Navigation Links
Amazon forest shows unexpected resiliency during drought
Date:9/21/2007

Drought-stricken regions of the Amazon forest grew particularly vigorously during the 2005 drought, according to new research.

The counterintuitive finding contradicts a prominent global climate model that predicts the Amazon forest would begin to "brown down" after just a month of drought and eventually collapse as the drought progressed.

Instead of hunkering down during a drought as you might expect, the forest responded positively to drought, at least in the short term," said study author Scott R. Saleska of The University of Arizona. "It's a very interesting and surprising response."

UA co-author Kamel Didan added, "The forest showed signs of being more productive. That's the big news."

The 2005 drought reached its peak at the start of the Amazon's annual dry season, from July through September. Although the double whammy of the parched conditions might be expected to slow growth of the forest's leafy canopy, for many of the areas hit by drought, the canopy of the undisturbed forest became significantly greener -- indicating increased photosynthetic activity.

Saleska, a UA assistant professor of ecology and evolutionary biology, and his colleagues at the UA and at the University of So Paulo in Brazil used data from two NASA satellites to figure out that undisturbed Amazon forest flourished as rainfall levels plummeted.

"No one had looked at the observations that are available from satellites," said Didan, an associate research scientist in the UA's department of soil, water and environmental science. "We took the opportunity of the most recent drought, the 2005 drought, to do so."

"A big chunk of the Amazon forest, the southwest region where the drought was severest, reacted positively," said Didan, a NASA-EOS MODIS associate science team member.

The study, "Amazon Forests Green-up during 2005 drought," is online in the current issue of Science Express, the early-online version
'/>"/>

Contact: Mari N. Jensen
mnjensen@email.arizona.edu
520-626-9635
University of Arizona
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Amazon symposium to address large-scale conservation
2. Amazon source of 5-year-old river breath
3. Assessing the Amazon Rivers sensitivity to deforestation
4. Woods Hole Research Center plans controlled burn in Amazon rainforest
5. Ants, not evil spirits, create devils gardens in the Amazon rainforest, study finds
6. NASA satellite data provides rapid analysis of Amazon deforestation
7. Logging doubles threat to the Amazon, rivaling clear-cutting, study suggests
8. Amazon trees much older than assumed, raising questions on global climate impact of region
9. Why the Amazon rainforest is so rich in species
10. Satellites show Amazon parks, indigenous reserves stop forest clearing
11. Amazonian terra preta can transform poor soil into fertile
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/29/2014)... that the exposure to tar tended to be lower ... Similarly, exposure to nicotine tended to be lower. ... cigarette in several countries around the world. Previous studies ... in the smoke of these cigarettes are lower than ... chemicals in the smoke are not necessarily linked to ...
(Date:9/29/2014)... According to a NASA story from 2009, "human activities in ... fire emissions issue. Palm oil is increasingly grown for use ... fats in processed foods. It has become the most widely ... in recent years to surpass that of soybean oil. , ... has to be cleared to grow the crop, and the ...
(Date:9/29/2014)... team says recently identified radiation detection properties of a ... for homeland security and medical advances. , In a ... of Optics Letters , UT Arlington Physics Professor ... to fabricate transparent nanoscintillators by heating nanoparticles composed of ... formed. A scintillator refers to a material that ...
Breaking Biology News(10 mins):Slim cigarette smokers not exposed to more harmful chemicals 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 3
... 2008The 2008 American Society for Microbiology (ASM) BD ... presented to Stephen C. Edberg, Professor, Department of ... of Medicine, and Director, Clinical Microbiology Laboratory, Yale-New ... award recognizes a distinguished scientist for research accomplishments ...
... be the first recipient of a prestigious award given by ... Meeting of the Ecological Society of America on August 3. ... an outstanding record of informing their political decision-making with ecological ... figure that has a sharp appreciation for local and global ...
... 28, 2008The 2008 American Society for Microbiology (ASM) ... is presented to Steven A. Rosenberg, Chief of ... Services University of the Health Sciences, and Professor ... and Health Sciences. Sponsored by Abbott Laboratories Diagnostics ...
Cached Biology News:American Society for Microbiology honors Stephen C. Edberg 2American Society for Microbiology honors Steven A. Rosenberg 2
(Date:9/30/2014)... Back in the 1970’s, many companies calculated their office ... included space for circulation and file storage. “It was ... Nidea Corporate Real Estate / ITRA Global , a ... however, 250 square feet per employee became the norm. ... 175 to 225 square feet, and over the next few ...
(Date:9/29/2014)... of diagnostics today, with imaging techniques like MRI ... NMR (nuclear magnetic resonance) increasing steeply over the ... resolution and quality still limit these techniques because ... is hyperpolarization, which involves injecting the patient with ... the distribution and fate of specific molecules in ...
(Date:9/29/2014)... Research and Markets  has announced the ... & Services, End-User , Application - Global Forecast to ... The global oligonucleotide synthesis market is expected to reach ... growing at a CAGR of 9.8% from 2014 to ... the basis of products and services, applications, end users, ...
(Date:9/29/2014)... involve a range of resource and environmental problems. ... resin and a clever recycling strategy, Uppsala researchers ... alternative. Their study will be presented soon in ... think our discovery can open several doors to ... the future, says Daniel Brandell, Associate Professor at ...
Breaking Biology Technology:ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 3A safer approach for diagnostic medical imaging 2A safer approach for diagnostic medical imaging 3Oligonucleotide Synthesis (Diagnostics, PCR, QPCR, Gene Synthesis, NGS, DNA, RNAi) Market - Global Forecast to 2019 2Oligonucleotide Synthesis (Diagnostics, PCR, QPCR, Gene Synthesis, NGS, DNA, RNAi) Market - Global Forecast to 2019 3Smart, eco-friendly new battery to solve problems 2
... CAMBRIDGE, Mass., Jan. 13 Verenium Corporation,(Nasdaq: ... the development of next-generation cellulosic,ethanol and high-performance ... compliance with the continued listing requirements of ... that it had fallen out of,compliance with ...
... January 15th at 1:00PM PTNEW YORK, Jan. 13 ... announced that Michael S. Weiss, the Company,s Chairman and ... J.P. Morgan 27th Annual Healthcare Conference being held in ... Thursday, January 15th at 1:00pm PT and will be ...
... Jan. 13 Burnham Institute for Medical ... and license agreement with Johnson & Johnson ... The agreement is Burnham,s first broad-based partnership ... agreement, Burnham will provide J&JPRD with access ...
Cached Biology Technology:Verenium Regains Compliance With Nasdaq Continued Listing Requirement 2Verenium Regains Compliance With Nasdaq Continued Listing Requirement 3Keryx Biopharmaceuticals to Present at the J.P. Morgan 27th Annual Healthcare Conference 2Burnham Announces Assay Development and License Agreement with Johnson & Johnson Pharmaceutical Research & Development, L.L.C. 2
Human SDNSF/MCFD2 Biotinylated Affinity Purified PAb...
... Nucleon HT, 1 kit. Facilitates the ... paraffin-embedded sections and hard tissue requiring proteinase ... high quality DNA from 50 preparations of ... Category: DNA/RNA Synthesis & Purification, Purification and ...
Homo sapiens alcohol dehydrogenase 5 (class III), chi polypeptide (ADH5), mRNA....
Phospho-p70 S6 Kinase (T229) Affinity Purified PAb...
Biology Products: