Navigation Links
Climate-caused biodiversity booms and busts in ancient plants and mammals
Date:8/6/2009

ANN ARBOR, Mich.---A period of global warming from 53 million to 47 million years ago strongly influenced plants and animals, spurring a biodiversity boom in western North America, researchers from three research museums report in a paper published online this week in the Proceedings of the National Academy of Sciences.

"Today, the middle of Wyoming is a vast desert, and a few antelope and deer are all you see," said lead author Michael Woodburne, honorary curator of geology at the Museum of Northern Arizona. "But 50 million years ago, when temperatures were at their highest, that area was a tropical rainforest teeming with lemur-like primates, small dawn horses and a number of small forest rodents and other mammals. In fact, there were more species of mammals living in the western part of North America at that time than at any other time."

Woodburne and co-authors Gregg Gunnell of the University of Michigan Museum of Paleontology and Richard Stucky of the Denver Museum of Nature & Science examined the records of ancient temperatures and information on the fossil plants and mammals that inhabited North America during the Eocene epoch and found that diversity increased and declined with rising and falling temperatures.

The Eocene began about 56 million years ago with a short period of increased warming, when many modern groups of mammals first appeared in North America, probably by emigrating from other areas. The period the researchers studied, called the Early Eocene Climatic Optimum (EECO), began about three million years later and included a long-term temperature increase coupled with a long-term rise in diversity.

During that time, as mean annual temperature warmed from about 60 degrees Fahrenheit to 73 degrees Fahrenheit (15 degrees Celsius to 23 degrees Celsius), vegetation changed, with many new plant forms appearing, and mammal diversity increased from 90 genera to an all-time high of 104 genera, the res
'/>"/>

Contact: Nancy Ross-Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
Source:Eurekalert

Page: 1 2

Related biology news :

1. New theory gives more precise estimates of large-scale biodiversity
2. Academy Library accepted to prestigious Biodiversity Heritage Library
3. Scorpion biodiversity
4. K-State biologist collaborating with researchers in Africa on grassland sustainability, biodiversity
5. Threats to biodiversity rise in the worlds Mediterranean-climate regions
6. Biodiversity itself begets a species cascade, researchers say
7. The global impact of climate change on biodiversity
8. Alpine rivers hold important clues for preserving biodiversity and coping with climate change
9. Networks of small habitat patches can preserve urban biodiversity
10. Marine invasive species advance 50 km per decade, World Conference on Marine Biodiversity told
11. Marine invasive species advance 50km per decade, World Conference on Marine Biodiversity told
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... 2015 Valid S.A. ("Company") (BM&FBOVESPA: VLID3 ON), is pleased ... State of Washington,s Department of Licensing, ... and central issuance system for driver,s licenses and identification cards ... planning and development will start in January 2015, with enrollment ...
(Date:1/22/2015)... , Jan. 13, 2015 Technology Showcase, Hall E - ... authentication solutions, today announced it will showcase its EyeLock ID ... by the Department of Energy,s Oak Ridge National Laboratory ... Show . EyeLock,s iris identity authentication technology is being used ...
(Date:1/22/2015)... Conn. , Jan. 20, 2015 NXT-ID, Inc. (NASDAQ: ... mobile commerce market, reports on the recent success of the Wocket™ smart ... Wocket smart wallet was named as one of the "11 ... the "5 Best Products Launched At CES So Far" by Newseveryday.com and ...
Breaking Biology News(10 mins):Valid USA Signs Contract For Washington Driver's License Issuance 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 3CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3
... (known as phages) are among the most abundant ... recently in Nature, March 2 and 12, 2008, ... modern organosedimentary structures (sedimentary features, built by the ... microbialites, the living analogues of the oldest fossils ...
... release is available in French . , ... Minister of Industry, on behalf of the Honourable Jim ... Natural Sciences and Engineering Research Council of Canada (NSERC), ... that Nobel Laureate John C. Polanyi is the winner ...
... A small group of patients with a common heart ... injectable microfoam experienced no neurological, visual or cardiac changes ... results from a phase II trial. The results are ... the annual scientific meeting of the Society of Interventional ...
Cached Biology News:Surprising discovery from first large-scale analysis of biodiversity and biogeography of viruses 2Dr. John Polanyi wins Canada's most prestigious science award 2Improved foam for varicose veins found to be safe in preliminary results from phase II trial 2
(Date:1/22/2015)... January 22, 2015 Selexis SA, a ... Research Cell Banks (RCBs) used for drug discovery to ... Banks will include Next-Generation Sequencing (NGS) data ... de-risks biologic manufacturing by ensuring the integrity of the ...
(Date:1/22/2015)... , 22 de enero de 2015  El Dr. ... su llamada a nominaciones para 2015. Este prestigioso premio ... o tiene el potencial para hacer, contribuciones destacadas para ... aceptarán hasta el 15 de marzo de 2015 a ...
(Date:1/22/2015)... 2015  Varian Medical Systems (NYSE: VAR ), world ... its commitment to sustainability with inclusion on a prestigious list ... ranked healthcare equipment company among the Corporate Knights Global 100 ... Forum at Davos, Switzerland . ...
(Date:1/22/2015)... Jan. 22, 2015  Derma Sciences, Inc. (Nasdaq: ... on advanced wound care, announces that AMNIOEXCEL® and ... been added to the Premier, Inc. Regenerative Skin ... for the AMNIOEXCEL® and AMNIOMATRIX® product lines, which ...
Breaking Biology Technology:Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4Varian Honored Among World's 100 Most Sustainable Corporations 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 2Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 3Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 4Derma Sciences Expands Access of its AMNIOTIC TISSUE Product Line with New Premier, Inc. Agreement 5
... a week ago, we took a look at the PricewaterhouseCoopers quarterly ... quarter of 2003. As part of this analysis, we look at ... in the Midwest region. , ,This week, lets take a ... if there are any trends over time. Ready? Here we go! ...
... the planet Uranus, as viewed in this composite image, by ... Lawrence Sromovsky, UW-Madison Space Science and Engineering Center. Capitalizing ... scientists have gained an unprecedented look at the atmosphere of ... weather in the solar system. , ,A pair of images ...
... taglines pushing sales are great for getting a customers attention ... second or two. , ,Some taglines catch the users attention, ... trap and run away. , ,The combined yearly budgets of ... easily add up to billions of dollars. Corporations make extraordinary ...
Cached Biology Technology:Though VC investing is down, reloading on new funds is rising 2Though VC investing is down, reloading on new funds is rising 3UW space scientists use Keck telescope to study wild weather of Uranus 2UW space scientists use Keck telescope to study wild weather of Uranus 3Super advertising slogans, and super costs 2Super advertising slogans, and super costs 3Super advertising slogans, and super costs 4
Recognizes Human Connexin 45. Due to sequence homologies, this antibody is also expected to react with canine (100% homology) and mouse (92% homology) Connexin 45. Also confirmed to work on rat C6 c...
... Pen, a hydrophobic barrier pen for immunohistochemistry ... use with frozen or paraffin-embedded tissue sections ... provides a heat-stable, water-repellent barrier that keeps ... prevents mixing of reagents when differentially staining ...
...
...
Biology Products: