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

ng the wet season. The soil can only hold so much water and the rest runs off. The water stored in the soil at the end of the wet season is all that the rainforest trees have to last them through the dry season. The longer the dry season lasts, regardless of how wet the wet season was, the more stressed the trees become and the more susceptible they are to fire.

The researchers say the most likely explanation for the lengthening dry season in the southern Amazon in recent decades is human-caused greenhouse warming, which inhibits rainfall in two ways. First, it makes it harder for warm, dry air near the surface to rise and freely mix with cool, moist air above. And second, it blocks cold front incursions from outside the tropics that could trigger rainfall. The climate models used by the IPCC do a poor job representing these processes, which might explain why they project only a slightly longer Amazonian dry season, says Fu.

The Amazon rainforest normally removes the greenhouse gas carbon dioxide from the atmosphere, but during a severe drought in 2005, it released 1 petagram of carbon (about one-tenth of annual human emissions) to the atmosphere. Fu and her colleagues estimate that if dry seasons continue to lengthen at just half the rate of recent decades, the Amazon drought of 2005 could become the norm rather than the exception by the end of this century.

"Because of the potential impact on the global carbon cycle, we need to better understand the changes of the dry season over southern Amazonia," says Fu.

Some scientists have speculated that the combination of longer dry seasons, higher surface temperatures and more fragmented forests resulting from ongoing human-caused deforestation could eventually convert much of southern Amazonia from rainforest to savanna.

Earlier studies have shown that human-caused deforestation in the Amazon can alter rainfall patterns. But the researchers didn't see a strong signal of defore
'/>"/>

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:3/18/2015)... March 18, 2015 As mobile payments ... revolutionary smart wallets and apps continue to be introduced into ... in the mobile payment industry in focus today are:  NXT-ID, ... (NYSE: BABA ), Apple Inc. (NASDAQ: ... Facebook Inc. (NASDAQ: FB ) NXT-ID, ...
(Date:3/17/2015)... , March 17, 2015  MecklerMedia Corporation (OTCQX: ... exhibition for service robots ever held in ... place on May 11-13, 2015 at the Javits ... for the event include: Acorn Product Development; Axis ... Infranor; Kinova Robotics; Littler; NewBotic Corporation; Neya Systems ...
(Date:3/12/2015)... , March 12, 2015 The mascots ... Brenner Children,s Hospital, part of Wake Forest Baptist Medical ... initiative for the 2015 ACC Men,s Basketball Tournament. Young ... with them and getting their autographs. Brenner ... Baptist. It is the only children,s hospital in northwest ...
Breaking Biology News(10 mins):Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 2Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 3Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 4Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 5Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 6MecklerMedia's RoboUniverse New York Announces Sponsors and Exhibitors, May 11-13, 2015 2
... the parareptiles, a diverse group of bizarre-looking terrestrial vertebrates ... small, slender, agile and lizard-like creatures, while others attained ... and bony spikes on their skulls. The researchers ... by the end-Permian extinction than at any other point ...
... years ago, the understory of late Mesozoic forests was dominated ... Today, only one genus from this group, Equisetum ... a prime candidate for being the oldest extant genus of ... the evolutionary beginnings of the genus Equisetum . Molecular ...
... (SALT LAKE CITY) New findings from University of Utah School of ... in the blood of patients who have chronic fatigue syndrome (CFS). ... study that linked CFS to XMRV. The study, performed by ... Singh, M.D., Ph.D., associate professor of pathology, was published May 4, ...
Cached Biology News:Reptile 'cousins' shed new light on end-Permian extinction 2Newly discovered plant fossil reveals more than age 2Newly discovered plant fossil reveals more than age 3Newly discovered plant fossil reveals more than age 4Comprehensive study finds no link between XMRV retrovirus and chronic fatigue syndrome 2Comprehensive study finds no link between XMRV retrovirus and chronic fatigue syndrome 3
(Date:3/25/2015)... South San Francisco, CA (PRWEB) March 25, 2015 ... Trial Provide Support for Novel Mechanism of Action ... CA, March 25, 2015 – Cytokinetics, Incorporated (Nasdaq: ... to its fast skeletal muscle troponin activator tirasemtiv ... results from a Phase IIa “Evidence of Effect” ...
(Date:3/25/2015)...  The Technology Association of Georgia ... promotion and economic advancement of Georgia,s ... of its Top 40 Innovative Technology Companies in ... group at the 2015 Georgia Technology Summit (GTS) on ... TAG,S Top 40 Awards recognize Georgia ...
(Date:3/25/2015)... Proove Biosciences , a commercial ... announce the success of their commercially supported symposium, ... Optimize the Management of Pain, at the 31st Annual ... Maryland on Thursday, March 19th, 2015. , ... Lynn Webster , M.D., former Florida Society of ...
(Date:3/25/2015)... (PRWEB) March 25, 2015 ... segmented on the basis of products, technology, ... in this report are radar, laser, infra-red, ... encompassing video guidance systems, terrain mapping systems, ... market data Tables and 60 Figures spread ...
Breaking Biology Technology:Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 2Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 3Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 4Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 5Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 6Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 2Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 3Streamline Health, Inc. Named a TAG Top 40 Innovative Technology Company 4Proove Biosciences Hosts Symposium on Incorporating Genetic Testing to Optimize the Management of Pain 2Smart Weapons Market is Estimate to reach $6.1 Billion by 2020 Worth $6.1 Billion by 2020 - New Report by MarketsandMarkets 2Smart Weapons Market is Estimate to reach $6.1 Billion by 2020 Worth $6.1 Billion by 2020 - New Report by MarketsandMarkets 3
... May 25 /PRNewswire-Asia-FirstCall/ -- Biostar,Pharmaceuticals, Inc. (Nasdaq: BSPM ... Hepatitis B medicine,Xin Aoxing Oleanolic Acid Capsule ("Xin Aoxing"), and a ... assembly of its production line for its proprietary Zushima product. , ... ...
... NEW YORK , May 25, 2010 ... biosensor and microprocessor technologies for use in,portable monitoring devices, ... the overall daily activity level of an individual and ... overweight or obese. The bracelet,designed both for children and ...
... May 25, 2010 t2cure GmbH, a biopharmaceutical,company developing and marketing ... t2c001 has been,certified by the European Medicines Agency (EMA). , ... t2c001 is the ... Therapy Medicinal Products (ATMPs). It is a somatic,cell therapy product derived from ...
Cached Biology Technology:Biostar Pharmaceuticals, Inc. Begins Assembly of New Production Line 2Biostar Pharmaceuticals, Inc. Begins Assembly of New Production Line 3Biostar Pharmaceuticals, Inc. Begins Assembly of New Production Line 4SPO Medical Announces Innovative Wellness Bracelet 2SPO Medical Announces Innovative Wellness Bracelet 3SPO Medical Announces Innovative Wellness Bracelet 4SPO Medical Announces Innovative Wellness Bracelet 5t2cure First Company to Have Quality of Cellular Therapeutic Certified by EMA 2t2cure First Company to Have Quality of Cellular Therapeutic Certified by EMA 3t2cure First Company to Have Quality of Cellular Therapeutic Certified by EMA 4
... This antibody recognizes murine IRF7 ... with other related IRF proteins. ... murine IRF7 protein was confirmed ... the 293T cells transfected with ...
Sprague-Dawley rats, 7-8 weeks old, mixed gender; tissue is collected fresh, frozen on dry ice within minutes of sacrifice and stored at -20C; individual tissue weight approx. 0.05 gram....
...
Contains L-glutamine...
Biology Products: