Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Century may bring unprecedented climate change to southern hemisphere

06.02.2004


Research shows potential warming unmatched over past 48,000 years



The new century may bring hundreds or even thousands of plant and animal extinctions to the Andes Mountains of Peru according to new research by Florida Institute of Technology Paleo-Ecologist Mark Bush. Bush’s findings, chronicled in the Feb. 6 issue of the prestigious journal Science, result from the study of the first continuous record of Andean climate change during the past 48,000 years. The Andes region of Peru is one of the most biologically diverse areas on the planet.

In the article, Bush and fellow researchers Miles Silman of Wake Forest University and Florida Tech graduate student Dunia Urrego, discovered a possible reason for this remarkable biodiversity by comparing North and South American warming over many millennia.


At the end of the ice age, North America and the northern hemisphere in general, experience an abrupt warming of 5 degrees Celsius over two centuries. Bush expected to find the same results in South America. What he found instead was a much more gradual warming, 5 degrees over several millennia.

This discovery may explain why there was less extinction in the Andes coming out of the last ice age, as well as why the area may be particularly susceptible to global warming.

"According to the International Panel on Climate Change, we can expect a minimum of one to two degrees Celsius increase in temperature in the Andes by the end of this century," Bush said. "Our record shows that climate change of this kind has never happened in the past 48,000 years. It is not a natural phenomenon."

Bush predicts that species that can migrate readily, such as birds and butterflies, may be the least affected, whereas species that are less mobile will be vulnerable to extinction. Playing into the equation will be the continuing presence of man. Farmers will be able to extend their agricultural activities further upslope into what is now cloud forest. The result will be an increasingly fragmented landscape that presents barriers to the dispersal of wildlife, trapping them in increasingly inhospitable climatic conditions.

Jay Wilson | EurekAlert!

More articles from Ecology, The Environment and Conservation:

nachricht Upcycling 'fast fashion' to reduce waste and pollution
03.04.2017 | American Chemical Society

nachricht Litter is present throughout the world’s oceans: 1,220 species affected
27.03.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>