Navigation Links
Extinction most likely for rare trees in the Amazon rainforest
Date:8/13/2008

Common tree species in the Amazon will survive even grim scenarios of deforestation and road-building, but rare trees could suffer extinction rates of up to 50 percent, predict Smithsonian scientists and colleagues in the Aug. 12 issue of the journal Proceedings of the National Academy of Science.

How resilient will natural systems prove to be as they weather the next several decades of severe, human-induced global change? The debate is on between proponents of models that maximize and minimize extinction rates.

The Amazon basin contains about 40 percent of the world's remaining rainforest. One of the fundamental characteristics of tropical forests is the presence of very rare tree species. Competing models of relative species abundance, one based on Fisher's alpha statistic and the other based on Preston's lognormal curve, yield different proportions of rare trees in the forest.

Thirty years ago Stephen P. Hubbell, senior scientist at the Center for Tropical Forest Science of the Smithsonian Tropical Research Institute and distinguished professor in the Department of Ecology and Evolution at the University of California, Los Angeles, and his colleague Robin Foster, now at the Field Museum in Chicago, set up a unique experiment to monitor the growth, birth and death of more than 250,000 tropical trees on Panama's Barro Colorado Island. This large "forest dynamics plot" would generate the data needed to build good models that include rare species.

Today the Center for Tropical Forest Science coordinates a Global Earth Observatorya network of 20 such forest study sites in 17 countries, which maintains "actuarial tables" for more than 3 million trees.

Hubbell works with data from the network to develop and test his neutral theory of biodiversityan attempt to find a unified explanation of large, complex biological systems that accurately predicts the outcome of major ecological and evolutionary forces of change.

In this offering, t
'/>"/>

Contact: Beth King
kingb@si.edu
703-487-3770, ext. 8216
Smithsonian Tropical Research Institute
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Oceans on the precipice: Scripps scientist warns of mass extinctions and rise of slime
2. Smithsonian hosts tropical extinction debate in Panama
3. Rare Antarctic fossils reveal extinction of tundra before full polar climate arrived
4. Ivory poaching at critical levels: Elephants on path to extinction by 2020?
5. Newly discovered monkey is threatened with extinction
6. 1/3 of reef-building corals face extinction
7. The mystery of mass extinctions is no longer murky
8. Woolly-mammoth gene study changes extinction theory
9. Climate change hastens extinction in Madagascars reptiles and amphibians
10. Over 50 percent of oceanic shark species threatened with extinction
11. CITES caviar export quotas remain steady for beluga sturgeon despite threat of extinction
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Extinction most likely for rare trees in the Amazon rainforest
(Date:12/24/2014)... its launch in December 2014, the 1U™ app ... trying to remember their usernames and passwords through replacing the ... To assist people who have struggled to remember usernames and ... and focuses on redefining identity, announced today that it is ...
(Date:12/19/2014)... 2014 Research and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ) has ... America Perimeter Security Systems Market" report to their offering. ... North American perimeter security market is estimated to grow at ... U.S. market holds a larger share in this market, ...
(Date:12/17/2014)...  HITLAB SM announced today its completion of a ... to current U.S. Food and Drug Administration (FDA) regulations. ... and smart phone application trials utilizing the highest principles ... is determined to improve global healthcare access, quality, and ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2
... SAN FRANCISCO -- Researchers looking into the ... that after an eight-week program, study participants demonstrated ... gait, and increased strength and endurance. The ... VA Medical Center in Indianapolis, Indiana University-Purdue University ...
... atomic hydrogen gas the ultimate fuel for stars ... Dr Robert Braun has found.,This is the first accurate measurement ... Just after the Big Bang the Universe,s matter was almost ... together and generated galaxies, stars and planets and the ...
... a fjord in Canada scientists have found a landscape similar ... a frozen and sulphurous environment, where sulphur associated with Arctic ... for traces of life on Europa. It is ... and sulphur come together, supposedly like on Europa, Jupiter,s moon. ...
Cached Biology News:Study: In-patient, out-patient stroke rehab might benefit from yoga 2There's more star-stuff out there but it's not dark matter 2Arctic bacteria help in the search to find life on moon Europa 2
(Date:1/22/2015)... January 22, 2015 Eckert & Ziegler ... Spectrometry (AMS) services to the pharmaceutical and biotech industry, ... the company in the position of Director of Science ... broad and valuable experience in drug metabolism and bioanalysis ...
(Date:1/22/2015)... Jan. 22, 2015  Transwestern | RBJ today announces the firm ... space for Shire a leading biopharmaceutical company, at Two Ledgemont ... RBJ,s Robert Richards , president, and Brian Cohen ... the entire five-floor building at 95 Hayden Ave. ...
(Date:1/22/2015)... Jan. 22, 2015  Transwestern | RBJ today announces the firm ... space for Shire a leading biopharmaceutical company, at Two Ledgemont ... RBJ,s Robert Richards , president, and Brian Cohen ... the entire five-floor building at 95 Hayden Ave. ...
(Date:1/22/2015)... 2015 The laboratory information management systems ... a number of technological advancements due to factors such ... need to integrate healthcare systems, and increasing government support ... system integration. Key players in the market focus on ...
Breaking Biology Technology:Eckert & Ziegler Vitalea Science appoints Mark Seymour, PhD as Director of Science & Technology 2Eckert & Ziegler Vitalea Science appoints Mark Seymour, PhD as Director of Science & Technology 3Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Transwestern?RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 4
... Mass. , July 14 Sermo ( http://sermo.com/client ... Client Center. Based on four years of client feedback and ... meets demands for enhanced navigation, mining and monitoring of organic ... million comments and nearly 4 million votes, Sermo is rich ...
... , AKRON, Ohio , July 13 State and Federal Communications, ... report on how states are responding to the Supreme Court,s landmark decision in ... , , To ... "Citizens United Update" in the lower left of the home page. The report is ...
... of Technology announces a new type of nanopore devices that ... example to read off their sequence. In a paper entitled ... Letters ), they report a novel technique to fabricate tiny ... a thickness of only 1 atom) and they managed to ...
Cached Biology Technology:Sermo Announces New Client Center with Advanced Mining and Monitoring of Organic Physician Dialog 2Sermo Announces New Client Center with Advanced Mining and Monitoring of Organic Physician Dialog 3Report Details How States Respond to Citizens United Decision 2DNA through graphene nanopores 2
... pYD1 Yeast Display Vector is specifically designed ... the surface of Saccharomyces cerevisiae. Displayed proteins ... interact with known or putative ligands. pYD1 ... consists of two domains Aga1 and Aga2 ...
... Polyclonal Antibody against Aph-1a (Aph-1aL,S Loop ... gamma secretase is a multiprotein complex ... Pen-2; all four proteins are necessary ... secretase complex catalyzes cleavage of a ...
TGase3 (S-20)...
Mouse monoclonal [HYB 232-02] to Protein S ( Abpromise for all tested applications). entrezGeneID: 5627 SwissProtID: P07225...
Biology Products: