Navigation Links
Drought and fire in the Amazon lead to sharp increases in forest tree mortality
Date:4/17/2014

Ongoing deforestation and fragmentation of forests in the Amazon help create tinderbox conditions for wildfires in remnant forests, contributing to rapid and widespread forest loss during drought years, according to a team of researchers.

The findings show that forests in the Amazon could reach a "tipping point" when severe droughts coupled with forest fires lead to large-scale loss of trees, making recovery more difficult, said Jennifer Balch, assistant professor of geography, Penn State.

"We documented one of the highest tree mortality rates witnessed in Amazon forests," Balch said. "Over the course of our experiment, 60 percent of the trees died with combined drought and repeated fire. Our results suggest that a perfect firestorm, caused by drought conditions and previous fire disturbance, crossed a threshold in forest resistance."

Balch noted that climate change is expected to warm the air in the Amazon region by several degrees and substantially reduce regional precipitation, making understanding the interactions between droughts and fires even more important. "However, even before any prediction of Amazon climate warming occurs, our study demonstrates that drought and fire are already driving forest dieback," she said.

The eight-year study is the largest and longest-running fire experiment in tropical forests. The team of researchers burned 50-hectare forest plots in the southeastern Amazon, a region prone to the effects of climate change.

The plots were burned every year, every three years or not at all. The timeframe for the study included 2007, a year of severe drought. By comparing the tree deaths for the plots each year, the researchers could assess the effect of drought on fire intensity and tree deaths.

"Drought causes more intense and widespread fires," said lead author Paulo Brando, Instituto de Pesquisa Ambiental da Amaznia, Carnegie Institution for Science and Woods Hole Research Center. "Four times more adult t
'/>"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. UC geographers develop a system to track the dynamics of drought
2. Pilot Islamic-compliant livestock insurance product in Africa pays pastoralists in drought-prone Kenya
3. Drought and downing equal vulture supermarkets
4. Amazon rainforest more able to withstand drought than previously thought
5. New book addresses consequences of drought in arid regions
6. Researchers discover protein that helps plants tolerate drought, flooding, other stresses
7. Drought, river fragmentation forcing endangered fish out of water, biologist finds
8. Monsoon failure key to long droughts in Southwest
9. Plants adapt to drought but limits are looming, study finds
10. Drought in the Horn of Africa delays migrating birds
11. Plant stress paints early picture of drought
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Drought and fire in the Amazon lead to sharp increases in forest tree mortality
(Date:8/22/2014)... , August 22, 2014 /PRNewswire/ ... http://www.researchandmarkets.com/research/mtm27l/biometrics_market ) has announced the addition ... America 2014-2018"  report to their offering.  ... , ,Biometrics is a technology that ... based on their physical or behavioral ...
(Date:8/22/2014)... Thomson Reuters , a leading source of information ... the University of California, Riverside in its 2014 list ... our times." , To generate the list, the company ... researchers whose published work has had enormous impact. , ... 3,200 individuals who published the greatest number of highly ...
(Date:8/22/2014)... at the 29th Annual International Papillomavirus Conference shows ... Inc. combats three types of human papillomavirus, including ... cervical cancer. , When tested in several cultured ... HPV-16, HPV-18 and HPV-11 cells, according to Louise ... presented the findings at the Seattle conference. The ...
Breaking Biology News(10 mins):Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 2Biometrics Market in North America 2014-2018: Key Vendors are 3M Cogent, Cross Match, NEC and Safran SA 35 UC Riverside scientists among world's most influential scientific minds 2
... University scientist Chittaranjan Kole was awarded the Outstanding Crop ... He was one of three scientists to receive the ... the field of crop science. He also chaired a ... this month, "Genomics and Breeding of Climate Resilient ...
... out of research conducted on the edge of the ... Gorge in Tanzania since that produced by Louis and ... special issue of the prestigious Journal of Human ... the Bernard Price Institute for Palaeontological Research, and Professor ...
... consumer products such as shampoos, gels, hair dyes and ... food crops, as reported in a paper in the ... of Sciences . Manufactured nanomaterials are man-made materials ... scale. Their effects on human health and the environment ...
Cached Biology News:Dawn of humanity illuminated in special journal edition 50 years after the Leakeys 2Soybeans susceptible to man-made materials in soil 2Soybeans susceptible to man-made materials in soil 3
(Date:8/22/2014)... in the scientific journal PLoS One , ... effect of serotonin on sensitivity to pain using ... "Serotonin is a small molecule known to be ... from the control of sleep and appetite, to ... is also popularly thought to contribute to feelings ...
(Date:8/22/2014)... The Global and China Diabetes Drugs Industry ... state of the Diabetes Drug industry in Global and ... the industry, including definitions, applications and industry chain structure. ... provided with a focus on history, developments, trends and ... international and Chinese situation is also offered. , The ...
(Date:8/22/2014)... Nerium International, the go-to, buzzworthy skincare ... again. Nerium will showcase its signature NeriumAD® Age-Defying ... Cream to Hollywood’s elite at the official Giving ... Primetime Emmy® Awards. , Developed from cutting-edge research ... show that NeriumAD night cream dramatically reduces the ...
(Date:8/21/2014)... 21, 2014 DNA vaccine pioneer ... its development of JRC-LAMP-vax, an innovative and safe potential ... IC studies began this month in Hawaii, moving the ... , The Japanese red cedar releases pollen that causes ... Mountain Cedar pollen wreaks similar havoc in Colorado, New ...
Breaking Biology Technology:From happiness to pain: Understanding serotonin's function 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 3Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 2Nerium International Joins Television’s Biggest Stars at Backstage Creations Giving Suite at the 66th Primetime Emmy Awards 3Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 2Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 3Relief for Allergy Sufferers Finally in Sight: Immunomic Therapeutics Closes in on Treatment for Hay Fever in Japan, U.S. 4
... Caliper Life,Sciences, Inc. (Nasdaq: CALP ) today ... Small and Mid Cap Growth Conference in Naples, ... 4:40 p.m. EST. Kevin,Hrusovsky, President and CEO of ... business. The live webcast can be accessed at, ...
... Candidate Represents Potential New Short-Course Treatment Option for ... Serious Gram-Positive Skin Infections, Including MRSA, CAMBRIDGE, ... TARG ) announced today that it has,submitted a ... and Drug,Administration (FDA) for its lead antibiotic candidate, ...
... PROENCY will provide real-world clinical data on the ... Boston Scientific,Corporation (NYSE: BSX ) today announced ... PROENCY (PROMUS(TM), ENdeavor(R) and CYpher(R)) European,registry. The registry ... It will collect real-life clinical outcome data for ...
Cached Biology Technology:Targanta Submits Oritavancin New Drug Application 2Targanta Submits Oritavancin New Drug Application 3Targanta Submits Oritavancin New Drug Application 4Boston Scientific Announces Start of Major European Registry Assessing Different Olimus-Eluting Stents 2Boston Scientific Announces Start of Major European Registry Assessing Different Olimus-Eluting Stents 3Boston Scientific Announces Start of Major European Registry Assessing Different Olimus-Eluting Stents 4
... Simultaneously perform 96 assays on four ... four microarray slides with 96 (6mm x ... protein, gene expression, or screening analysis studies. ... compression fit gasket, eliminating the presence of ...
... is an automated multiplexing platform that uses ... pathogen sequence detection and pharmacogenetics applications. Multiple ... to an open and flexible electronic microarray, ... until all tests sites have been utilized. ...
... with sequence siTrio siRNA --- a ... target gene of interestis our most popular product. ... 75% knockdown of your target gene when used ... and confirmation of optimal transfection with one of ...
The Bio-Plex Manager version 3.0 to 4.0 workstation software upgrade kit is used to upgrade existing Bio-Plex Manager version 3.0 software to version 4.0 security edition software....
Biology Products: