Navigation Links
Models simulate nitrate dynamics in Garonne, Southwest France
Date:1/5/2009

MADISON, WI, DECEMBER 29, 2008 The over-enrichment of fresh, transitional, and marine waters with nitrogen (N) can lead to problems associated with eutrophication, such as a change in species composition of aquatic plants and nuisance algal blooms. In this context, dynamic models of flow and water quality are required to aid the implementation of the Water Framework Directive and to understand the impacts of environmental change.

Scientists from CNRS in Toulouse (France) and the University of Reading (U.K.) described the spatially and temporally complex flow and N dynamics of a major European watershed, the Garonne (62,700 km2) located in southwest France, using multivariate analysis before applying the linked rainfall-runoff HBV and the Integrated Catchment Model of Nitrogen (INCA-N) models to simulate daily flow and N dynamics.

This is the first application of the linked HBV and INCA-N models to a major European river system commensurate with the largest basins to be managed under the Water Framework Directive. Results from the study were published in the November-December 2008 issue of the Journal of Environmental Quality.

The spatial and temporal dynamics in the stream water NO3N concentrations in the Garonne watershed were first described and related to variations in climate, land management, and effluent point-sources using multivariate statistics (PCA, RDA).

Building on this, INCA-N simulations were in accordance with expected flow and seasonal N patterns. In the low and mid reaches of the Garonne, the NO3-N concentrations exhibited a clear seasonal pattern with a peak concentration coinciding with fertilizer applications; that is, results highlighted that 75% of the NO3-N river load in the lowlands came from arable farming. In the upper reaches, climate controls on flow were the most important in determining the NO3-N concentrations which exhibited dilution patterns during high spring flows.

This
'/>"/>

Contact: Sara Uttech
suttech@agronomy.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Page: 1 2

Related biology news :

1. Smithsonian researchers develop models to assess wetland health
2. Arctic climate models playing key role in polar bear decision
3. In computer models and observations, researchers see potential for significant red tide season
4. Models of eel cells suggest electrifying possibilities
5. Swamping bad cells with good in ALS animal models helps sustain breathing
6. New movement models tested at the Smithsonian in Panama
7. Mice stressed in simulated weightlessness show organ atrophy
8. Researchers successfully simulate photosynthesis and design a better leaf
9. Worlds biggest heart model simulated at Université de Montréal
10. Pitt receives $2.5 million to simulate and analyze brain, immune system activity
11. Nitrates in vegetables protect against gastric ulcers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/24/2015)... August 24, 2015 The consulting company ... largest biometrics manufacturer DERMALOG and its customized solutions and products ... Biometrics Company of the Year Award". DERMALOG is particularly successful ... .   -Cross reference: Picture is available at ... On Thursday evening, in South Africa,s ...
(Date:8/20/2015)... , Aug. 20, 2015   Sensory, Inc ... improving the user experience and security of consumer ... today announced that its TrulySecure™ is ... software to be FIDO Certified™. The ... compliance with the FIDO UAF (Universal Authentication Framework) ...
(Date:8/18/2015)... PRINCETON, N.J. , Aug. 18, 2015 ... be a key contributor to the Submission ... hosted by IRISS, a non-profit forum. Dedicated to ... IRISS provides a neutral platform for industry, ... to share information and work towards a ...
Breaking Biology News(10 mins):Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 2Frost & Sullivan Honors DERMALOG with Biometrics Prize for Achievements in Africa 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 2TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 4TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 5Navitas, a Key Contributor in IRISS Forum Webinar 2Navitas, a Key Contributor in IRISS Forum Webinar 3
... 9, 2012 New research reveals that insulin applied ... elastic fibers in cultures of human aortic smooth muscle ... molecular and cellular mechanisms of diabetic vascular disease. ... the American Journal of Pathology . "Our ...
... the University of Iowa have worked out the exact function ... and is involved in several muscular dystrophies. The findings, which ... could be used to develop rapid, large-scale testing of potential ... critical sugar chain onto an important membrane protein called dystroglycan. ...
... Hackers invading databases is just the tip of the iceberg ... Internet activity focus to social networks and today a number ... Hezbollah, Hamas and other armed groups that have been included ... been shown in a new study conducted by Prof. Gabriel ...
Cached Biology News:Insulin therapy may help repair atherosclerotic lesions in diabetic patients 2Study reveals enzyme function, could help find muscular dystrophy therapies 2Study reveals enzyme function, could help find muscular dystrophy therapies 3A 'friend' request from al-Qaida 2
(Date:9/2/2015)... ... September 02, 2015 , ... Drug companies increasingly ... BCC Research reveals in its new report that the U.S. will generate ... category and generates the most market demand. , BCC Research examines plant-derived ...
(Date:9/2/2015)... , Sept. 2, 2015 Aytu BioScience, ... developing treatments for urological and related conditions, announced today ... planned private placement convertible note financing, raising a total ... tranches totaling $3.175 million. Josh ... from this private placement are intended to be used ...
(Date:9/2/2015)... , September 2, 2015 BiondVax Pharmaceuticals ... the National Institute of Allergy and Infectious Diseases (NIAID), part ... Department of Health and Human Services (HHS), to launch a ... the United States in the 2015-16 timeframe. The ... candidate, Multimeric-001 (M-001), as a primer vaccine, which would be ...
(Date:9/2/2015)... ... September 02, 2015 , ... Whitehouse Laboratories is excited to ... Ed Resources upcoming educational seminar and training session on Extractable & Leachable testing. ... will provide Updates & Case Studies on the Latest Compliance Implications of USP ...
Breaking Biology Technology:Plant-derived Compounds Poised to Assume Greater Role in Global Drug Markets, According to BCC Research 2Plant-derived Compounds Poised to Assume Greater Role in Global Drug Markets, According to BCC Research 3Aytu BioScience Completes $5.175 Million Private Placement 2Aytu BioScience Completes $5.175 Million Private Placement 3BiondVax Announces Intent to Launch a Phase 2 Trial in the United States in Collaboration with the U.S. National Institutes of Health 2BiondVax Announces Intent to Launch a Phase 2 Trial in the United States in Collaboration with the U.S. National Institutes of Health 3Whitehouse Laboratories to Participate in Pharm Ed Resources Extractables, Leachables, & Elemental Impurities Educational Seminar 2Whitehouse Laboratories to Participate in Pharm Ed Resources Extractables, Leachables, & Elemental Impurities Educational Seminar 3
... Top 25 Global Pharmaceutical Companies Select Drug ... Visualization, MOUNTAIN VIEW, Calif., April 2, 2008 ... provider of software,strategic consulting, and regulatory services for ... 25 global pharmaceutical,companies have become customers for its ...
... 1, 2008 MiMedx Group, Inc.,(OTC Bulletin Board: ... AYXC), today reported that the contemplated reverse stock ... related name change, to,MiMedx Group, Inc., was approved ... a result of the reverse split and redomestication, ...
... Installation and Major Data Migration in ... United States and Abroad, CHICAGO, April 1, ... signed an agreement with the Cleveland,Clinic, a not-for-profit ... deploy the syngo(R) Dynamics cardiology image,management and reporting ...
Cached Biology Technology:Pharsight Signs Two New DMX(R) License Customers 2Pharsight Signs Two New DMX(R) License Customers 3MiMedx Group Announces Post-split Name Change 2MiMedx Group Announces Post-split Name Change 3Siemens Signs Multi-Year Agreement With Cleveland Clinic to Deploy Enterprise-Wide Cardiology PACS 2
Sf21 cells derived from Spodoptera frugiperda ovarian cells are recommended for high-level production of recombinant proteins. Higher expression levels of some proteins are seen due to the larger ce...
... offers the most comprehensive, cost-effective solution ... have incorporated unprecedented quality into both ... includes proven detection chemistries and antibodies ... TechMate protocol. It also includes our ...
Functionally tested for consistent G-banding of chromosomes....
... Cell Medium is optimized for serum-free growth ... In this protein-free medium, Sf9 cultures routinely ... cells/ml with viabilities above 95%. This medium ... color from X-gluc staining of pBACgus recombinants ...
Biology Products: