Navigation Links
Ancient global warming allowed greening of Antarctica
Date:6/18/2012

Ancient Antarctica was warmer and wetter than previously suspected, enough to support vegetation along its edges, according to a new study.

By examining the remnants of plant leaf wax found in sediment cores taken below the Ross Ice Shelf, scientists from the University of Southern California, Louisiana State University and NASA's Jet Propulsion Laboratory were able to determine that summer temperatures along the Antarctic coast 15 to 20 million years ago were 20 degrees Fahrenheit (11 degrees Celsius) warmer than they are today, reaching up to about 45 degrees Fahrenheit (7 degrees Celsius); with several times more precipitation.

This occurred during a period of global warming in the middle Miocene epoch that coincided with increased levels of atmospheric carbon dioxide.

"This is some of the first evidence of just how much warmer it was," said Sarah J. Feakins, an assistant professor of earth sciences at the USC Dornsife College of Letters, Arts and Sciences and lead author of a paper on the research published in Nature Geoscience on June 17.

Scientists began to suspect that high-latitude temperatures during the middle Miocene were warmer than previously believed when Sophie Warny, co-author of the Nature Geoscience paper, discovered large quantities of pollen and algae in sediment cores taken around Antarctica.

Fossils of plant life in Antarctica are difficult to come by because the movement of the massive ice sheets covering the landmass grinds and scrapes away the evidence.

"Deep sea cores are ideal to look for clues of past vegetation as the fossils deposited are protected from ice-sheet advances, but these are technically very difficult to acquire in the Antarctic and require international collaboration," said Warny, assistant professor of palynology at Louisiana State University.

"Ice cores can only go back about one million years," Feakins said. "Sediment cores allow us to go
'/>"/>

Contact: Robert Perkins
perkinsr@usc.edu
213-740-9226
University of Southern California
Source:Eurekalert

Page: 1 2

Related biology news :

1. Evaluation of microscopy techniques may help scientists to better understand ancient plants
2. Tongue analysis software uses ancient Chinese medicine to warn of disease
3. Like curry? New biological role identified for compound used in ancient medicine
4. Ancient giant turtle fossil revealed
5. Whale population size, dynamics determined based on ancient DNA
6. LSU research finds orangutans host ancient jumping genes
7. New coelacanth find rewrites history of the ancient fish
8. Ammonites found mini oases at ancient methane seeps
9. Ancient Egyptian cotton unveils secrets of domesticated crop evolution
10. Ancient whale species sheds new light on its modern relatives
11. Ancient civilizations reveal ways to manage fisheries for sustainability
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/10/2015)... TELTOW, Germany , August 10, 2015 ... a world leader in Eye Tracking Technology for more ... OEM Eye Tracking Platform for integration into all consumer ... reference designs for seamless integration of eye tracking into ... HMDs and augmented reality smart glasses. Omnivision,s leading sensor ...
(Date:8/6/2015)... , Aug. 6, 2015  Today, U.S. ... visit Crossmatch ™ to learn firsthand how ... protect data. Crossmatch is a world leader in ... and expertise are helping federal agencies and commercial ... security.   "The vast majority of ...
(Date:8/6/2015)... SAN JOSE, Calif. , Aug. 6, 2015 ... the leading developer of human interface solutions, today ... and TouchPad technologies on Windows 10. Microsoft leveraged ... fundamental to the operating system. ... and drivers are fully certified with Microsoft,s Precision ...
Breaking Biology News(10 mins):SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 2SMI Completes OEM Eye Tracking Platform to Cover All Consumer Displays 3Rep. Honda to Visit Crossmatch in Redwood City 2Synaptics Chosen for Human Interface Co-Development on Windows 10 2
... 27, 2013  Definiens, the global leader of image and ... it has appointed an Advisory Board comprising renowned industry ... its market expansion strategy, Definiens established the new Board ... tissue diagnostics and clinical digital pathology. Members of the ...
... caffeine, but scientists now have genetically engineered E. ... report in the journal ACS Synthetic Biology ... that promises practical uses ranging from decontamination of wastewater ... Barrick and colleagues note that caffeine and related chemical ...
... and the University of Oxford have been able to give ... provide paternal care. When the conditions are right, this strategy ... put a lot of effort into caring for offspring that ... sense at all because natural selection should design males to ...
Cached Biology News:Gilde Healthcare III Portfolio Company Definiens Establishes Advisory Board 2Gilde Healthcare III Portfolio Company Definiens Establishes Advisory Board 3Why sticking around is sometimes the better choice 2
(Date:8/27/2015)... ... ... Inc. Magazine released its annual list of the 5,000 fastest-growing privately held ... the three years through 2014. Being named to the Inc. 5000 list designates a ... , “We are thrilled to make the Inc. 5000 list for 2015,” stated ...
(Date:8/26/2015)... 26, 2015 /PRNewswire/ - iCo Therapeutics ("iCo" or "the ... results for the quarter ended June 30, 2015. ... dollars and presented under International Financial Reporting Standards ... respect to our Oral Amp B program, rapidly ... said Andrew Rae , President & CEO ...
(Date:8/26/2015)... 2015 Intrexon Corporation (NYSE: XON ), ... of its previously announced public offering of common stock, ... their option to purchase an additional 731,707 shares of ... per share.  The exercise of the underwriters, option brought ... by Intrexon to 5,609,756 shares and increased the total ...
(Date:8/26/2015)... ... August 26, 2015 , ... PRC Clinical, a Clinical ... relationships with local sponsors in southern California. The Clinical Trial Management Expert CRO seeks ... and regulatory pathways., , Stem Cell Meeting on the ...
Breaking Biology Technology:iLab Solutions Named to 2015 Inc. 5000 List 2iLab Solutions Named to 2015 Inc. 5000 List 3iCo Therapeutics Announces Second Quarter 2015 Financial Results 2iCo Therapeutics Announces Second Quarter 2015 Financial Results 3Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 2Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 3Intrexon Announces Closing of $230 Million Public Offering of Common Stock including Full Exercise of Underwriters' Option to Purchase Additional Shares 4PRC Clinical To Attend Major Industry Conferences And Meet Sponsor Companies In The San Diego Biotech Hub 2PRC Clinical To Attend Major Industry Conferences And Meet Sponsor Companies In The San Diego Biotech Hub 3
... Corp . President Paul Shain spoke on his ... Madisons monthly meeting. According to Shain, Berbees unique principles and ... dot-com era as other information technology-focused companies failed. , ,Started ... founded on the dogma of creating an environment for success, ...
... Internet access is now a reality for one rural ... system. Toronto-based WaveRider Communications Inc. is working ... Oakdale Electric Cooperative to implement its Last Mile ... to broadband Internet services. , ,The response in Mauston ...
... a talk at my local elementary school given by Peter ... of systems thinking. Systems thinking is a conceptual framework, body ... years, to train people to see the big picture ... how to make systematic change successfully. The essence of systems ...
Cached Biology Technology:Berbees success is based on companys history and culture 2Berbees success is based on companys history and culture 3Berbees success is based on companys history and culture 4Rural Wisconsin town gets high-speed Internet access 2Outsourcing: Net gain or shifting the pain? 2Outsourcing: Net gain or shifting the pain? 3
Goat polyclonal to Centaurin alpha 2**...
... immobilization can be coupled with a ligand such ... create an affinity matrix of choice. Affi-Gel 10 ... amines. Affi-Gel 10 gel couples neutral or basic ... 15 gel couples acidic proteins with pI less ...
Rabbit anti Mouse ZIC2 Preservative: NaN3...
Monocarboxylate (lactate) transporter 2...
Biology Products: