical. Scientists suspect we have about 3,000 metabolites ... compounds in our bodies. Dr. Sreekumar, a ...
... requires constant maintenance, but how do skin cells know ... March 23, 2009 issue of the Journal of ... that skin fibroblasts use a protein called PPARβ/δ to ... Their results highlight how communications between different cell types ...
Cached Biology News:CellThera and WPI advance in regeneration study 2Molecular fingerprints point the way to earlier cancer diagnosis and more targeted treatment 2Molecular fingerprints point the way to earlier cancer diagnosis and more targeted treatment 3Molecular fingerprints point the way to earlier cancer diagnosis and more targeted treatment 4Time (and PPAR-beta/delta) heals all wounds 2Time (and PPAR-beta/delta) heals all wounds 3
(Date:8/28/2014)... 2014  Next month, executives from clinical trial marketing firm ... beginning with Patient-Centered Clinical Trials 2014 , to be ... , September 4-5. Patient recruitment experts Bonnie A. ... will share insights on the benefits of employing an ... – from media to mobile apps – can be used ...
(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)... A new market research report detailing ... from Strategic Consulting, Inc., the leading information resource ... Review, Fourth Edition: Global Review of Microbiology Testing ... compares microbiology test volumes, market values and methods ... and forecasts future volumes and market values through ...
(Date:8/28/2014)... Diego, CA (PRWEB) August 28, 2014 ... Pipette.com is offering a promotion for Eppendorf ... Pipette.com customers to purchase the highest quality tubes ... Tubes are ideal for customers doing chemical, medical, ... lab technicians who are not regularly able to ...
Breaking Biology Technology:BBK Worldwide Leads Sessions at Key September Events 2Armetheon Completes $7.0 Million Series A Financing 2Armetheon Completes $7.0 Million Series A Financing 32 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 22 Billion Industrial Microbiology Tests Conducted for Product Quality and Safety Worldwide 3Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 2Eppendorf Safe Lock Centrifuge Tube Promotion Now Available at Major Pipette Distributor Pipette.com 3
... ... Treatment of Stuttering, ROANOKE, Va., July ... research and,clinical center ( http://www.stuttering.org ) specializing in ... with advanced behavioral, electronic and computer technologies that,significantly improve the ...
... for Aging Services Technologies, (CAST) to Expedite Emerging ... 15 Samarion CEO Mark Rodgers was,recently named ... to help lead the charge to expedite emerging ... an international coalition ensuring that technology solutions,attain their ...
... ... Achieve Benefits of H.R. 6331, GREAT RIVER, N.Y., July ... and services for health and,human services organizations, today announced dates ... electronic,prescribing and the new Medicare bill passed by the U.S. ...
Cached Biology Technology:Video: New, Advanced Therapy Program Helps People Who Stutter Acquire Fluent Speech 2Video: New, Advanced Therapy Program Helps People Who Stutter Acquire Fluent Speech 3Samarion CEO Mark Rodgers Named CAST Commissioner 2Netsmart Technologies Web Seminar Helps Behavioral Health Organizations Understand Electronic Prescribing and the Importance of New Medicare-Related E-Prescribing Legislation 2Netsmart Technologies Web Seminar Helps Behavioral Health Organizations Understand Electronic Prescribing and the Importance of New Medicare-Related E-Prescribing Legislation 3
Immunogen: Synthetic peptide: N(171) H G F L S A D Q QL I K(183) Storage: -20 C, Avoid Freeze/Thaw Cycles...
... polyclonal to Uridine Phosphorylase 1 ( Abpromise ... Antigen: Synthetic peptide: MAATGANAEK AESHNDCPVR ... GTDRYAMYK, corresponding to amino acids 1-99 of ... Entrez Gene ID: 7378 ...
Request Info...
Lingo-1 (K-13)...
Biology Products: