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:6/17/2015)... PALM BEACH GARDENS, Fla. , June 17, ... identity management solutions, today announced that its U.are.U ... by Togo,s Eateries, Inc., ... based fast casual sandwich chain, to increase security, ... (POS). The Crossmatch fingerprint readers enable instant, non-repudiable identity ...
(Date:6/15/2015)... , June 16, 2015 According ... Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, ... to 2020" published by MarketsandMarkets, The Natural Language Processing ... a CAGR of 18.4% for the forecast period 2015-2020. ...   46 F igures spread   through 155 ...
(Date:6/10/2015)... , June 10, 2015 ... Sensor Market by Technology (Ultrasound, TOF, Structured Light, ... Electronics, Entertainment, Automotive) and by Geography - Trends ... MarketsandMarkets, the market is expected to reach $3,319.71 ... 25.51% between 2015 and 2020. Browse ...
Breaking Biology News(10 mins):Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 2Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 3Natural Language Processing Market Worth $13.4 Billion by 2020 2Natural Language Processing Market Worth $13.4 Billion by 2020 3Natural Language Processing Market Worth $13.4 Billion by 2020 4Natural Language Processing Market Worth $13.4 Billion by 2020 53D Sensor Market Worth $3,319.71 Million by 2020 23D Sensor Market Worth $3,319.71 Million by 2020 33D Sensor Market Worth $3,319.71 Million by 2020 4
... 15-year study published in Acta Obstetricia et Gynecologica ... Societies of Obstetrics and Gynecology, indicate that human error ... birth. Inadequate fetal monitoring, lack of clinical skills, and ... often cited in Norwegian compensation claims following birth asphyxia. ...
... of people in a crowd, we could make on the fly ... person to pass through a turnstile. The latter resembles the model ... is able to detect the passage of individual DNA molecules through ... DNA molecules are diluted in a solution containing ions and are ...
... scientific team has discovered a gene associated with a ... variant may be an actual cause of this form ... children. "Because asthma is a complex disease, with ... recurrent asthma occurring between ages two and six," said ...
Cached Biology News:Human error most common cause of birth asphyxia 2Graphene nanoribbons for 'reading' DNA 2Novel gene variant found in severe childhood asthma 2
(Date:7/1/2015)... ... July 01, 2015 , ... ... combat pathogen transmission. CTI’ new Medical Joysticks have an impermeable molecular barrier ... have an operator control device that will increase healthcare worker safety and reduce ...
(Date:6/30/2015)... ... June 30, 2015 , ... Students and faculty from ... first half of “Integrative Biotechnology,” an applied biotechnology course team-taught by faculty members ... course combines students from both universities and is taught on both continents. , ...
(Date:6/30/2015)... June 30, 2015  NASA astronaut Kjell Lindgren , ... on his first mission to the International Space Station ... to 9 a.m. EDT Tuesday, July 7. Lindgren ... City, Russia . The interviews will be ... highlighting his mission training. To schedule an interview, ...
(Date:6/30/2015)... ... June 30, 2015 , ... ... will provide new insights on mechanics of fecal microbiota transplantation in C. difficile ... study the microbiome of patients undergoing fecal microbiota transplantation (FMT) as a treatment ...
Breaking Biology Technology:Sanitized Medical Joysticks for a Safer and Healthier Work Environment 2Rivier University and Beijing City University Academic and Cultural Exchanges Begin 2NASA Astronaut Preps for First Space Station Mission, Available for Media Interviews 2uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 2uBiome and OpenBiome Partner for Microbiome Study in FMT Patients 3
... Spine, LLC, a medical device company focused on developing ... degenerative disc disease, today announced a 46% sales increase ... the revenue improvement, RSB Spine Chief Executive Officer John ... rewarding considering the overall spine market contraction in 2011, ...
... Therapeutics (NYSE Amex: CXM) today announced that it is scheduled ... Annual OneMedForum Conference in San Francisco. (Logo: ... held at the Parc 55 Wyndham in San Francisco and ... at 4:00 p.m. Pacific. The 5th Annual OneMedForum ...
... the Global Probiotics Council (GPC), a committee formed by ... of the fifth annual Young Investigator Grant for Probiotics ... the amount of $50,000, to promising young researchers. This ... role of probiotics and gastrointestinal microbiota in health and ...
Cached Biology Technology:Cardium to Present at Upcoming Investor Conferences 2Fifth Cycle of Probiotics & Microbiota Research Grant Announced 2Fifth Cycle of Probiotics & Microbiota Research Grant Announced 3Fifth Cycle of Probiotics & Microbiota Research Grant Announced 4
Anti-human L-Ficolin, Clone GN4, Monoclonal Antibody...
14-3-3 tau Antibody Shipping Temperature: HOT Storage Temperature: -20C...
Applications: Western blotting Stability: Room temperature, indefinitely ...
... Rabbit Antibody to ARG. Vasopressin ... vasopression peptide. Cells are found in ... fibers are found throughout the hypothalmus ... perfused tissue. Immunogen: ...
Biology Products: