Navigation Links
NASA study refutes claims of drought-driven declines in plant productivity, global food security
Date:8/26/2011

A new, comprehensive study by an international team of scientists, including scientists at Boston University in the US and the Universities of Viosa and Campinas in Brazil, has been published in the current issue of Science (August 26, 2011) refuting earlier alarmist claims that drought has induced a decline in global plant productivity during the past decade and posed a threat to global food security.

Those earlier findings published by Zhao and Running in the August 2010 issue of Science (Vol. 329, p. 940) also warned of potentially serious consequences for biofuel production and the global carbon cycle. The two new technical comments in Science contest these claims on the basis of new evidence from NASA satellite data, which indicates that Zhao and Running's findings resulted from several modeling errors, use of corrupted satellite data and statistically insignificant trends.

The main premise of Zhao and Running's model-based study was an expectation of increased global plant productivity during the 2000s based on previously observed increases during the 1980s and 1990s under supposedly similar, favorable climatic conditions. Instead, Zhao and Running were surprised to see a decline, which they attributed it to large-scale droughts in the Southern Hemisphere.

"Their model has been tuned to predict lower productivity even for very small increases in temperature. Not surprisingly, their results were preordained," said Arindam Samanta, the study's lead author. (Samanta, now at Atmospheric and Environmental Research Inc., Lexington, MA, worked on the study as a graduate student at Boston University's Department of Geography and Environment.)

Zhao and Running's predictions of trends and year-to-year variability were largely based on simulated changes in the productivity of tropical forests, especially the Amazonian rainforests. However, according to the new study, their model failed miserably when teste
'/>"/>

Contact: Patrick Farrell
pmfarrel@bu.edu
617-358-1185
Boston University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. New study shows that Floridas reefs cannot endure a cold snap
2. New study finds no nutritional difference between free-range and cage-produced eggs
3. Clinical study shows young brains lack the wisdom of their elders
4. No need to nag: study finds doctors nutrition advice hits home early
5. MU study links inactivity with risk factors for Type 2 diabetes
6. Study confirms food security helps wildlife
7. New CU-Boulder study reveals bacteria from dog feces in outdoor air of urbanized air
8. Mount Sinai receives $3.4 million for largest study of personalized medicine in the clinical setting
9. Study aims to improve fuel economy by 30 percent
10. Life on the wind: Study reveals how microbes travel the Earth
11. Study: New process that can save at-risk cancer patients is effective and significantly less costly
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/29/2014)... have been blamed for increasing the risk of ... family history of schizophrenia, are widely accepted. Others, ... a parasite transmitted by soil, undercooked meat and ... A new study by Gary Smith, professor of ... Pennsylvania,s School of Veterinary Medicine, used epidemiological modeling ...
(Date:10/29/2014)... number of chemicals from household and industrial products are ... bodies. But for most of them, scientists have yet ... taken the first step toward doing that by estimating ... new method is published in the ACS journal ... and colleagues note that the risks to human health ...
(Date:10/29/2014)... on September 19, 2014, leading geneticist and humanitarian Prof. ... Sciences and Medicine at the University of Washington in ... Aviv University, was awarded the 2014 Lasker-Koshland Special Achievement ... honorary degree from TAU, Prof. King was the 2012-2013 ... for the past 18 years she has been the ...
Breaking Biology News(10 mins):Penn vet professor investigates parasite-schizophrenia connection 2Penn vet professor investigates parasite-schizophrenia connection 3Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2
... The Aplastic Anemia & MDS International Foundation (AA&MDSIF) is ... Drug Administration (FDA) has expanded the label for VIDAZA ... found that Vidaza is the only agent that extends ... shown to delay progression to acute myelogenous leukemia (AML) ...
... with gold purify the air when they are lit ... Technology experts have discovered. Associate Professor Zhu Huai ... said that glaziers in medieval forges were the first ... sizes. Professor Zhu said numerous church windows ...
... MobileSRO(TM) and MobileCampus(TM) Wireless Data Communications Link School ... Security, Administration ... International,Inc. (OTC Bulletin Board: BKYI), a leader in finger-based ... of MobileSRO(TM) and MobileCampus(TM), silent, secure,emergency alert and management ...
Cached Biology News:Air-purifying church windows early nanotechnology 2BIO-key(R) Announces Emergency Alert and Management Solutions for Schools and Campuses 2BIO-key(R) Announces Emergency Alert and Management Solutions for Schools and Campuses 3
(Date:10/30/2014)... Ras Al Khaimah, UAE (PRWEB) October 30, 2014 ... the appointment of Dr. James A. Manganello, Chairman of the ... (NSCEC) of The Bahamas. The appointment was made by ... The Bahamas on September 24th, 2014. , More ... Cell Therapy and Research Bill , Prime Minister Perry Christie ...
(Date:10/30/2014)... in the development of quantum technologies has been proposed ... published today (28 October) in Nature Communications , ... a new type of flexibly designed microscopic trap for ... and specialised superfast computers, often depend on harnessing the ... these tiny particles are hugely problematic because of the ...
(Date:10/27/2014)... 27, 2014 The Italian ... exhibit and sell its artificial "lower limb", after ... patent.      (Photo: http://photos.prnewswire.com/prnh/20141027/713097 ... fighting, the definitive judgement has arrived: Roadrunnerfoot, the ... and accessible hi-tech prostheses with composite materials, has ...
(Date:10/27/2014)... MA (PRWEB) October 27, 2014 ... profit. SoundConnect , an industry leading unified ... its partners and agents to deliver cloud-based audio ... accelerate growth opportunities. , With SoundConnect’s Q4 ... every twenty-five video and/or web conferencing licenses sold, ...
Breaking Biology Technology:Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 2Grace Century’s Stem Cell Biobank Project Announces Chairman’s Appointment to National Stem Cell Ethics Committee of The Bahamas 3Italian Lower Limb Prosthesis Company Wins Lawsuit Against German Giant Ottobock 2SoundConnect Unveils Q4 Partner Incentives 2
... resources to empower transplant patients ... ... Pharma US,Inc. (Pink Sheets: ALPMF), a leader in the field ... transplant,professional organization, announced a collaborative partnership to jointly,develop further materials ...
... Pharmaceuticals,Inc. announced today that BC Detect(SM), the ... available from Panacea Laboratories. BC,Detect(SM) is a ... identification,of recurrence among women successfully treated for ... Pharmaceuticals, is certified under the,Clinical Laboratory Improvement ...
... of anti-infectives, to ... on pexiganan development, WELLESLEY HILLS, Mass., Oct. 17 ... of rights to pexiganan, Michael Zasloff, M.D. has joined the,company,s ... the African clawed frog while at NIH (National Institutes of,Health) ...
Cached Biology Technology:Astellas Pharma US, Inc. and The International Transplant Nurses Society (ITNS) Collaborate on Content for Transplant Experience Program 2Astellas Pharma US, Inc. and The International Transplant Nurses Society (ITNS) Collaborate on Content for Transplant Experience Program 3Panacea Pharmaceuticals Announces the Availability of BC Detect(SM), a Serum- Based Diagnostic Test for Breast Cancer 2Panacea Pharmaceuticals Announces the Availability of BC Detect(SM), a Serum- Based Diagnostic Test for Breast Cancer 3Panacea Pharmaceuticals Announces the Availability of BC Detect(SM), a Serum- Based Diagnostic Test for Breast Cancer 4MacroChem Announces Michael Zasloff, M.D., Ph.D. Joins Company's Scientific Advisory Board 2MacroChem Announces Michael Zasloff, M.D., Ph.D. Joins Company's Scientific Advisory Board 3MacroChem Announces Michael Zasloff, M.D., Ph.D. Joins Company's Scientific Advisory Board 4MacroChem Announces Michael Zasloff, M.D., Ph.D. Joins Company's Scientific Advisory Board 5
... CyScribe GFX Purification Kit, 50 purifications. ... cDNA probesProvides efficient removal of unincorporated ... reactions with superior yields of labeled ... purification of cDNA labeled by either ...
... are complete ready-to-use reagents for the isolation ... specifically formulated for the isolation of genomic ... specifically formulated for the isolation of genomic ... DNAzol Reagents can be used for restriction ...
Detects activated caspases in living cells. Simple/sensitive/straight-forward procedure takes only 30 minutes. Results can be analyzed by flow cytometry/fluorescence microscopy/fluorescence plate rea...
Apoptosis Detection Systems and Reagents...
Biology Products: