HOME >> BIOLOGY >> NEWS
University Of Cincinnati Geologists Analyzes Evolutionary Impact Of Mass Extinctions

ests an alternative explanation.

"Many deposit-feeders favor muddy, nutrient-rich sediments as a substrate to occupy. Just such sediments were provided during key intervals as a consequence of eroding areas uplifted during mountain-building. Quite apart from the action of the bulldozers, many of the incumbent immobile types would not have liked this kind of habitat.

So I am suggesting, as an alternative to the above 'competitive' scenario, that the transition happened because of major, physical changes to habitats."

In fact, previous research reported by Miller and others on the Ordovician Period showed that diversification of certain groups was favored in areas where active mountain-building took place.

As for those who argue that mass extinctions are actually minor contributors to global diversity patterns, Miller has used his database of Ordovician fossil occurrences to demonstrate that regional and local bursts of diversification occur at different times around the world.

Over time, the bursts add up to present what Miller believes is a misleading picture of diversification trends a smooth, gradual change over geologic time.

"The global pattern does not match any localized pattern," said Miller. "The global diversity trend is misleading for what it says about the rates of transition and perhaps even for what causes them."

Miller's research is supported by NASA's Program on Exobiology.


'"/>

Contact: Arnold Miller
arnold.miller@uc.edu
(513) 556-4022
University of Cincinnati
20-Aug-1998


Page: 1 2

Related biology news :

1. Indiana University, EPA to study airborne PCBs
2. University of Alberta researcher looks for clues to mysterious disease
3. Northeastern University receives $12.4 million NSF grant for creation of nanomanufacturing institute
4. Washington University in St. Louis leads group studying aging process
5. Tufts University establishes $4 million dollar tissue engineering resource center
6. Case for IBD combination therapy comes from research at Baylor, MIT and Hebrew University
7. As informatics grows, Indiana University helps set research agenda
8. University of Arizona licenses patent for natural fungicide
9. Washington University in St. Louis plays key role in sequencing moss genome
10. University of Pittsburgh receives $10 million grant for head and neck cancer
11. Clemson University spin-off uses corn to make plastics, provide cleaner air

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


(Date:9/30/2019)... , ... September 30, 2019 , ... ... focused on molecular manufacturing and other transformative technologies, announced the winners for the ... Experiment and the other for Theory in nanotechnology/molecular manufacturing. , Established in 1993 ...
(Date:9/30/2019)... ... September 30, 2019 , ... As human induced pluripotent stem ... for studying the development and diseases of the human heart, there is an increasing ... progeny heart muscle cells to be clearly and easily recorded. A study released today ...
(Date:9/30/2019)... Calif. (PRWEB) , ... September ... ... a leading think tank, research, and public interest organization focused on molecular ... Distinguished Student Prize. , The Award recognizes the College graduate or undergraduate ...
Breaking Biology News(10 mins):
(Date:10/3/2019)... ... October 01, 2019 , ... Today ... itself, announced the midway point of its randomized research trial for individuals with ... to measure the efficacy of a non-invasive technology which compares tones delivered to ...
(Date:10/3/2019)... ... October 02, 2019 , ... Murrieta Genomics , the launch ... venture capital companies in Silicon Valley at a special Life Science showcase event ... be held at the JJ Lake Business Center located at 340 E. Middlefield Road ...
(Date:10/3/2019)... ... ... Yesterday, at the 2019 meeting of Outsourcing in Clinical Trials New England ... Ph.D., discussed important design factors that currently limit the success of early stage stem ... clinical trials, in his talk Dr. Sherley focused on the highly problematic ...
(Date:9/24/2019)... ... September 24, 2019 , ... Drug resistance has been declared as one ... with MRSA becoming one of the most serious concerns. Hong Kong cannot be spared ... community-associated MRSA (CA-MRSA), or a seven-fold of the figure in 2007 – the year ...
Breaking Biology Technology:
Cached News: