Navigation Links
UGA study finds there's not always safety in numbers when it comes to extinction risk
Date:5/8/2012

Athens, Ga. A basic tenet underpinning scientists' understanding of extinction is that more abundant species persist longer than their less abundant counterparts, but a new University of Georgia study reveals a much more complex relationship.

A team of scientists analyzed more than 46,000 fossils from 52 sites and found that greater numbers did indeed help clam-like brachiopods survive the Ordovician extinction, which killed off approximately half of the Earth's life forms some 444 million years ago. Surprisingly, abundance did not help brachiopod species persist for extended periods outside of the extinction event.

Study co-author Steven Holland, a professor of geology in the UGA Franklin College of Arts and Sciences, said the seemingly paradoxical finding suggests that predicting which species are at risk of extinction is an extremely dicey endeavor.

"This study shows that extinction is much more complicated than generally realized," said Holland, whose findings appear in the current issue of the journal Paleobiology. "It turns out that a lot of extinction events are idiosyncratic; there are a specific set of circumstances that come together and dictate whether something goes or doesn't."

Holland and co-author Andrew Zaffos, a former master's student at UGA, examined fossils from the Cincinnati Arch, a racetrack-shaped geologic feature that arcs around southeastern Indiana, northern Kentucky and southwestern Ohio. The region is known in geology circles as one of the most fossil-rich areas on the planet. Brachiopods are numerous and well preserved there, making them an ideal group of animals to test the link between abundance and extinction.

The researchers looked at nearly 30 different generaa step up from species on the biological classification scaleof brachiopods and classified them based on whether or not they survived the Ordovician extinction as well as by their global durations. They found a link b
'/>"/>

Contact: Steven Holland
stratum@uga.edu
706-542-0424
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:11/21/2014)... Nov. 20, 2014 Strict laws against distracted ... piloting the North American and European automotive sector towards ... gesture recognition systems that are intuitive and able to ... the industry. New analysis from Frost ... Market in Europe and ...
(Date:11/21/2014)...   Atmel® Corporation (NASDAQ: ATML ... technology solutions, today launched the industry,s first family of ... V cc range from 1.7V to 5.5V. The ... 2 C bus communication speeds, and are available with ... ideal for consumer, industrial, computer, and medical applications. ...
(Date:11/18/2014)... , Nov. 17, 2014   ... EMC collaborate to develop The Partners Data Lake, ... The Partners Data Lake will allow researcher and ... diagnostics, treatment and the lives of patients ... and clinical activities across the Partners system, breaking ...
Breaking Biology News(10 mins):Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 2Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 3Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 4Partners HealthCare and EMC Unite to Solve Health Care's Toughest Challenges Using Big Data 5
... STATION N.J., PRINCETON, N.J. and JAMAICA PLAIN, Mass., ... (through an affiliate), Medarex, Inc. (NASDAQ: MEDX) and ... Massachusetts Medical School (UMMS) today announced that they ... CDA-1 and CDB-1 (also known as MDX-066/MDX-1388 and ...
... Cambridge, UK Wolf-Hirschhorn Syndrome (WHS) is a human ... with WHS have a characteristic set of facial features, ... forehead, and highly arched eyebrows. Other symptoms associated ... and skeletal abnormalities, and the severity of these symptoms ...
... AWRE ) today announced that it has amended and ... of comments and a request from the Securities and Exchange ... range of the tender offer to between $2.20 and $2.60 ... share. Aware has also extended the expiration date for the ...
Cached Biology News:Mass Biologic Labs/UMass Med School and Medarex license C. difficile monoclonal antibody to Merck 2Mass Biologic Labs/UMass Med School and Medarex license C. difficile monoclonal antibody to Merck 3Mouse model provides a new tool for investigators of human developmental disorder 2Aware, Inc. Amends and Extends Dutch Auction Tender Offer 2Aware, Inc. Amends and Extends Dutch Auction Tender Offer 3Aware, Inc. Amends and Extends Dutch Auction Tender Offer 4
(Date:12/17/2014)... Achim Noack has been named global ... In this position, Noack will assist Jerry Stoller, CEO ... marketing strategy and supervise global marketing management and implementation ... tremendous knowledge and experience in the crop protection industry,” ... and innovative thinking will be a great asset for ...
(Date:12/17/2014)... Beach, CA (PRWEB) December 17, 2014 ... Inc. to provide a larger packaged waste water treatment ... in King Abdullah Economic City (KAEC). Two years ago ... EMAAR’s Jeddah Gate Development, serving two residential towers with ... capacity is over a quarter million gallons per day ...
(Date:12/17/2014)... Indianapolis, IN (PRWEB) December 17, 2014 ... for Laboratory Excellence following its most recent COLA ... Accreditation by COLA, a national healthcare accreditation organization. ... rigid standards of quality in day-to-day operations, demonstrate ... and pass a rigorous on-site laboratory survey. ...
(Date:12/17/2014)... Diego, CA (PRWEB) December 17, 2014 ... and activation agency and member of the Huntsworth Health ... Gonzales to its executive team. In her role, Gonzales ... , “We are incredibly honored to welcome a ... Agency Chief and CEO, Gaëtan Fraikin. “She is a ...
Breaking Biology Technology:Achim Noack Joins Stoller Group as Global Vice President of Marketing and Administration 2Xeno Diagnostics Receives 3rd Award for Laboratory Excellence 2Audacity Welcomes Healthcare Communications Expert Jamie Gonzales as Senior Vice President of Client Services 2
... firm Bruker AXS announced on Tuesday it will ... materials research and analysis software. The deal is expected to ... transaction, which was finalized on Aug. 13 according to Bruker's ... Commission, states that Bruker will acquire all shares of SOCABIM's ...
... Wisconsin companies were among CIO Magazine's 2005 ... theme, the Bold 100, was awarded to companies the ... the company despite great risks. , ,Winners were selected ... detailing their practices in business and IT, review by ...
... the U.S. food supply from terrorism and natural disasters has ... its original November dates. , ,The Great Lakes Agro-Security ... Milwaukee, with as many as 1,000 people expected from the ... with the Wisconsin Procurement Institute, is helping to plan the ...
Cached Biology Technology:Bruker acquires French X-ray software company 2CUNA and Lands' End win IT applications award 2
Request Info...
...
...
... purified Formulation: 50mM Tris-HCl, pH ... 0.2mM PMSF, 1mM benzamidine, 0.1% ... PP2A1 (Protein Phosphatase 2A1) partially ... sulfate precipitation, QSepharose,amino-hexyl agarose, Superdex ...
Biology Products: