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:9/15/2014)... Sugar is a vital source of energy for both ... makes its way into the cell could lead to ... an increase in the amount of fruits and vegetables ... recently uncovered one of these "pathways" into the cell ... of a strand of spider silk. , To determine ...
(Date:9/15/2014)... of Australia,s leading coral reef ecologists fears that reef ... ecosystem survival that we once thought. , In an ... ARC Centre of Excellence for Coral Reef Studies (Coral ... most important species within reef ecosystems. , In coral ... vital jobs that keep the ecosystem safe and functioning. ...
(Date:9/15/2014)... Earth for the first 500 million years after it ... day, complete with oceans, continents and active crustal plates. ... called the Hadean, has gained substantial new support from ... more than 4 billion years ago with those formed ... possible geological analog for early Earth. , The study ...
Breaking Biology News(10 mins):X-rays unlock a protein's SWEET side 2X-rays unlock a protein's SWEET side 3Specialized species critical for reefs 2Early Earth less hellish than previously thought 2Early Earth less hellish than previously thought 3
... dozens of shark species living in the coastal waters off ... the species, but a survey begun nearly 25 years ago ... populations and their role in marine ecosystems. NOAA scientists ... R.I., recently conducted their ninth coastal shark survey from Florida ...
... colorful leaves adorning the trees are a delight to the ... the United States and East Asia boast lustrous red foliage. ... autumnal hues around the world? A new theory provided by ... at the University of Haifa-Oranim and Prof. Jarmo Holopainen of ...
... team of researchers from Boston University, Harvard Medical School ... that changes a long held paradigm about how bacteria ... that causes human stomach ulcers uses a clever biochemical ... allowing it to move and survive and further colonize ...
Cached Biology News:Scientists conduct shark survey off US East Coast 2Scientists conduct shark survey off US East Coast 3Why are autumn leaves red in America and yellow in Europe? 2Why are autumn leaves red in America and yellow in Europe? 3Uncovering the secrets of ulcer-causing bacteria 2
(Date:9/15/2014)... carbon nanotubes is neat, but Rice University scientists are making ... new fibers created at Rice line up like a fistful ... Mart and his colleagues. , The tricky bit, according to ... journal ACS Nano , is keeping the densely packed ... Left to their own devices, carbon nanotubes form clumps that ...
(Date:9/15/2014)... -- Research and Markets has announced the addition ... Services, by Technology, by Application - Global Forecast to 2018" ... Sequencing (WES) is next-generation technology used for strategically sequencing the ... which is the total of all exons of an organism, ... converted into proteins after translation. It is responsible for the ...
(Date:9/15/2014)... , 15 de septiembre de 2014 La ... llevará a cabo del 12 al 18 de octubre. Como ... (PPTA) y de sus compañías miembro s, la IPAW ... concienciación mundial en torno a la colección de fuentes de ... de plasma al salvar y mejorar las vidas , ...
(Date:9/14/2014)... when it comes to survival strategies. They often create ... for example during treatment with antibiotics. A biofilm is ... slime capsule consisting of sugar chains and "curli". ... the first time created a detailed three-dimensional image of ... the bacterial cell wall, a crucial step in the ...
Breaking Biology Technology:Rice rolls 'neat' nanotube fibers 2Rice rolls 'neat' nanotube fibers 3Global Whole Exome Sequencing (Systems, Kits, Library Preparation, Target Enrichment) Market by Product, by Services, by Technology, by Application - Forecast to 2018 2Global Whole Exome Sequencing (Systems, Kits, Library Preparation, Target Enrichment) Market by Product, by Services, by Technology, by Application - Forecast to 2018 3La International Plasma Awareness Week será una celebración para los donantes 2La International Plasma Awareness Week será una celebración para los donantes 3New insights in survival strategies of bacteria 2
... that the economy is not,only heading towards a recession ... mood during January. However, biotech held steady,with the Burrill ... which posted a January loss of 9.9%, and the ... to ride out extremely volatile capital,markets with less damage ...
... BODY WORLDS 2:,The Original Exhibition of Real Human ... Saturday, February 2nd. The acclaimed exhibition,includes the East ... special feature on,the brain., BODY WORLDS presents ... and unhealthy organs, body section and slices, all,preserved ...
... Pollard Brings the Highest Level of Clinical Immunology ... 1 Genetic,Immunity(R), a US/Hungarian clinical-stage biopharmaceutical company,focused ... platform technology, announced that it has appointed,Richard B. ... Pollard has been a leader in HIV/AIDS research ...
Cached Biology Technology:January Market Jitters Fails to Derail Biotech 2January Market Jitters Fails to Derail Biotech 3January Market Jitters Fails to Derail Biotech 4Maryland Science Center Unveils Anatomical Exhibition, Body Worlds 2, on Saturday, February 2 2Genetic Immunity Announces the Appointment of Richard B. Pollard, M.D. as Chief Medical Officer 2Genetic Immunity Announces the Appointment of Richard B. Pollard, M.D. as Chief Medical Officer 3
... microarrays are derived from Paraffin embedded tissue ... control procedures to ensure the highest quality. ... in one block, sectioned at a thickness ... slides. Sections are large (3-5 mm in ...
ID clarifier: platform...
StemSep Anti-Phycoertherin Tetrameric Antibody Complexes, 2 mL for labeling 1x10 9 cells. Cross-linking Reagent for StemSep Separations of Cells Labeled with PE-conjugated Antibody....
... The PROTEAN II xi multi-cell is for 2-D ... efficient cooling capabilities. The PROTEAN II xi multi-cell ... comb, type of glass plates, and cooling system. ... converted to the PROTEAN II XL multi-cell for ...
Biology Products: