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:3/22/2017)... March 21, 2017 Optimove , ... by retailers such as 1-800-Flowers and AdoreMe, today ... Recommendations and Replenishment. Using Optimove,s machine learning algorithms, ... product and replenishment recommendations to their customers based ... predictions of customer intent drawn from a complex ...
(Date:3/13/2017)... of security: Biometric Face Matching software  Continue Reading ... ... match face pictures against each other or against large databases. The recognition of ... ... for biometric Face Matching on the market. The speed is at 100 million ...
(Date:3/6/2017)... , March 6, 2017 ... sales technology, today announced Predictive Sales Coach TM ... infusing actionable sales intelligence into Salesforce. This unique ... enable their sales organizations with deep knowledge of ... allow for intelligent engagement. Predictive Sales Coach extends ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... La. (PRWEB) , ... March 23, 2017 , ... ... industrial monitoring solutions, today announced the hire of Dr. Sigmund “Sig” Floyd as ... customer applications, strategic partnerships and joint development activities. , “Dr. Floyd’s career has ...
(Date:3/22/2017)... MONICA, Calif. , March 22, 2017 /PRNewswire/ ... are proud to announce their extended partnership and ... will be headlined by the 21 st ... BIOMEDevice Boston, taking place May 3-4, 2017. ... Advanced Medical Technology Association (ADVAMED) President and CEO, ...
(Date:3/22/2017)... 2017 The global chronic kidney ... report by Transparency Market Research (TMR). The top four ... AbbVie Inc., accounted for a share of only 41.4% ... this market are focusing aggressively on mergers, acquisitions, and ... likely to lead to market consolidation in the next ...
(Date:3/22/2017)... , March 22, 2017   ... independent provider of product and service solutions ... that it has acquired EPL Archives, Inc., ... customers across the entire regulated product research, ... sample, document storage and ancillary services. EPL ...
Breaking Biology Technology:
Cached News: