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:3/16/2015)... 16, 2015 Between 16 ... present groundbreaking innovations in biometric identification at the ... .      (Photo: http://photos.prnewswire.com/prnh/20150316/735333 ... is well at the forefront: the company,s all ... in Germany . BiometricGate is ...
(Date:3/12/2015)... 2015 Beta Systems today ... access management (IAM) solution for a fixed price ... System,s new IAM package, customers benefit from the ... multiple IAM implementations across different industries. The new ... as any necessary services and consulting. It spans ...
(Date:3/11/2015)... 11, 2015   The Sync Project™ ... scientifically measure and harness music to improve health. ... and objective measurements of physiology, enabling the study ... in large populations. It is designed for medical ... perform rigorous studies and accelerate the discovery of ...
Breaking Biology News(10 mins):DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 2DERMALOG Presents its Latest Biometric Innovations at the Hannover CeBIT Exhibition, 16 - 20 March 2015 3Beta Systems Fast Forward IAM Available Now: a Standardized IAM Package at a Fixed Price 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 2Introducing The Sync Project, a Global Collaboration Harnessing the Scientific Potential of Music for Health 3
... ITHACA, NY Commercial apple growers in the northeastern ... and insect invasions to tree nutrition and crop load. ... of integrated fruit production (IFP) and organic fruit production ... alternative markets. In a recent issue of HortScience ...
... Today,s most common cultivated strawberry, the familiar Fragaria x vananassa ... a chance hybridization of two wild strawberry species in Europe ... characteristics of both species, including the larger, firmer fruit of ... fruit of F. virginiana . The fact that ...
... the most important fruit trees in the world. Citrus has ... than 4,000 years. Until now, however, the exact genetic origins ... ), lemon ( C. limon ), and grapefruit ( C. ... from China has published a study in the Journal of ...
Cached Biology News:Integrated, organic production systems evaluated for 'liberty' apple 2New research expands genetic base of cultivated strawberry 2Genetic origin of cultivated citrus determined 2
(Date:3/31/2015)... 2015  Biotest Pharmaceuticals Corporation (BPC), a leading developer ... addition of its newest plasma collection center located at ... Arkansas . The over 16,000 square foot state-of-the-art ... 26 th 2015 and brings the total number ... "This facility represents another milestone in our continued ...
(Date:3/31/2015)... SAN FRANCISCO , March 31, 2015  Sonoa ... Melbourne, Australia , has developed a world-first consumer ... health records, medication prescriptions, wearable devices and more. ... John Stewart as its CEO, who brings to ... and corporate advisory, which has included working closely with ...
(Date:3/31/2015)...  University of Illinois, Swanlund ... plenary session address on Monday, May 18 at the ... kicking off a week of more than 160 technical ... RF and microwave technologies with health. Dr. ... Circuits for the Skin," will focus on the experimental ...
(Date:3/30/2015)... With recent advancements in residential solar ... major companies are getting into the Solar Energy wave. ... for renewable energy production, many homeowners are looking to ... is a new solar distribution company in California which ... qualifying homeowners to enjoy the benefits of solar energy ...
Breaking Biology Technology:Biotest Pharmaceuticals Corporation Announces the Opening of its Newest Plasma Collection Facility in Conway, Arkansas 2Investment Banker Appointed CEO of Australian Health Tech Start-Up 2Investment Banker Appointed CEO of Australian Health Tech Start-Up 3Health and Engineering Converge at the 2015 International Microwave Symposium 2Health and Engineering Converge at the 2015 International Microwave Symposium 3Solara Power Announces Residential Solar Power with No Up-Front Fees 2
... May 17 /PRNewswire-FirstCall/ - Aeterna Zentaris Inc. ( ... company specialized in oncology and endocrinology, today announced that ... product designation from the Committee for Orphan Medicinal Products ... AEZS-108 for the treatment of ovarian cancer. AEZS-108, the ...
... , May 17 Soligenix, Inc. (OTC Bulletin Board: SNGX) ... results for the first quarter of 2010. , ... Soligenix,s revenues for the first quarter of 2010 ... the first quarter of 2009. The decreased revenues were primarily a result ...
... Sigma- Aldrich announces the retirement of David Julien , President – ... on his current role in January 2009 .  He served as President ... to January 2009 and before that in a number of senior ... , , , ...
Cached Biology Technology:Aeterna Zentaris Receives Positive Opinion for Orphan Medicinal Product Designation for AEZS-108 for the Treatment of Ovarian Cancer from the Committee for Orphan Medicinal Products of the European Medicines Agency 2Aeterna Zentaris Receives Positive Opinion for Orphan Medicinal Product Designation for AEZS-108 for the Treatment of Ovarian Cancer from the Committee for Orphan Medicinal Products of the European Medicines Agency 3Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 2Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 3Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 4Soligenix Reports First Quarter 2010 Financial Results and Reviews Accomplishments 5Sigma-Aldrich (Nasdaq: SIAL) Announces Executive Management Changes: Retirement of David Julien and Promotion of Joseph Porwoll 2
...
Auto/Zyme Reagent...
HistoScan HRP Kit Universal Goat Kit...
Interact with both DNA and RNA; fluorescence green (Em=525 nm) bound to DNA; and fluorescence red (Em=~650 nm) bound to RNA....
Biology Products: