Navigation Links
The winners of mass extinction: With predators gone, prey thrives
Date:5/3/2011

erly College Centennial Professor of Geology at West Virginia University. "There had to be some underlying evolutionary and ecological reason for that."

Researchers considered whether a change in the environment, such as water temperature or depth, could explain the crinoid explosion, Kammer said. Changes in predation were also proposed, but hard to test using the fossil record.

"You don't actually find the evidence of a fossil fish with a crinoid in its mouth very often," Kammer said.

The riddle was solved through multi-institutional collaboration and data-sharing. A database of crinoid diversity in the fossil record assembled by Kammer and William Ausich, PhD, study co-author and Professor of Earth Sciences at Ohio State University, was compared to a vertebrate dataset created by Sallan.

When the datasets were placed side by side and analyzed, a clear relationship emerged. As fish populations thrived in the Devonian, crinoid diversity and abundance remained low despite favorable conditions. But after the Hangenberg event devastated fish species, crinoids thrived, diversifying and multiplying. The data suggests the ripple effects of a mass extinction upon ecosystems can last millions of years.

"This study demonstrates a clear example of processes that operate in ecological time predator-prey relationships becoming significant in evolutionary time," Ausich said. "This means that ecological patterns and processes taking place today may have very long-reaching evolutionary effects. And although that idea may not seem particularly surprising at first, respected evolutionary biologists have long argued that it was not possible."

Eventually, the success of crinoids came to an end. As fish species recovered to previous levels, crinoid populations declined in tandem further evidence for typical predator-prey dynamics known as Lotka-Volterra cycles in modern ecology.

Fossils even suggest that the long period
'/>"/>

Contact: Robert Mitchum
robert.mitchum@uchospitals.edu
773-795-5227
University of Chicago Medical Center
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. ASPO announces 2011 award winners in pediatric otolaryngology research
2. Biophysical Society announces 2011 Student Research Achievement award winners
3. Evolutionary winners and losers revealed in collaborative study
4. Winners to share $1 million prize in Office of Naval Research challenge
5. Filmmakers Joel and Ethan Coen among 2011 Dan David Prize winners
6. Joshua E. Neimark Memorial Travel Assistance Award winners investigate stem cell transplantation, sustainable growth, women in academia, and conservation science
7. BTER Foundation announces winners of the William S. Baer Award
8. American Association of Anatomists announces young investigator award winners
9. Biophysical Society announces winners of 2011 Student Travel Awards
10. Biophysical Society announces winners of 2011 CPOW Travel Awards
11. Biophysical Society announces winners of 2011 International Travel Awards
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The winners of mass extinction: With predators gone, prey thrives
(Date:3/23/2015)... BOSTON, Mass , March 23, 2015 SoundView ... shipment of NXT-ID,s (NASDAQ: NXTD ) Wocket smart wallet. SoundView ... world user feedback on their experience with the Wocket in ... experience at CVS, Whole Foods and other retailers, making both ... Kris Tuttle also says, "If the company meets ...
(Date:3/20/2015)... Mar. 20, 2015 Research and Markets ... of the "India Sensors Market Forecast and ... The sensor market is projected to grow ... Consumer electronics, automotive, industrial and healthcare sectors ... the country. In addition, adoption of MEMS technology ...
(Date:3/19/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... commerce market, announces its biometric payment technology, the Wocket® smart ... week on Washington DC,s Fox 5 ... "The Next Great Thing", host Laura Evans calls ... ,a really big breakthrough in mobile payment.,  ...
Breaking Biology News(10 mins):Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 2India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 3NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3
... National Science Foundation announced this month that it is funding ... at Urbana-Champaign. The Center for the Physics of Living Cells ... and the second to explore the physics of biological systems. ... 10 percent matching grant from the university, bringing the total ...
... is available in German . , Dessau. ... molluscs more than plants. This is the finding of a ... (UFZ), TU Berlin, the German Federal Institute of Hydrology (BfG), ... observations before and after the Elbe floods of August 2002. ...
... Rebecca Sherry in the Department of Botany and Microbiology ... Verburge at the Desert Research Institute; Dale Johnson from ... the National Center for Atmospheric Research; and others to ... anomaly on grassland productivity and ecosystem carbon cycling. ...
Cached Biology News:NSF funds new 'Center for the Physics of Living Cells' at Illinois 2NSF funds new 'Center for the Physics of Living Cells' at Illinois 3Vegetation hardly affected by extreme flood events 2
(Date:4/24/2015)... Texas (PRWEB) April 24, 2015 ... for use in applications such as animal waste ... and oil reduction in wastewater treatment plants and ... an exhibitor at the National Restaurant Association’s NRA ... , Representatives of the company will be ...
(Date:4/24/2015)... 2015 PAREXEL International Corporation (NASDAQ: ... announced that Partnerships in Clinical Trials named PAREXEL,s ... Clinical Innovator of the Year.  The honor recognizes Mr. ... Company,s Perceptive MyTrials ® Data-Driven Monitoring solution. ... the 2015 Partnership Awards in Boston ...
(Date:4/23/2015)... 23, 2015 /CNW/ - A new and innovative service ... North America,s largest packaging ... Silver in the "Sustainability, service" category of the ... "Competitor Comparison" is a service that scores clients, ... Global peers. This benchmarking process shows clients how ...
(Date:4/23/2015)... April 23, 2015 Follow ... to a series of genetic tests that determine ... Lou Gehrig's disease, Huntington's disease, and Alzheimer's disease. ... gene composition and interaction in diseased tissue/cells to ... well as the response to treatment, such as ...
Breaking Biology Technology:DryLet to Showcase Bio-React at the National Restaurant Association’s NRA Show 2015 May 16-19, 2015 in Chicago, Illinois 2PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 2PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 3PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 4PAREXEL Honored With 2015 Clinical Innovator Of The Year Award From Partnerships In Clinical Trials 5Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 2Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 3
... one is no different. Like a creaky car on an old ... up the steep incline of recovery. After so much work, the ... ride. And to be clear in my metaphor, lets be sure ... we have not yet forgotten. , ,The next 12 months hold ...
... their grades online for the first time in December. An ... of staff members from the Universitys Division of Information ... , ,We worked out what we wanted to ... to instructors, said Connie Chatman, manager for student records in ...
... Loftus, who held the Wisconsin Legislatures top spot from ... Hyde characteristics in his book, The Art of Legislative ... individuals act collectively for the common good. A legislature ... , ,The Wisconsin Legislature over the past 10 years ...
Cached Biology Technology:Year ahead offers payoff for hard work 2Year ahead offers payoff for hard work 3UW-Madisons move to online grading goes smoothly 2In the Wisconsin Legislature, the promise of a productive session 2In the Wisconsin Legislature, the promise of a productive session 3
... The Fujifilm Life Science BAS-5000 ... all Imaging Plate equipment. The top ... scanners, it features a superior Imaging ... for versatility in target subjects. Fujifilm ...
This bispecific antibody complex has been tested for efficient depletion of CD41+ cells using the StemSep ; negative immunomagnetic cell separation system....
... solutions to meet your laboratory's requirements for data management and quality control. ... ... ... CLARA® is the standard software for Staccato Systems and custom Allegro Modules allowing for the simple ...
... microscope is described by end-users to be ... the fundamentals of light microscopy and electronic ... footprint, it does not require much space ... busy lab environment. The DM-BA300 combines Motic's ...
Biology Products: