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:12/19/2014)... 2014  23andMe, Inc., the leading personal genetics company, today announced ... genetic ancestry of individuals from across the United ... than four hundred years ago, the United States ... from different continents. This study illuminates how American history and ...
(Date:12/17/2014)... 15, 2014  HITLAB SM announced today its completion ... its adherence to current U.S. Food and Drug Administration ... smart device and smart phone application trials utilizing the ... "HITLAB is determined to improve global healthcare access, ...
(Date:12/15/2014)... , Dec. 12, 2014 Research and Markets ... the "Global Facial Recognition Market 2015-2019" report ... Facial recognition is a technology used ... the overall facial feature of a person such as ...
Breaking Biology News(10 mins):23andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 2Global Facial Recognition Market 2015-2019: Key Vendors are 3M Cogent, Cognitec Systems, NEC and Safran Group 3
... Putnam Valley, NY. (June 26 , 2012) Researchers ... transplanting two varieties of stem cells into mouse cochlea ... cells and mouse embryonic stem (ES) cells demonstrate similar ... risk of tumor growth associated with transplanting iPS cells ...
... NEVERS, France, June 26, 2012 Polar ( ... assessment technology, together with LOOK , the inventor and ... of the first clipless cycling pedals to measure cycling power ... left/right balance and power output, and send the data directly ...
... discovered a new flu-fighting role for a well-known component ... cellular biology in the UGA Franklin College of Arts ... cell-signaling protein known as IL-15 to mice infected with ... times. "We gave the IL-15 intranasally and ...
Cached Biology News:Stem cell transplantation into mouse cochlea may impact future hearing loss therapies 2Polar And LOOK Launch The World's First Pedal-Based Power Cycling System 2Polar And LOOK Launch The World's First Pedal-Based Power Cycling System 3Polar And LOOK Launch The World's First Pedal-Based Power Cycling System 4UGA study reveals flu-fighting role for well-known immune component 2
(Date:1/22/2015)... (PRWEB) January 22, 2015 Diagenode, ... such as the Bioruptor® and complete solutions for ... for chromatin immunoprecipitation, alleviating the need for manual ... controls needed for ChIP of histones or transcription ...
(Date:1/22/2015)... , Jan. 22, 2015   GenoSpace , a precision ... tools to enable the broad use of genomic, imaging and ... the appointment of Michelle Munson , CEO of Aspera, ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 ...
(Date:12/24/2014)... , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, Inc. (NASDAQ: PTBI, ... announced the closing of an underwritten public offering of 3,500,000 ... an aggregate 3,500,000 shares of common stock, at an offering ... warrants have a per share exercise price of $5.00, are ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 GMO corn cases ... Syngenta, are in the process of being consolidated in a ... In Re: Syngenta AG MIR 162 Corn Litigation, MDL No. ... Kansas. , Management of the Syngenta GMO corn multidistrict litigation ...
Breaking Biology Technology:Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2GenoSpace Expands Board with Appointment of Michelle Munson 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2
... Aug. 16 ADVENTRX Pharmaceuticals,Inc. (Amex: ... company,focused on commercializing proprietary product candidates for ... announced that the U.S. Food and,Drug Administration ... ANX-510,or CoFactor(R) injection, which is currently being ...
... Drug Application in the Fourth ... ... positive results from a 12-week, Phase 3 clinical,trial of FENTORA(R) (fentanyl buccal ... chronic non-cancer pain,conditions. The study achieved statistical significance on the primary,endpoint. Results ...
... Presentations on the Topic of Drug Repurposing and ... Indian Clinical ... Inc., an,oncology-focused, clinical-stage biopharmaceutical company, announced today,that Chief Executive Officer, ... present at the 234th American Chemical,Society National Meeting on Sunday, ...
Cached Biology Technology:ADVENTRX Announces Fast Track Designation Granted By the FDA For CoFactor For the Treatment of Metastatic Colorectal Cancer 2ADVENTRX Announces Fast Track Designation Granted By the FDA For CoFactor For the Treatment of Metastatic Colorectal Cancer 3Cephalon Announces Positive Results from a Pivotal Study of FENTORA in Opioid-tolerant Patients with Non-cancer Breakthrough Pain 2Cephalon Announces Positive Results from a Pivotal Study of FENTORA in Opioid-tolerant Patients with Non-cancer Breakthrough Pain 3Cephalon Announces Positive Results from a Pivotal Study of FENTORA in Opioid-tolerant Patients with Non-cancer Breakthrough Pain 4Cephalon Announces Positive Results from a Pivotal Study of FENTORA in Opioid-tolerant Patients with Non-cancer Breakthrough Pain 5Vicus Therapeutics to Present at the 234th American Chemical Society National Meeting in Boston, MA 2Vicus Therapeutics to Present at the 234th American Chemical Society National Meeting in Boston, MA 3
ATP-binding cassette sub-family D member 4 (Peroxisomal membrane protein 69) (PMP69) (Peroxisomal membrane protein 1-like) (PXMP1-L) (P70R). [Source:Uniprot/SWISSPROT;Acc:O14678] Antigen: Recombi...
Rabbit polyclonal to TAB1 ( Abpromise for all tested applications). entrezGeneID: 10454 SwissProtID: Q15750...
Chicken polyclonal to HADHSC - Azide free ( Abpromise for all tested applications). Antigen: Amino acids 57-314 of HADHSC Entrez GeneID: 3033 Swiss Protein ID: Q16836...
...
Biology Products: