Navigation Links
Risk of Amazon rainforest dieback is higher than IPCC projects
Date:10/21/2013

A new study suggests the southern portion of the Amazon rainforest is at a much higher risk of dieback due to stronger seasonal drying than projections made by the climate models used in the latest report by the Intergovernmental Panel on Climate Change (IPCC). If severe enough, the loss of rainforest could cause the release of large volumes of the greenhouse gas carbon dioxide into the atmosphere. It could also disrupt plant and animal communities in one of the regions of highest biodiversity in the world.

Using ground-based rainfall measurements from the past three decades, a research team led by Rong Fu, professor at The University of Texas at Austin's Jackson School of Geosciences, found that since 1979, the dry season in southern Amazonia has lasted about a week longer per decade. At the same time, the annual fire season has become longer. The researchers say the most likely explanation for the lengthening dry season is global warming.

"The dry season over the southern Amazon is already marginal for maintaining rainforest," says Fu. "At some point, if it becomes too long, the rainforest will reach a tipping point."

The new results are in stark contrast to forecasts made by climate models used by the IPCC. Even under future scenarios in which atmospheric greenhouse gases rise dramatically, the models project the dry season in the southern Amazon to be only a few to 10 days longer by the end of the century, and therefore the risk of climate change-induced rainforest dieback should be relatively low.

The report appears this week in the journal Proceedings of the National Academy of Sciences.

"The length of the dry season in the southern Amazon is the most important climate condition controlling the rainforest," says Fu. "If the dry season is too long, the rainforest will not survive."

To see why the length of the dry season is such a limiting factor, imagine there is heavier than usual rainfall duri
'/>"/>

Contact: Marc Airhart
mairhart@jsg.utexas.edu
512-471-2241
University of Texas at Austin
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Field Museum scientists estimate 16,000 tree species in the Amazon
2. LSU research responsible for naming 15 new species of Amazonian birds
3. Garcinia Cambogia Weight Loss Supplement from Revocure is now Back in Stock on Amazon
4. Amazon River exhales virtually all carbon taken up by rain forest
5. No-win situation for agricultural expansion in the Amazon
6. Ecology, economy and management of an agro-industrial Amazon frontier
7. Researchers question evaluation methods for protected areas in the Amazon
8. From the Amazon rainforest to human body cells: Quantifying stability
9. Amazon deforestation brings loss of microbial communities
10. Deforestation in the Amazon equals net losses of diversity for microbial communities
11. Climate warming unlikely to cause near-term extinction of Amazon trees, but threats remain
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Risk of Amazon rainforest dieback is higher than IPCC projects
(Date:11/4/2014)... study examining only marketing directed at children on ... has found that the majority of black, middle-income ... marketing tactics. , Authored by Arizona State University ... is the first to examine the use of ... fast food restaurants and its relationship to demographics. ...
(Date:11/3/2014)... -- Research and Markets has announced the addition ... and Companies" to their offering. This ... have already started to play an important role in the ... old fashioned bone marrow transplants. Role of cells in drug ... a part of medical practice. Stem cells are ...
(Date:11/2/2014)... , James Dacey explores the ways in which physicists ... innovations from the lab into the commercial market. , ... companies as they move from prototype to product is ... physics-based inventions are usually far from market-ready when initially ... lot more complicated than had been originally thought. , ...
Breaking Biology News(10 mins):Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3The 'valley of death' facing physics start-ups 2
... lobe dementia ,Frontal lobe dementia (Frontotemporal Dementia, FTD) ... is the form of dementia that occurs most frequently in ... in the frontal lobe where large numbers of brain cells ... part of the brain and constitutes about 30% of the ...
... J. Craig Venter, Energy Bioscience Institute,s Chris Somerville ... Department of Energy Joint Genome Institute (DOE JGI) ... March 25-27, 2009 in Walnut Creek, Calif. ... of renewable energy strategies, biomass conversion to biofuels, ...
... GAINESVILLE, Fla. Older, active people who have a drink ... according to a report today from a University of Florida ... and Drugs . Although people 50 or older in ... they performed worse on special tests after having moderate amounts ...
Cached Biology News:Blood test predicts chance of dementia 2Venter, Somerville and Church highlight DOE/JGI genomics of energy and environment meeting 2After a few drinks, older adults more impaired than they think 2After a few drinks, older adults more impaired than they think 3
(Date:11/21/2014)... 20, 2014 Polaris Group announced today ... its Phase 1 trial of ADI-PEG 20 in ... of malignant pleural mesothelioma (MPM) and non-squamous non-small ... trials on ADI-PEG 20, both as monotherapy and ... of several other indications, including breast cancer, melanomas, ...
(Date:11/21/2014)... SAN DIEGO , Nov. 20, 2014  Cytori Therapeutics ... Marc Hedrick , M.D. will present live at VirtualInvestorConferences.com ... 4, 2014 TIME:    11:15 am PT / 2:15 ... this URL into your browser,s address bar: http://bit.ly/1B2KGaL ... time and receive event updates. This will ...
(Date:11/18/2014)... SAN BRUNO, Calif. , Nov. 18, 2014 ... is a platinum sponsor of the 10th Annual World Stem ... and regenerative medicine stakeholders. The 2014 World Stem Cell Summit ... San Antonio, Texas . ... the discovery and development of lifesaving cures and therapies, convening ...
(Date:11/18/2014)... 17, 2014 Cirrascale Corporation ... blade-based and rackmount computing infrastructure, today announced it ... accelerator throughout its GPU-enabled blade server and high-performance ... company’s latest proprietary 80-lane Gen3 PCIe switch-enabled risers, ... Tesla K80 dual-GPU accelerator cards in a single ...
Breaking Biology Technology:Polaris Group Announces Treatment of First Patient in Phase 1 Study of ADI-PEG 20 plus Pemetrexed and Cisplatin in Malignant Pleural Mesothelioma And Non-Squamous Non-Small Cell Lung Carcinoma 2Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 2Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 3Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 4Cord Blood Registry Sponsors 2014 World Stem Cell Summit 2Cord Blood Registry Sponsors 2014 World Stem Cell Summit 3Cirrascale® Expands Multi-GPU Peering Solutions with Support for New NVIDIA Tesla K80 Dual-GPU Accelerators 2Cirrascale® Expands Multi-GPU Peering Solutions with Support for New NVIDIA Tesla K80 Dual-GPU Accelerators 3
... 12 Odyssey Thera, Inc.,announced today that the ... No. 7,306,914, entitled "Protein-fragment Complementation,Assays (PCA) in whole ... infectious disease and gene therapy." This is the,twelfth ... The patent describes a method for detecting protein-protein,interactions ...
... "Rolling" NDA for Intravenous Iclaprim in cSSSI; Electronic Submission of ... First Modules due Before ... ARPN) announced today the enrolment and dosing of the first ... the treatment,of hospital-acquired pneumonia (HAP) / ventilator-associated pneumonia,(VAP) / healthcare-associated ...
... (Nasdaq:,INSM), today announced that it has been awarded ... (MDA). The grant is expected to cover a,substantial ... 24-week,Phase 3 enabling trial in patients with Myotonic ... biopharmaceutical company with extensive,expertise in biologics and orphan ...
Cached Biology Technology:Odyssey Thera Granted U.S. Patent for Animal Imaging 2First Patients Enrolled in Phase II Trial With Intravenous Iclaprim in HAP/VAP/HCAP 2First Patients Enrolled in Phase II Trial With Intravenous Iclaprim in HAP/VAP/HCAP 3First Patients Enrolled in Phase II Trial With Intravenous Iclaprim in HAP/VAP/HCAP 4First Patients Enrolled in Phase II Trial With Intravenous Iclaprim in HAP/VAP/HCAP 5Insmed Awarded $2.1 Million by Muscular Dystrophy Association 2Insmed Awarded $2.1 Million by Muscular Dystrophy Association 3
... 48° Fixed Angle Polypropylene Rotor ... Series, IEC Centra CL3/CL3R** and Centra-MP4/MP4R*. ... quiet operation. /MP4, ,EXCLUSIVE polypropylene rotor ... can be repeatedly autoclaved. Polypropylene ...
The 891 45° Fixed Angle Rotor is designed to provide aerosol containment and can be removed from a centrifuge (seal entact) and opened under an environmental hood....
... The Xcise is a powerful technology ... throughput proteome analysis. High quality sample ... untrained user. , The Xcise is a ... for high throughput proteome analysis. It combines ...
Extra Large bottle for hybridization 300 x 70mm...
Biology Products: