Navigation Links
January American Naturalist highlights
Date:1/4/2008

ts. In order to study the consequences of the liberation of such compounds on competitive interactions between plants, Raynaud and his colleagues have developed a new model that simulates the release of these compounds and the uptake of nutrients by plants at the scale of individual roots. "Our model emphasizes the importance of soil water in determining the mobility of nutrients in the soil and therefore which plants will be able to get them," states Xavier Raynaud. "Roots behave essentially as independent units in dry soils, so plants interact primarily through the number of roots they make. However, in wet soils, plants can strongly influence their neighbors by releasing exudates from their roots or by rapidly taking up nutrients. We hope that this model will help unify divergent views of plant competition by providing a more comprehensive view of the mechanisms controlling nutrient fluxes in the soil."


"Nontrophic interactions, biodiversity, and ecosystem functioning: an interaction web model"
Alexandra Goudard (Ecole Normale Suprieure and Universit Pierre et Marie Curie) and Michel Loreau (McGill University)

Most ecological theories deal with simple consumerresource interactions. Scientists at Ecole Normale Suprieure (Paris) and McGill University provide a novel approach to incorporate nontrophic interactions, such as pollination and habitat modification, in ecosystem models, which allows them to study the dynamics of complex interaction webs.

Their model adds nontrophic interactions to a food web in the form of modifications of trophic interactions. It also tracks nutrient fluxes in the food web and hence satisfies the principle of mass conservation. Using this model, they show that nontrophic interactions can profoundly influence ecosystem properties such as species diversity, biomass, and production. In turn, the nature, prevalence, and strength of species interactions depend on species diversity. Counteri
'/>"/>

Contact: Rudy Faust
rfaust@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
Source:Eurekalert

Page: 1 2 3 4 5 6 7 8 9 10 11 12 13

Related medicine news :

1. Align Technology to Announce Fourth Quarter and 2007 Year End Financial Results on January 29, 2008
2. Somanetics Corporation to Release Fourth Quarter and Fiscal 2007 Financial Results and Host Conference Call January 23, 2008
3. January is National Glaucoma Awareness Month
4. Insulet Corporation to Present at the JPMorgan Healthcare Conference on January 8, 2008
5. Echo Healthcare Extends Stockholder Vote on Proposed Merger With XLNT Veterinary Care to January 4, 2008
6. Immtech Investor Conference Call Scheduled for January 3, 2008, at 1 PM
7. National Cervical Cancer Coalition Stresses Importance of Screening and Prevention During January Cervical Health Awareness Month
8. Gentiva(R) Health Services to Present January 8 at JPMorgan Healthcare Conference in San Francisco
9. Hospira to Present at the JPMorgan 26th Annual Healthcare Conference on January 9
10. Biodel Inc. to Present at 26th Annual JPMorgan Healthcare Conference on January 7th, 2008
11. NPS Pharmaceuticals to Present at the JPMorgan 26th Annual Healthcare Conference on January 9, 2008
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... News) -- Pigs, hearts transplanted into baboons survived for ... as previously achieved, researchers report. The work is ... organs to shorten transplant waiting lists. In this ... baboons, abdomens. The genetic engineering and new methods of ... the hearts to survive for more than a year. ...
(Date:8/20/2014)... Reinberg HealthDay Reporter WEDNESDAY, ... cancer cells grow may help doctors diagnose and treat the ... investigators have found that the deadliest skin cancers occur most ... a long history of sun exposure. These lesions also ... Rapid cell growth -- called "high mitotic rate" -- ...
(Date:8/20/2014)... persistent and deadliest infectious diseases in the world, killing ... who study tuberculosis have long debated its origins. New ... Africa to seals and sea lions that brought the ... people there before Europeans landed on the continent. , ... Source of New World Human Tuberculosis," was published in ...
(Date:8/20/2014)... New York, New York (PRWEB) August 20, 2014 ... associated with the use of power morcellators ( http://www.injurybeacon.com/power-morcellator/ ... Liebhard LLP notes that two U.S. Senators from New ... (FDA) to seek a recall of the devices. In ... Charles Schumer, both Democrats, also implored the agency to ...
(Date:8/20/2014)... contrast to evidence that the amygdala stimulates stress ... Research Center, Emory University have found that the ... during the early development of nonhuman primates. , ... Journal of Neuroscience . , The amygdala is ... important for responses to threatening situations and learning ...
Breaking Medicine News(10 mins):Health News:Pigs' Hearts Beat for a Year in Baboons' Abdomens 2Health News:High-Risk Melanomas Often on Head or Neck, Study Finds 2Health News:High-Risk Melanomas Often on Head or Neck, Study Finds 3Health News:New research shows seals and sea lions likely spread tuberculosis to humans 2Health News:New research shows seals and sea lions likely spread tuberculosis to humans 3Health News:Power Morcellator News: Bernstein Liebhard LLP Notes Senators’ Letter Seeking FDA Morcellator Recall 2Health News:Power Morcellator News: Bernstein Liebhard LLP Notes Senators’ Letter Seeking FDA Morcellator Recall 3Health News:Power Morcellator News: Bernstein Liebhard LLP Notes Senators’ Letter Seeking FDA Morcellator Recall 4Health News:Maturing brain flips function of amygdala in regulating stress hormones 2Health News:Maturing brain flips function of amygdala in regulating stress hormones 3
... Red Compounds Financial Problems, According ... July 14 HealthLeaders-InterStudy, a,leading provider of healthcare ... the hospitals in the Los Angeles market are ... doing relatively well financially,and those that are barely ...
... and Blue Shield companies to,promote workplace wellness programs ... Recognizing that chronic,illness accounts for 75 percent ... on" approach to improving employee health and wellness ... prevention,and management. At a press briefing this morning ...
... of Health,and Hospitals announced its intent to award HMS ... and cost avoidance services,to the state,s Medicaid program. This ... the highest score in a competitive procurement process,for the ... the state, HMS recovered more than,$36 million for the ...
... Zimmer Holdings, Inc.,(NYSE: ZMH ; SWX: ZMH) statement:, ... that Zimmer,s,NexGen(R) knee implant had been recalled. In fact, ... used for minimally invasive,surgeries (MIS) and not the implant ... to a single surgical instrument and that additional,instrumentation options ...
... Bring Better Quality of Care and Improved Business Performance ... ... PITTSBURGH, July 14 Vocollect Healthcare Systems, Inc.,and SouthMed, Inc., ... healthcare market, announce a,strategic partnership, whereby SouthMed will resell AccuNurse,voice-assisted care ...
... Optimism is good for heart health, at least among ... Medical Center researcher Robert Gramling, M.D., D.Sc., found that ... cardiovascular disease actually experienced a three times lower incidence ... data did not support the same conclusion among women. ...
Cached Medicine News:Health News:Fragmented Los Angeles Hospital Market Provides Health Systems with Little Leverage to Negotiate Higher Reimbursement 2Health News:Employers Take Active Role in Promoting Workplace Wellness 2Health News:Employers Take Active Role in Promoting Workplace Wellness 3Health News:Louisiana Department of Health and Hospitals Announces Intent to Award Cost Containment Services Contract to HMS 2Health News:Zimmer Holdings Issues Clarification Regarding NexGen Knee System 2Health News:Zimmer Holdings Issues Clarification Regarding NexGen Knee System 3Health News:SouthMed, Inc. and Vocollect Healthcare Systems Announce Reseller Agreement 2Health News:Positive thinking is prescription for the heart 2
(Date:8/20/2014)... Aug. 20, 2014 Reportlinker.com announces that ... its catalogue: Global Coatings for Medical ... This report analyzes the worldwide ... Million by the following Product Segments: Active Coatings, ... report provides separate comprehensive analytics for the US, ...
(Date:8/20/2014)... 20, 2014 ApolloDx™ today announced it will ... a special event at the company,s office in ... 5, 2014. The event, which will start at 10:00 ... www.apollodx.com .    "We believe our ... Jared Bauer , Co-Founder and Managing Partner of ApolloDx. ...
(Date:8/20/2014)... Aug. 20, 2014   Easy Breathe , the fastest growing ... " Easy Blog " - has received more than 4.5 million ... "We are thrilled that so many people are finding our ... of Easy Breathe. "We,re committed to making sleep apnea more widely ... stay informed about sleep apnea news , troubleshooting advice ...
Breaking Medicine Technology:Global Coatings for Medical Devices Industry 2Global Coatings for Medical Devices Industry 3Global Coatings for Medical Devices Industry 4Global Coatings for Medical Devices Industry 5Global Coatings for Medical Devices Industry 6Global Coatings for Medical Devices Industry 7Global Coatings for Medical Devices Industry 8Global Coatings for Medical Devices Industry 9Global Coatings for Medical Devices Industry 10Global Coatings for Medical Devices Industry 11Global Coatings for Medical Devices Industry 12Global Coatings for Medical Devices Industry 13Global Coatings for Medical Devices Industry 14Global Coatings for Medical Devices Industry 15Global Coatings for Medical Devices Industry 16Global Coatings for Medical Devices Industry 17Global Coatings for Medical Devices Industry 18Global Coatings for Medical Devices Industry 19Global Coatings for Medical Devices Industry 20Global Coatings for Medical Devices Industry 21Easy Breathe Blog Emerges as the Go-To Resource for Sleep Apnea Sufferers 2Easy Breathe Blog Emerges as the Go-To Resource for Sleep Apnea Sufferers 3Easy Breathe Blog Emerges as the Go-To Resource for Sleep Apnea Sufferers 4
... at American Society of Clinical Oncology 2009 Annual Meeting ... , , SAN FRANCISCO, June 2 Medivation, ... presentation of new clinical results from a Phase 1-2 ... castration-resistant prostate cancer (CRPC) patients. The new findings, ...
... , Panel Discussant Focuses on Longer Duration of Remission ... Complete Remissions Achieved with Standard Chemotherapy , , ... MTA: CTIC) announced today that at the poster and ... Section at the 2009 American Society of Clinical Oncology ...
Cached Medicine Technology:Medivation Announces Positive New Efficacy Data From Phase 1-2 Trial of MDV3100 in Advanced Prostate Cancer Patients 2Medivation Announces Positive New Efficacy Data From Phase 1-2 Trial of MDV3100 in Advanced Prostate Cancer Patients 3Medivation Announces Positive New Efficacy Data From Phase 1-2 Trial of MDV3100 in Advanced Prostate Cancer Patients 4Medivation Announces Positive New Efficacy Data From Phase 1-2 Trial of MDV3100 in Advanced Prostate Cancer Patients 5Pixantrone Produces High Rates of Complete and Partial Remissions Even Among Aggressive NHL Patients With Extensive Prior Doxorubicin Treatment or Prior Rituximab Treatment 2Pixantrone Produces High Rates of Complete and Partial Remissions Even Among Aggressive NHL Patients With Extensive Prior Doxorubicin Treatment or Prior Rituximab Treatment 3Pixantrone Produces High Rates of Complete and Partial Remissions Even Among Aggressive NHL Patients With Extensive Prior Doxorubicin Treatment or Prior Rituximab Treatment 4Pixantrone Produces High Rates of Complete and Partial Remissions Even Among Aggressive NHL Patients With Extensive Prior Doxorubicin Treatment or Prior Rituximab Treatment 5Pixantrone Produces High Rates of Complete and Partial Remissions Even Among Aggressive NHL Patients With Extensive Prior Doxorubicin Treatment or Prior Rituximab Treatment 6
An enzyme-linked immuno-sorbent assay for the detectionand quantitation of anti-tissue Transglutaminase in serum of patients with Celiac Disease and Dermatitis Herpetiformis....
Jerome Halo Traction Units provide optimum immobilization for unstable injuries of the spine. The Generation 80 superstructure is available with either 2-point (serrated disk), or 3-point (flexion/ex...
... Boston Scoliosis Brace™ for neuromuscular ... a lightweight, soft, and easy ... maximum comfort. The Soft ... of non-cracking orthopedic grade copolymer ...
An indirect immunofluorescence antibody test for the qualitative and semi-quantitative detection of endomysial antibodies (EMA) in human serum as an aid in the diagnosis of celiac disease and dermati...
Medicine Products: