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:12/17/2014)... , Dec. 15, 2014 Research and Markets ... addition of the "Samsung Galaxy S5 - ... report to their offering. ... totally different sensing technology than the iPhone 5S, ... sensor in its product. The Galaxy ...
(Date:12/17/2014)...  HITLAB SM announced today its completion ... confirm its adherence to current U.S. Food and ... to conduct regulated smart device and smart phone ... safety and research quality. "HITLAB is ... delivery with innovative technology," said Laura Pugliese ...
(Date:12/17/2014)... Dec. 16, 2014 Research and Markets ... of the "Global Chemical Sensor Market 2015-2019" ... http://photos.prnewswire.com/prnh/20130307/600769 One major ... demand for medical sensors in biomedical applications. Chemical ... quick and correct diagnosis during surgical procedures. The ...
Breaking Biology News(10 mins):Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2
... UT Dallas study is revealing new information about a ... and other neurological disorders. This work could one day ... Marco Atzori, associate professor in The University of Texas ... has worked with senior neuroscience student Francisco Garcia on ...
... Rebekah E. Gee MD MPH FACOG, Assistant Professor, ... Health and Medicine, has been chosen to receive a ... Health Leadership Award from the Association of Maternal & ... leadership, vision, and contributions to the health of women, ...
... The University of Michigan,s first human embryonic stem cell line ... registry, making the cells available for federally-funded research. It is ... University of Michigan to be placed on the registry. ... derived in October 2010 from a cluster of about 30 ...
Cached Biology News:Study looks at possible link to hyper-excitability factors in epilepsy, autism and more 2LSUHSC's Gee honored for improving health of women, children and families 2U-M human embryonic stem cell line placed on national registry 2U-M human embryonic stem cell line placed on national registry 3
(Date:12/15/2014)... December 15, 2014 METTLER TOLEDO ... PVM tool, ParticleView V19 with PVM technology ... probe-based particle vision and measurement tool continuously captures ... conditions. ParticleView V19 then automatically prepares a report ... particle size and concentration changes. This compelling blend ...
(Date:12/15/2014)... 2014 Organovo Holdings, Inc. (NYSE MKT: ... delivering breakthrough 3D bioprinting technology,  today celebrated continued ... its exVive3D TM Human Liver Tissue.  The ... commercial release on November 18, has been recognized ... awards for innovation. Most recently, on ...
(Date:12/15/2014)... -- Origin Agritech Limited (NASDAQ GS: SEED) (" Origin ", or ... in China , today announced that the ... September 30, 2014, before the market opens on Thursday, January ... on January 8, 2015, at 8:00 a.m. ET / 9:00 ... results. To participate in the call, please dial +1-888-346-8982 in ...
(Date:12/13/2014)... 13, 2014 CanDiag, Inc., a University ... has changed its name to OncoTab, Inc. , ... where we are today,” said CEO and Chief Science ... applications beyond breast cancer diagnostics to include imaging and ... that evolution.” , Founded in 2011 by Dr. Mukherjee, ...
Breaking Biology Technology:New Real-Time In Situ Probe-Based Video Microscope from METTLER TOLEDO 2Organovo Celebrates a Positive 2014 Reception of its exVive3DTM Human Liver Tissue Product 2Organovo Celebrates a Positive 2014 Reception of its exVive3DTM Human Liver Tissue Product 3Origin Agritech Limited to Announce Fiscal 2014 Annual Financial Results on January 8th, 2015 2Origin Agritech Limited to Announce Fiscal 2014 Annual Financial Results on January 8th, 2015 3CanDiag Inc. Expands Product Scope Under a New Name: OncoTab, Inc. 2
... Cell Lysates Using Cells-to-cDNA II , ... the most commonly used techniques for quantitating changes in , ... working with cell or , ... RNA, DNase I treat the sample to eliminate contaminating , ...
... Fluorescence activated cell sorting (FACS) is a , tool ... individual cells using fluorescent probes that bind specifically to molecules , ... cells of a given population down to the level of a ... Figure 1.Linear Amplification from 1-1000 Cells. , ...
... Remove >90% of mammalian RNA from , ... procedure takes less than 2 hours , Works ... , MICROB Express Bacterial mRNA Purification Kit , ... bacterial RNA isolated from host cells , ...
Cached Biology Technology:Measuring Gene Silencing Effects by RT-PCR Without RNA Isolation 2Measuring Gene Silencing Effects by RT-PCR Without RNA Isolation 3Measuring Gene Silencing Effects by RT-PCR Without RNA Isolation 4Cells-to-cDNA II Using FACS Sorted Cells 2Bacterial RNA Isolation From Infected Eukaryotic Hosts 2Bacterial RNA Isolation From Infected Eukaryotic Hosts 3Bacterial RNA Isolation From Infected Eukaryotic Hosts 4Bacterial RNA Isolation From Infected Eukaryotic Hosts 5Bacterial RNA Isolation From Infected Eukaryotic Hosts 6
... AviTag E. coli Biotinylation Kit, Linear Template is ... coli expression kits. (Cat. No. 3 186 148, ... rapidly generate linear expression constructs by PCR containing ... a combination of T7 RNA polymerase and prokaryotic ...
... The Vibratome Roto-Shake Genie is an ... It performs five different mixing ... and rotating/rolling, as well as a ... The precision-engineered moving portion of the ...
... monoclonal [PRMT5-21] to PRMT5 Arginine methylation ... has only recently been linked to protein ... enzymes have been identified in mammalian cells. ... essential regulatory functions by methylation of key ...
... This complete kit contains ... separations from a total of ... cells, and includes the StemSep ... necessary reagents and buffers for ...
Biology Products: