Navigation Links
Warming climate unlikely to cause extinction of ancient Amazon trees, study finds
Date:12/13/2012

te change is extremely fast, making comparisons with slower changes in the past difficult.

"With a clearer understanding of the relative risks to the Amazon forest, we conclude that direct human impacts such as forest clearances for agriculture or mining should remain a focus of conservation policy. We also need more aggressive action to reduce greenhouse gas emissions in order to minimise the risk of drought and fire impacts to secure the future of most Amazon tree species."

The 12 tree species used in the study are broadly representative of the Amazon tree flora. Samples were collected in Panama, Ecuador, Brazil, Peru, French Guiana and Bolivia.

To determine the age of each tree species researchers extracted and sequenced DNA, analysing the number of genetic mutations. Using a molecular clock approach and population genetic models they estimated how long it would take for each of the species to accumulate the observed number of mutations, providing a minimum age for each species. They determined that nine of the tree species had existed for at least 2.6 million years, seven for at least 5.6 million years, and three for more than 8 million years.

With reference to climatic events that have occurred since those tree species emerged, the authors inferred that the tree species had previously survived warmer climates. Air temperatures across Amazonia in the early Pliocene Epoch (3.6 million to 5 million years ago) were similar to Intergovernmental Panel on Climate Change (IPCC) mid-range projections for the region in 2100. Air temperatures in the late Miocene Epoch (5.3 to 11.5 million years ago) were about the same as IPCC projections for the region in 2100 using some of the highest carbon-emission scenarios.


'/>"/>

Contact: Ed Nash
ed.nash@ucl.ac.uk
44-020-310-83845
University College London
Source:Eurekalert

Page: 1 2

Related biology news :

1. Warming temperatures cause aquatic animals to shrink the most
2. After long-ago mass extinction, global warming hindered species recovery
3. Dusts warming counters half of its cooling effect
4. Rice agriculture accelerates global warming, new research finds
5. New NIST screening method identifies 1,200 candidate refrigerants to combat global warming
6. Increase in metal concentrations in Rocky Mountain watershed tied to warming temperatures
7. Warming causes more extreme shifts of the Southern Hemispheres largest rain band
8. A new global warming culprit: Dam drawdowns
9. Research links extreme summer heat events to global warming
10. Global warming harms lakes
11. No matter the drilling method, natural gas is a much-needed tool to battle global warming
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/16/2014)... human body. Battles are won, lost or sometimes ... stalemate—known as tumor dormancy—can last up to 25 ... is poorly understood. , A new computational ... a Professor of Chemistry at Princeton University, may ... the switch to a malignant state. Published today ...
(Date:10/16/2014)... monocultures can be cultivated efficiently, they are anything ... caused by monoculture cultivation is becoming increasingly evident. ... crop form and are regarded as the sole ... – quite wrongfully, finds Bernhard Schmid, an ecology ... a novel form of agriculture and forestry. After ...
(Date:10/15/2014)... WASHINGTON, N.Y. , Oct. 15, 2014 /PRNewswire/ ... technology solutions for home and community-based care, today ... benefits of implementing Sandata,s Santrax® Electronic Visit Verification™ ... Care Services is a home health company founded ... Texas . The ...
Breaking Biology News(10 mins):Modeling tumor dormancy 2Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3Sandata Announces Case Study with Quality Care Services, Inc. 2
... The Translational Genomics Research Institute (TGen) provides Arizona with ... to the results of an independent analysis released today. ... TGen-led research, a study by the research firm Tripp ... to $321.3 million by 2025. "As we make ...
... September 28, 2009 -- Soybeans contain high ... have antioxidant properties. These molecules can be used ... specific health-beneficial properties and can be used in ... in four forms (α, β, γ, and δ) ...
... biology continue to develop as two of the most ... that the public is almost completely unaware of the ... American adults conducted by Peter D. Hart Research Associates ... 90 percent of Americans think the public should be ...
Cached Biology News:TGen provides Arizona with $77 million in annual economic impact 2TGen provides Arizona with $77 million in annual economic impact 3Eat soybeans to prevent diseases 2Nanotechnology and synthetic biology: What does the American public think? 2
(Date:10/20/2014)... Mapp Biopharmaceutical,s valiant effort to produce ... fight the Ebola outbreak will make the public ... of pharmaceuticals can be, according to Kalorama Information.  ... some may be taken aback by the three-month ... knowledge are well aware of the complex issues ...
(Date:10/20/2014)... Oct. 20, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or ... brings Q3 orders to $5.8 million and provides a good start ... North America and one in the ... new projects at record levels," said Peter Bruijns , President ... the end of Q3 than they have been for any complete ...
(Date:10/20/2014)... BOSTON , Oct. 20, 2014 ... commercialization company tackling big healthcare problems, announced today ... investment round, with participation from Invesco Perpetual, a ... be used to drive PureTech,s existing pipeline forward ... technologies. "PureTech has the scientific creativity to really ...
(Date:10/20/2014)... 2014 Local veterinary surgeon, Dr. Tim ... study of donor stem cells for dogs with osteoarthritis. ... and has performed clinical stem cell therapy for 7 ... determine if a single injection of donor stem cells ... reduce pain and inflammation in the treated joints. ...
Breaking Biology Technology:Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2
... Oct. 30 Cephalon, Inc. (Nasdaq:,CEPH) today announced that ... held on,November 5, 2008, will be webcast live on ... ., Cephalon,s senior management will review the company,s ... will be delivered on Wednesday, November 5, 2008 beginning ...
... - Cytochroma today announced the,appointment of Ulrik Spork to ... on the Company,s Board and replaces Dr. Soren Schifter,who ... remains unchanged at,six members., "We are very pleased ... to drawing on his expertise and experiences as we ...
... Discuss Continued Expansion of DXL(TM) Patent Protection at ... 7th Annual BIO ... InNexus,Biotechnology Inc., (OTC Bulletin Board: IXSBF; TSX VENTURE: IXS;, http://www.ixsbio.com ... antibodies based on its Dynamic Cross Linking,(DXL(TM)) technology, announced today ...
Cached Biology Technology:Cephalon, Inc. to Webcast Analyst Day 2Cephalon, Inc. to Webcast Analyst Day 3InNexus Biotechnology Receives Patent Grants in Europe 2
... is an integrated digital microscope and camera ... equipment setup, optical adjustment or software installation. ... technology, COOLSCOPE combines simplicity and advanced technology ... offers simultaneous viewing of a macro image ...
... microscope is described by end-users to be ... the fundamentals of light microscopy and electronic ... footprint, it does not require much space ... busy lab environment. The DM-BA300 combines Motic's ...
... The TUNEL-based assay kit provides complete ... cells for convenient detection of DNA ... sections. The incorporation of BrdU in ... biotinylated or digoxigenylated methods. Results can ...
... ergonomic microscopes are now available in digital ... DM-BA200 comes packed with Motic's patented Colour ... plug and play digital image capture head. ... a reversed quadruple nosepiece, deliver high quality ...
Biology Products: