Navigation Links
Study may help predict extinction tipping point for species
Date:9/8/2010

Athens, Ga. What if there were a way to predict when a species was about to become extinctin time to do something about it?

Findings from a study by John M. Drake, associate professor in the University of Georgia Odum School of Ecology, and Blaine D. Griffen, assistant professor at the University of South Carolina, may eventually lead to such an outcomeand that is only the start. Their study also has implications for understanding drastic, even catastrophic, changes in many other kinds of complex systems, from the human brain to entire ecosystems.

The paper, "Early warning signals of extinction in deteriorating environments," published in the early online edition of the journal Nature, describes a study of the fluctuations in experimental populations of water fleas (Daphnia magna) undergoing environmental stress until they reach a tipping point beyond which they do not remain viable. The study is unique in its careful comparison of these stressed populations with other, healthy populations in the context of new theories about dynamic systems undergoing transitions at a tipping point, particularly a phenomenon known as "critical slowing down."

"This is the first experimental demonstration of critical slowing down in a biological system," said Drake. He explained that critical slowing down is a term used to describe a pattern in data that has previously been observed in physics and the Earth sciences, but until now has been only a theoretical possibility in biology. It describes the decreasing rate of recovery from small disturbances to a system as it approaches a tipping point. When a system is close to a tipping point, it can take a long time to recover from even a very small disturbance. "The theory was originally used to describe drastic changes in other kinds of systemseverything from epileptic seizures to regime shifts in the earth's climate system," Drake said. "But these attributions of CSD primarily have been after-th
'/>"/>

Contact: John M. Drake
jdrake@uga.edu
706-583-5539
University of Georgia
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/1/2014)... in the deserts, rainforests, prairies and forests of the ... City,s Central Park, according to a surprising new study ... Colorado Boulder. , The research team analyzed 596 ... and discovered a stunning diversity of below-ground life, most ... Only 8.5 percent to 16.2 percent of the organisms ...
(Date:9/30/2014)... Ill. --- Do we think of nature as something that ... we need to "preserve?" Or do we think of ourselves ... part of nature, but what about a house? , ... are also reflected in our actions, our speech and in ... with the University of Washington, the American Indian Center of ...
(Date:9/30/2014)... National Institutes of Health (NIH) awarded Lawrence Livermore ... an electrode array system that will enable researchers ... unprecedented resolution and scale. , LLNL,s grant-funded project ... Obama,s BRAIN (Brain Research through Advancing Innovative ... revolutionize our understanding of the human mind and ...
Breaking Biology News(10 mins):Microbes in Central Park soil: If they can make it there, they can make it anywhere 2Microbes in Central Park soil: If they can make it there, they can make it anywhere 3The cultural side of science communication 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 3
... Dua, an assistant professor of computer science, and ... engineering, are using their skills and technical knowledge ... of Defense with sensor networks and tracking capabilities. ... Tracking, or ATR, involves the development of fast ...
... are multifactorial: they are not simply the result of ... that can no longer carry out its job. Diabetes ... and environmental factors. Similarly, in biotechnology, processes cannot be ... process. It is the networks of interaction that Systems ...
... a leading publisher of scientific, technical and medical ... than 4,000 eBooks on ScienceDirect. eBooks on ScienceDirect ... the present. These include scientific and technical books ... from renowned imprints including Pergamon and Academic Press. ...
Cached Biology News:Louisiana Tech researchers investigate tracking, sensors to assist Air Force 2Louisiana Tech researchers investigate tracking, sensors to assist Air Force 3Europe needs collective effort on System Biology, says ESF Task Force 2Europe needs collective effort on System Biology, says ESF Task Force 3Europe needs collective effort on System Biology, says ESF Task Force 44,000 e-Books now available on ScienceDirect 2
(Date:10/1/2014)... 1, 2014 Industry leaders ... to engage around the theme, ,Commercial Opportunities in the ...   Elsevier , a world-leading provider ... will host a gathering of some of the industry,s ... impacting healthcare today and in the future. The ...
(Date:9/30/2014)... Pacific Northwest Biotechnology, LLC - Product ... Markets Direct,s, ,Pacific Northwest Biotechnology, LLC - Product ... the Pacific Northwest Biotechnology, LLC,s pharmaceutical research and ... on the current therapeutic developmental pipeline of Pacific ... various stages, therapeutics assessment by drug target, mechanism ...
(Date:9/30/2014)... Proove Biosciences , the commercial and research leader ... genetic test built upon research from their published P.A.I.N. ... provide physicians with an objective way to understand theirs ... between individuals. With this new test, physicians will be ... predisposition that will affect their pain tolerance. , The ...
(Date:9/30/2014)... Genedata, a leading provider ... and related life science research, today announced ... Selector as its host-pathogen data analysis platform ... a European consortium dedicated to improving the ... anti-fungal drug therapies. Genedata Selector supports this ...
Breaking Biology Technology:Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 2Elsevier Healthcare and Pharmaceutical Economics Conference 2014 To Convene Industry Leaders to Discuss Top Healthcare Business Issues 3Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 2Pacific Northwest Biotechnology, LLC - Product Pipeline Review - 2014 3Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3FUNGITECT Consortium Adopts Genedata Selector as Data Analysis Platform for Anti-fungal R 2FUNGITECT Consortium Adopts Genedata Selector as Data Analysis Platform for Anti-fungal R 3
... INDIANAPOLIS, Oct. 20, 2011 BioStorage Technologies, Inc. ... biomaterial storage and cold chain logistics for the ... Benchmarking Symposium at the International Contract Services Expo ... Germany. The symposium will include ...
... 2011 MiMedx Group, Inc.  (OTCBB: MDXG), ... regenerative biomaterials and bioimplants processed from human amniotic membrane, ... "Pete" Petit, has been inducted into the National Academy ... Academy of Engineering is among the highest professional distinctions ...
... Oct. 20, 2011 Med track is pleased ... 2011. Attendees of the show will be the first ... the newly designed platform. With deeply integrated datasets and ... professionals in business development, competitive intelligence and sales and ...
Cached Biology Technology:BioStorage Technologies to Host Global Sample Management Benchmarking Symposium at International Contract Services Expo 2MiMedx Group's Chairman, Parker H. "Pete" Petit, Is Inducted Into the National Academy of Engineering 2Be One of the First to Experience the New Medtrack Platform at BIO®-Europe 2011 2
...
... and flexibility of the BDTM LSR, the first UV ... The BD LSR II has performance, capabilities, and ... Free up your high-performance cell sorter by moving your ... LSR II. The BD LSR II can be configured ...
... Flow Cytometer System is a full featured, two ... the C6 Flow Cytometer, CFlow Software, and a ... Cytometer System provides all the capabilities of the ... the price. The C6 Flow Cytometer System has ...
...
Biology Products: