HOME >> BIOLOGY >> NEWS
Evolutionary 'speed limit' governs how quickly life bounces back after extinction

Biodiversity recovers more slowly than thought

The 500-million-year history of life on Earth is a series of booms and busts. But while the busts, or extinctions, can be either sudden or gradual, the booms, or diversifications, of new organisms rarely occur quickly, according to a new study by a National Science Foundation (NSF)-funded scientist at the University of California at Berkeley. A paper on the subject appears in this week's issue of the journal Nature.

"This research has profound implications for our ongoing impact on Earth's fragile biotic communities and ecosystems," says Rich Lane, program director in NSF's division of earth sciences, which funded the research.

A statistical analysis of the rates of extinction and origination in the fossil record shows that life seldom rebounds rapidly from an extinction. The results imply that the diversification of life obeys "speed limits" set by evolutionary processes, said study author James Kirchner of UC-Berkeley.

"There seem to be biological mechanisms that limit diversification of new organisms and control which ones become successful enough to persist," he said. "Biodiversity is slow to recover after an extinction."

This apparent speed limit on the rate at which surviving organisms evolve and diversify has major implications for present- day extinctions.

"If we substantially diminish biodiversity on Earth, we can't expect the biosphere to just bounce back. It doesn't do that. The process of diversification is too slow," Kirchner said. "The planet would be biologically depleted for millions of years, with consequences extending not only beyond the lives of our children's children, but beyond the likely lifespan of the entire human species."

Kirchner has been mining a fossil database created by the late University of Chicago paleontologist Jack Sepkosk
'"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-8070
National Science Foundation
4-Jan-2002


Page: 1 2

Related biology news :

1. Evolutionary Genomics meeting in Tucson
2. Evolutionary change leapfrogs over tadpoles
3. Evolutionary implications: myoglobin-like proteins found in ancient microorganisms
4. Evolutionary genetic tools trace cancer clone lines
5. Genetic Stowaways May Contribute To Evolutionary Change: Adjacent Sequences Tag Along With Mobile DNA Elements, Study Shows
6. Fruit-Fly Mating May Produce A Game Of Evolutionary Leapfrog
7. University Of Cincinnati Geologists Analyzes Evolutionary Impact Of Mass Extinctions
8. Tiny Jamaican Tree Crab Made Big And Fast Evolutionary Leap, Scientists Discover
9. Evolutionary Advantage Found For Sex
10. UMass scientist identifies gene that governs obesity, physical activity, sex behaviors in mice
11. Inherent speed limit governs how quickly life bounces back after extinction, UC Berkeley research shows

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/11/2016)... , March 11, 2016 ... new market research report "Image Recognition Market by Technology ... (Marketing and Advertising), by Deployment Type (On-Premises and Cloud), ... To 2022", published by MarketsandMarkets, the global market is ... to USD 29.98 Billion by 2020, at a CAGR ...
(Date:3/9/2016)... PALM BEACH GARDENS, Fla. , March 9, ... of identity management authentication and enrollment solutions, today ... proven DigitalPersona ® Altus multi-factor ... enable IT and InfoSec managers to step-up security ... friction.  Washington, DC ...
(Date:3/2/2016)... DUBLIN , March 2, 2016 /PRNewswire/ ... has announced the addition of the  "Global ... to their offering.  ,     (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , ... sector to grow at a CAGR of ... http://www.researchandmarkets.com/research/wzwqtz/global_biometrics ) has announced the addition ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... , ... April 29, 2016 , ... Intelligent Implant Systems ... the FDA via 510(k) for sale in the United States. These components expand ... thoraco-lumbar fusions. With one-level sales beginning in October of 2015, the company has ...
(Date:4/28/2016)... NEW YORK , April 28, 2016 /PRNewswire/ ... biotechnology acceleration company reports the Company,s CEO  was ... capital titled Accelerators Enter When VCs Fear To ... Life Science Leader magazine is an ... work for everything from emerging biotechs to Big ...
(Date:4/28/2016)... ... April 28, 2016 , ... As part ... top industry experts, and expanding its LATAM network and logistics capabilities. Enhancements ... to manage their clinical trial projects. , The expansion will provide unmatched clinical ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... technology at the Spring 2016 Marijuana Business Conference and Expo. Shimadzu’s high-performance instruments ... heavy metals, and more. Expo attendees can stop by booth 1021 to learn ...
Breaking Biology Technology:
Cached News: