Navigation Links
Bad news for coastal ocean: less fish out, means more nitrogen in
Date:1/28/2008

Montreal, January 29, 2008 A Canada-U.S. research team has found that commercial fisheries play an unexpected role in the decline of water quality in coastal waters. In the latest issue of Nature Geoscience, Roxane Maranger and Nina Caraco explain that the collapse of the fisheries from decades of over fishing has played a significant role in disturbing the balance between nitrogen entering and leaving costal water systems.

The study, the first to examine the worlds 58 coatal regions, shows how failing to maintain ecosystems in a sustainable manner has wide-ranging consequences. Using data provided by the United Nations, Maranger and Caraco found that commercial fishing has played an important, yet declining, role in removing man-made nitrogen from coastal waters.

Fish accumulate nitrogen as biomass, and when humans move fish from the ocean to the table through commercial fisheries, they are returning part of this terrestrial nitrogen generated by humans back to the land, said Maranger, a biology professor at the Universit de Montral (Canada).

Caraco, an aquatic biogeochemist at the Cary Institue of Ecosystem Studies (Millbrook, New York, U.S.) notes: While nitrogen is essential to plant and animal life in oceans, human export of nitrogen from land to ocean has resulted in exploding nitrogen levels in coastal waters over the past century. Nitrogen-rich fertilizer thats applied to farmland eventually makes its way into coastal waters via a network of streams and rivers. Fertilizer run-off is a significant source of nitrogen pollution to many coastal regions around the world.

Four decades ago, commercial fishing removed the equivalent of 60 percent of the nitrogen from coastal oceans that entered as fertilizers. Today, this figure has dropped to 20 percent. From a historical perspective, this is bad news, says Maranger. Increased nitrogen levels in coastal ocean ecosystems throughout the world have resulted in excessive plant growth, lack
'/>"/>

Contact: S-J Desjardins
sylvain-jacques.desjardins@umontreal.ca
514-343-7593
University of Montreal
Source:Eurekalert

Page: 1 2

Related biology news :

1. Low oxygen in coastal waters impairs fish reproduction
2. Acid rain has a disproportionate impact on coastal waters
3. Springer will publish Journal of Coastal Conservation
4. Abel to receive posthumous Ocean and Coastal Leadership award
5. Resilience concepts poised to aid management of coastal marine ecosystems
6. Generalist bacteria discovered in coastal waters may be more flexible than known before
7. Less Arctic ice means higher risks, experts warn
8. Nitrogen -- the silent species eliminator
9. Study reveals that nitrogen fertilizers deplete soil organic carbon
10. When accounting for the global nitrogen budget, dont forget fish
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/1/2014)... ago, electron microscopy revealed the presence of tiny blob-like ... But scientists still don,t know what they do ... believed to be crucial to the life of a ... disease treatment., In the Journal of Cell Biology ... from various backgrounds, from biophysics to cell biology, to ...
(Date:8/31/2014)... discovered that ,good, cholesterol is turned ,bad, by a ... was found to damage ,good, HDL cholesterol, which removes ... , Low levels of HDL, High Density Lipoprotein, are ... MG being common in the elderly and those with ... from the British Heart Foundation (BHF) and published in ...
(Date:8/31/2014)... challenges in modern medicine is developing drugs that are ... and side-effects to the patient. Such properties are directly ... Ideally, the drug should have a shape that is ... binds it with high specificity. Publishing in Nature ... acid that can impact the 3D structure of bioactive ...
Breaking Biology News(10 mins):Scientists call for investigation of mysterious cloud-like collections in cells 2Sugar substance 'kills' good HDL cholesterol, new research finds 2A new synthetic amino acid for an emerging class of drugs 2A new synthetic amino acid for an emerging class of drugs 3
... almost seven years in secret. Most people did ... characterization department at Sandia National Laboratories was contributing important ... anthracis, the spores that cause the disease anthrax. The ... several news media offices and to two U.S. senators. ...
... HOUSTON, Aug. 21, 2008 Noise can be irritating ... and maybe even 60-foot whales in the Gulf of Mexico. ... that man-made noise may be a cause of stress for ... a five-year study show that noise pollution especially noise ...
... DNA into the space of a typical chromosome, a ... material it contains. "It is like compacting your ... Emeritus in Physics at the University of Chicago. ... showing that these and related organisms may have evolved ...
Cached Biology News:FBI unveils science of anthrax investigation 2FBI unveils science of anthrax investigation 3Unique study shows oil, gas seismic work not affecting Gulf sperm whales 2Unique study shows oil, gas seismic work not affecting Gulf sperm whales 3Exploding chromosomes fuel research about evolution of genetic storage 2Exploding chromosomes fuel research about evolution of genetic storage 3
(Date:9/1/2014)... Albany, NewYork (PRWEB) September 01, 2014 ... Pharma, Biotech and Diagnostics report provides comprehensive understanding ... and agreements entered into by the worlds leading ... detailed understand and analysis of how and why ... flexibility of a prospective partner’s negotiated deals terms ...
(Date:8/31/2014)... August 31, 2014 This is ... state of the Epoxy Hardener industry in ... overview of the industry, including definitions, applications and ... domestic market analysis are provided with a focus ... the market. A comparison between the international and ...
(Date:8/29/2014)... New York (PRWEB) August 29, 2014 ... valued at $5.6 billion in 2019. It is ... from 2013 to 2019, and was valued at ... report published by Transparency Market Research. , For ... visit: http://www.transparencymarketresearch.com/companion-diagnostics-market.html . , The research report, ...
(Date:8/29/2014)... 29, 2014 Local veterinarian, Dr. Keith ... are seeking candidates to participate in an investigational study ... The ultimate goal of this study is to determine ... one or two arthritically affected joints can help reduce ... Candidates for the current investigational study must be older ...
Breaking Biology Technology:Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 2Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 3Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 4Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2
... TALLAHASSEE, Fla., April 13, 2012  The Large Urology ... urologists, today disputed a study published this week ... leaders stressed that the study grossly misrepresents the ... physicians for adopting evidence based clinical protocols. They ...
... 12, 2012 Shire plc (LSE: SHP, NASDAQ: ... quarter 2012 earnings on Thursday April 26, 2012. ... EDT Investor conference call time: 14:00 BST / 09:00 EDT, ... Angus Russell, Chief Executive Officer and Graham Hetherington, Chief Financial Officer ...
... informatics tools, increases the likelihood that it will be possible ... the brain without having to measure every aspect of it. ... brain in silicothe goal of the proposed Human Brain Projecta ... opens to a world of predictive biology," says Henry Markram, ...
Cached Biology Technology:Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 2Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 3Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 4Shire plc: First Quarter 2012 Results Date Notification - April 26, 2012 2Data mining opens the door to predictive neuroscience 2
MMP-20 Immunogen: Activated recombinant human MMP-2 Storage: -20 C, Avoid Freeze/Thaw Cycles...
Rabbit anti-T-box 6...
Anti-Rsk2/MAPKAP Kinase 1b, #0 SK2/MAPKAP K1 beta Smartpool&t 3T3 cell lysate Non-specific Control Pool , #D 1X Universal Buffer...
...
Biology Products: