Navigation Links
When palm trees gave way to spruce trees
Date:6/17/2009

/p>

To arrive at a holistic picture of the climate of the transition, the researchers merged the plant data with physical information about the state of the atmosphere and ocean taken from chemical and isotopic information in the same sediments, and compared this to computer modelling of climate in the period.

"We can see that summer temperatures on land remained relatively warm throughout the Eocene/Oligocene transition, but that the period was marked by increasing seasonality," said Dr. Greenwood.

"Mean temperatures during the coldest month dropped by five degrees Celsius, to just above freezing," he said.

"This was probably not enough to create much in the way of continental ice on East Greenland," he said, "but it did wipe out palms and other subtropical trees such as swamp cypress. They were replaced by temperate climate trees such as spruces and hemlock."

The researcher said that, nonetheless, the middle period of the transition remained fairly warm. "Hickory and walnut were still present, but these became rare in the final stages," he said.

Although the march to a cooler world was gradual in northern latitudes, it was inevitable according to Dr. Greenwood.

"Changes in the earth's position in its orbit were leading a much greater seasonal range in radiation for polar regions and, overall, heat was becoming more concentrated in the tropics, largely due to a global drop in carbon dioxide levels in the atmosphere" he said.


'/>"/>

Contact: David Greenwood
greenwoodd@brandonu.ca
204-571-8543
Natural Sciences and Engineering Research Council
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Canada provides $1.4M for removal of hazardous trees from provincial recreation sites
2. Climate change predicted to drive trees northward
3. Fighting pollution the poplar way: Trees to clean up Indiana site
4. Why juniper trees can live on less water
5. Secrets of cooperation between trees and fungi revealed
6. Ancient oak trees help reduce global warming
7. Vine invasion? UWM ecologist looks at coexistence of trees and lianas
8. Extinction most likely for rare trees in the Amazon rainforest
9. Shade trees can protect coffee crops
10. Diversity of trees in Ecuadors Amazon rainforest defies simple explanation
11. Urban trees enhance water infiltration
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
When palm trees gave way to spruce trees
(Date:7/31/2015)... 31 juillet 2015 La 10e Conférence ... sera organisée par le BGI du 22 au ... en Chine. La conférence célèbre ... en 2006, l,ICG est devenue l,une des réunions ... des « omiques » et c,est aussi la plus dynamique, ...
(Date:7/31/2015)... SHENZHEN, China , July 31, 2015 The ... ) will be held by BGI from October 22-25, 2015, in ... The conference is celebrating its 10 th ... become one of the world,s most influential annual meetings in ... enthusiastic, and enjoyable scientific gatherings. ICG-10 focuses ...
(Date:7/23/2015)... July 23, 2015 Aware, Inc. (NASDAQ: AWRE ... reported financial results for its second quarter ended June 30, ... 2015 was $4.5 million, a decrease of 33% compared to ... in the second quarter of 2015 was $0.3 million, or ... $0.04 per diluted share, in the same period a year ...
Breaking Biology News(10 mins):La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 2La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 3The 10th International Conference on Genomics (ICG-10) to Open in October 2Aware, Inc. Reports Second Quarter 2015 Financial Results 2Aware, Inc. Reports Second Quarter 2015 Financial Results 3Aware, Inc. Reports Second Quarter 2015 Financial Results 4Aware, Inc. Reports Second Quarter 2015 Financial Results 5Aware, Inc. Reports Second Quarter 2015 Financial Results 6
... A Virginia Tech chemist has been awarded a $2.3 million ... research that will aid in the development of new heart ... Theresa Reineke, associate professor of chemistry in the College of ... designed to fund research that is in its earliest stages ...
... PITTSBURGHResearchers at Carnegie Mellon University and Intel Labs ... in netbooks with flash memory to create a server ... for data-intensive applications than the systems now used by ... this so-called Fast Array of Wimpy Nodes (FAWN) architecture ...
... team of researchers from Michigan State University and the University ... Udall Center of Excellence for Parkinson,s disease grant. The ... at the National Institutes of Health, makes MSU,s College of ... disease. Two new MSU researchers, Jack Lipton, Ph.D., ...
Cached Biology News:Chemist receives NIH New Innovator grant for genetic drug research 2Carnegie Mellon researchers save electricity with low-power processors and flash memory 2MSU becoming center of excellence for Parkinson's research 2
(Date:7/30/2015)... ... July 30, 2015 , ... GEA's Pony™ NS2006L ... operation up to 1500 bar. The sanitary design gauge of the NS2006L is ... , The Pony™ NS2006L homogenizer is an ideal solution for the processing of ...
(Date:7/29/2015)... (Q2 2015: +14% CER / 20% of sales) led the regional performance in ... , as well as solid contributions from Korea, India ... Middle East / Africa (Q2 2015: ... , Turkey and the United Kingdom ... excluding U.S. HPV sales, on demand across all customer classes. The top seven ...
(Date:7/29/2015)... 2015 Research and ... of the "Global Biosimilars Market, 2015 - ... The Global Biosimilars Market, 2015 - 2025, report ... biosimilars market. With the blockbuster biologics losing patent ... biosimilars are being viewed as viable substitutes to ...
(Date:7/29/2015)...  Indivior PLC (LON: INDV) today announced that the ... accepted and received Priority Review by the U.S. Food ... overdose. This naloxone nasal spray comes as a pre-filled ... into the nasal mucosa. 1 The device has ... be better equipped to help an opioid overdose victim. ...
Breaking Biology Technology:GEA Announces the Pony™ NS2006L… a Self-contained, High Pressure Lab Homogenizer for Product Development Ensuring Maximum Efficiency and Safety 2QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 2Global Biosimilars Market to 2025: Monoclonal Antibodies (mAbs), Insulin, Interferons, G-CSF/ GM-CSF, Erythropoietins and Others 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 2Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 3Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 4Indivior PLC Announces FDA Acceptance of Naloxone Nasal Spray New Drug Application With Priority Review 5
... JERUSALEM , May 26, 2010 , ... - Study Data Shows ORMD-0801 Resulted ... , ... systems, announced today that the,paper entitled, "Open-label study to assess the safety and pharmacodynamics,of ...
... 26 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (Nasdaq: SVA ), a,leading ... the 2010 Shanghai CPhI Exhibition, being held June 2-4,2010 . Sinovac,s ... Sinovac will showcase its commercialized products, including its,Healive, Anflu, Panflu and Panflu.1 ... ...
... (Nasdaq: TECH ) today announced that Roeland Nusse , Ph.D. ... will also serve as a member of Techne,s Nominations and Governance Committee. ... 28, 2010 .  Techne Corporation,s shareholders reelect all Directors on an annual ... Dr. Nusse has ...
Cached Biology Technology:Oramed Pharmaceuticals Announces Publication of Research Article on its Oral Insulin Capsule ORMD-0801 in Diabetes, Obesity and Metabolism 2Oramed Pharmaceuticals Announces Publication of Research Article on its Oral Insulin Capsule ORMD-0801 in Diabetes, Obesity and Metabolism 3Sinovac to Participate at 2010 Shanghai CPhI Exhibition 2Sinovac to Participate at 2010 Shanghai CPhI Exhibition 3Techne Corporation Announces That Dr. Roeland Nusse Has Accepted a Seat on Its Board of Directors 2
... Immunogen: Synthetic peptide derived from ... rat mouse dog and orangutang occludin ... human occludin protein. Reactivity: Human ... Reactivity with rat mouse dog and ...
Anti-ZFP-38/RU49 Family: Zinc Finger Peptide Sequence: SVKVEDKDFPSTCSKK...
Antibodies were affinity purified using epitopes specific to UBAP2L/NICE4 immobilized on solid support....
...
Biology Products: