Navigation Links
Over 65 million years North American mammal evolution has tracked with climate change
Date:12/26/2011

PROVIDENCE, R.I. -- History often seems to happen in waves fashion and musical tastes turn over every decade and empires give way to new ones over centuries. A similar pattern characterizes the last 65 million years of natural history in North America, where a novel quantitative analysis has identified six distinct, consecutive waves of mammal species diversity, or "evolutionary faunas." What force of history determined the destiny of these groupings? The numbers say it was typically climate change.

"Although we've always known in a general way that mammals respond to climatic change over time, there has been controversy as to whether this can be demonstrated in a quantitative fashion," said Brown University evolutionary biology Professor Christine Janis. "We show that the rise and fall of these faunas is indeed correlated with climatic change the rise or fall of global paleotemperatures and also influenced by other more local perturbations such as immigration events."

Specifically, of the six waves of species diversity that Janis and her Spanish collaborators describe online this week in the Proceedings of the National Academy of Sciences, four show statistically significant correlations with major changes in temperature. The two transitions that show a weaker but still apparent correlation with the pattern correspond to periods when mammals from other continents happened to invade in large numbers, said Janis, who is the paper's senior and second author.

Previous studies of the potential connection between climate change and mammal species evolution have counted total species diversity in the fossil record over similar time periods. But in this analysis, led by postdoctoral scholar Borja Figueirido, the scientists asked whether there were any patterns within the species diversity that might be significant. They were guided by a similar methodology pioneered in a study of "evolutionary faunas" in marine invertebrates b
'/>"/>

Contact: David Orenstein
david_orenstein@brown.edu
401-863-1862
Brown University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. £2 million study to reveal workings of dementia genes
2. NIH awards Clemson bioengineer $1.5 million to improve durability of tissue heart valves
3. L-1 Identity Solutions Receives $5.9 Million Drivers License Contract Expansion from the State of Mississippi
4. L-1 Identity Solutions Awarded New Massachusetts RMV Drivers License Contract Valued at an Estimated $32 Million
5. FSU researchers discovery leads to $1.5 million grant, potential new treatment of liver fibrosis
6. Missouri Botanical Garden mounts milestone 6 millionth herbarium specimen
7. New $11 million center to speed production of new compounds for drug discovery
8. SAIC Awarded $37 Million Contract to Support U.S. Army Program Executive Office - Enterprise Information Systems
9. Eastman Dental Center awarded $1.6 million to find ways to prevent cavities
10. L-1 Identity Solutions Selected by the State of New York as the Winning Bidder to Provide Enrollment Services for a Contract Estimated at Up to $250 Million
11. Deep heat solution to 500-million year mystery
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Over 65 million years North American mammal evolution has tracked with climate change
(Date:9/30/2014)... of The Economist,s prestigious Innovation awards 2014 will speak ... the JW Marriott Hong Kong on Friday, October 10 th ... and the lessons those hold for others. The awards, which recognises ... decade, will be presented at a ceremony in Hong ... the first time the ceremony has come to Asia ...
(Date:9/29/2014)... 1970 and 2010 populations of mammals, birds, reptiles, ... percent, says the 2014 Living Planet Report released ... loss occurs disproportionately in low-income countriesand correlates with ... In addition to the precipitous decline in wildlife ... signs about the overall health of the planet. ...
(Date:9/29/2014)... team says recently identified radiation detection properties of a ... for homeland security and medical advances. , In a ... of Optics Letters , UT Arlington Physics Professor ... to fabricate transparent nanoscintillators by heating nanoparticles composed of ... formed. A scintillator refers to a material that ...
Breaking Biology News(10 mins):Hear from The Economist's 2014 Innovation Award Winners at Innovation Summit on October 10th in Hong Kong 2Hear from The Economist's 2014 Innovation Award Winners at Innovation Summit on October 10th in Hong Kong 3Hear from The Economist's 2014 Innovation Award Winners at Innovation Summit on October 10th in Hong Kong 4Hear from The Economist's 2014 Innovation Award Winners at Innovation Summit on October 10th in Hong Kong 5Hear from The Economist's 2014 Innovation Award Winners at Innovation Summit on October 10th in Hong Kong 6Hear from The Economist's 2014 Innovation Award Winners at Innovation Summit on October 10th in Hong Kong 7Half of global wildlife lost, says new WWF report 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 3
... previously thought that land plants evolved from stonewort-like algae. However, ... BMC Evolutionary Biology shows that the closest relatives to ... Ancestors of green plants began to colonise the ... accepted that they evolved from streptophyte algae (a group of ...
... CHAMPAIGN, Ill. In two new studies, researchers provide the ... that allow the ribosome the cell,s protein-building machinery ... The first study, in Nature Structural and Molecular Biology ... the insertion process: the moment just after the ribosome docks ...
... Richer, speaking at his 4th annual Nutrition & The Eye ... the University of Missouri in St. Louis, says molecular medicine ... when all other therapies have been exhausted. "These nutritional ... in cardiology , cancer research and some human studies", Dr ...
Cached Biology News:Ancestors of land plants revealed 2Researchers get a first look at the mechanics of membrane proteins 2Researchers get a first look at the mechanics of membrane proteins 3Low-cost molecular medicine should be included in modern eye physicians' tool kit 2
(Date:9/30/2014)... Switzerland (PRWEB) September 30, 2014 ... software solutions for drug discovery and related ... FUNGITECT consortium has chosen Genedata Selector as ... sequencing (NGS) data. FUNGITECT is a European ... invasive fungal diseases via individualized anti-fungal drug ...
(Date:9/30/2014)... Md., Sept. 30, 2014 BioHealth Innovation, ... commercializing market-relevant biohealth innovations and increasing access to early-stage ... today that venture capitalist, Tania Fernandez , Ph.D., ... Dr. Fernandez will be a member of the management ... provide up to $50 million in seed and early-stage ...
(Date:9/30/2014)... Sept. 30, 2014 The overall research ... (NGS) sequencing trends and use. Most researchers outsource ... expected to increase within the next 12 months. ... criteria for purchasing sequencing instruments. Disease-related research is ... of RNA-Seq continues to surge, with half of ...
(Date:9/30/2014)... 2014 SoundConnect, an ... is dedicated to supporting business communication solutions, including ... Power, a carrier services specialist has ... stays connected and productive at all times. This ... of businesses to cloud communications services. On ...
Breaking Biology Technology:FUNGITECT Consortium Adopts Genedata Selector as Data Analysis Platform for Anti-fungal R 2FUNGITECT Consortium Adopts Genedata Selector as Data Analysis Platform for Anti-fungal R 3Seasoned Life Sciences Venture Capitalist Tania Fernandez Joins BHI to Help Manage New BioHealth Gap Fund 2Global Next-generation Sequencing Trends 2SoundConnect Expands Carrier Services Division 2
... a new kind of fiber that could be tougher ... includes groups from other universities and the MER Corporation, ... in Manufacturing & Entrepreneurship at the McCormick School of ... a high performance fiber from carbon nanotubes and a ...
... WASHINGTON, Dec. 3, 2010 The Brazilian Sugarcane ... to an ethanol proposal floated by Senator Max Baucus, ... cut the U.S. ethanol subsidy (known as VEETC or ... 36-cents per gallon, but extend the tariff on imported ...
... PROVO, Utah, Dec. 3, 2010 Nu Skin (NYSE: ... how mental and physical vitality is improved through nutritional ... were made at the First World Congress on Targeting ... "Through Nu Skin,s innovative ageLOC science we ...
Cached Biology Technology:Researchers create new high-performance fiber 2Researchers create new high-performance fiber 3Brazilian Sugarcane Industry Association Says Lame-Duck Congress Goes from Bad to Worse on Ethanol Policy 2Brazilian Sugarcane Industry Association Says Lame-Duck Congress Goes from Bad to Worse on Ethanol Policy 3Nu Skin Scientists Present ageLOC Research at International Conference on Mitochondria 2Nu Skin Scientists Present ageLOC Research at International Conference on Mitochondria 3
... Source: Crotalus adamanteus venom Description: ... widely used in studying nucleic ... . It hydrolyzes 5'-mononucleotides from ... . Phosphodiesterase I cleaves ADP-ribosylated ...
... Life Science Rotarods are used to assess the ... fatigue resistance on mice and rats using one ... user friendly; the animals are placed on textured ... onto the individual sensing platforms below, its test ...
... I Amplification Grade digests ... to oligodeoxyribonucleotides. The specific ... DNAse I Amplification Grade ... tested for absence of ...
... Qualified is a special preparation of bovine pancreatic ... stranded cleavage of DNA molecules. In the presence ... makes double strand breaks at random sites in ... can be controlled by the enzyme concentration and ...
Biology Products: