Navigation Links
New Geology study raises questions about long-held theories of human evolution
Date:1/31/2013

ainforests had already disappeared by that pointreplaced by grasslands and seasonally dry forests some time before 12 million years ago.

In addition, the tropical C4-type grasses and shrubs of the modern African savannah began to dominate the landscape earlier than thought, replacing C3-type grasses that were better suited to a wetter environment. (The classification of C4 versus C3 refers to the manner of photosynthesis each type of plant utilizes.)

While earlier studies on vegetation change through this period relied on the analysis of individual sites throughout the Rift Valleyoffering narrow snapshotsFeakins took a look at the whole picture by using a sediment core taken in the Gulf of Aden, where winds funnel and deposit sediment from the entire region. She then cross-referenced her findings with Levin who compiled data from ancient soil samples collected throughout eastern Africa.

"The combination of marine and terrestrial data enable us to link the environmental record at specific fossil sites to regional ecological and climate change," Levin said.

In addition to informing scientists about the environment that our ancestors took shape in, Feakins' study provides insights into the landscape that herbivores (horses, hippos and antelopes) grazed, as well as how plants across the landscape reacted to periods of global and regional environmental change.

"The types of grasses appear to be sensitive to global carbon dioxide levels," said Liddy, who is currently working to refine the data pertaining to the Pliocene, to provide an even clearer picture of a period that experienced similar atmospheric carbon dioxide levels to present day. "There might be lessons in here for the future viability of our C4-grain crops," says Feakins.


'/>"/>

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

Page: 1 2

Related biology news :

1. GEOLOGY starts 2013 with 25 new articles posted online ahead of print
2. GEOLOGY returns to Naica Cave, Mexico, and extends its reach to Mercury
3. GEOLOGY speeding top science to online platform
4. GEOLOGY adds 30 new articles online
5. Geologys Mystery Interval, the Great Deepening, and the largest kill-off in Earth history
6. Geosphere: How geology, technology, modeling, and mapping see into Earths past and present
7. Sandy beaches, hydrocarbon reservoirs, tectonic tilting: Its all about geology
8. From 503-million-year-old fungi to recent earthquakes: New Geology posted ahead of print
9. Seismic zones, river deltas, landslides, fossil reptiles, and more new Geology science
10. New study highlights impact of environmental change on older people
11. UNC study may lead to treatments that are effective against all MRSA strains
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/15/2014)... virus is spreading rapidly and to an unexpected extent. ... the past and the virus shows a new disease ... before. For this reason, the German National Academy of ... and Engineering, and the Union of the German Academies ... the Ebola epidemic today. , In the statement the ...
(Date:10/15/2014)... Oct. 15, 2014   Neurotechnology , a ... the availability of the VeriLook Surveillance 3.0 ... provides real-time biometric face identification using live video ... cameras. The new version not only identifies faces ... from objects while they are moving through the ...
(Date:10/14/2014)... the house fly genome for the first time, revealing ... insect that thrives in pathogen-rich dung piles and garbage ... journal Genome Biology , will increase understanding of ... quickly adapt to resist insecticides, which could lead to ... carry and transmit more than 100 human and animal ...
Breaking Biology News(10 mins):Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3House fly genome reveals expanded immune system 2
... The largest living organisms on the planet, the big, old ... are dying. A report by three of the world,s ... warns of an alarming increase in deathrates among trees ... savannahs, farming areas and even in cities. "It,s a ...
... by a Northwestern University professor and now tested on ... shown to alleviate symptoms within hours, have good safety ... days from a single dose. The novel ... -- a very different approach from existing antidepressants. The ...
... for long periods will find ways to resist the drugsby ... modifying the compounds so they,re no longer toxic. Now ... in soil. In a paper published on Dec. 6 in ... group of Canadian and French scientists report on a soil ...
Cached Biology News:The world's big trees are dying 2The world's big trees are dying 3New antidepressant acts very rapidly and is long lasting 2New antidepressant acts very rapidly and is long lasting 3Antibiotic-eating bug unearthed in soil 2Antibiotic-eating bug unearthed in soil 3
(Date:10/19/2014)... October 19, 2014 The Asia-Pacific ... market in Asia-Pacific with analysis and forecast of ... Asia Pacific Bromine Market report, to get an ... provides a glimpse of the segmentation in the ... tables and figures. , http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html ...
(Date:10/19/2014)... October 19, 2014 The Asian Orthopedic braces ... in Asia with analysis and forecast of revenue. The Orthopedic ... grow to around $416.5 million by 2018, at a developing ... the TOC of the Asian Orthopedic braces and support systems ... This also provides a glimpse of the segmentation of orthopedic ...
(Date:10/18/2014)... October 18, 2014 The Asia-Pacific ... and segments the bio-based advanced phase change material ... revenue. , Browse through the TOC of the ... to get an idea of the in-depth analysis ... segmentation in the Asia-Pacific bio-based advanced phase change ...
(Date:10/18/2014)... The Asia-Pacific Liquid Crystal on Silicon ... market in Asia-Pacific with analysis and forecast of revenue. ... and is expected to reach $380.0 million by 2018, ... , Browse through the TOC of the Asia-Pacific LCoS ... in-depth analysis provided. This also provides a glimpse of ...
Breaking Biology Technology:The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 2The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 4The Asia-Pacific Bio-based Advanced Phase Change Materials Market is estimated to grow to $39.8 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bio-based Advanced Phase Change Materials Market is estimated to grow to $39.8 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Bio-based Advanced Phase Change Materials Market is estimated to grow to $39.8 million by 2018 - New Report by MicroMarket Monitor 4The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 3
... Enterologics, Inc  ( ELGO.OB ) announced today that ... and its subsidiary BioBalance LLC from New York Health ... first probiotic biotherapeutic product, E. coli M17, or Probactrix®. ... Investigational New Drug application (IND) with the ...
... Sept. 8, 2011 Reportlinker.com announces that ... in its catalogue: Global ... http://www.reportlinker.com/p0611079/Global-D-Amino-Acids-Industry.html#utm_source=prnewswire&utm_medium=pr&utm_campaign=Biotechno This report analyzes ... US$ Million. The report provides separate comprehensive ...
... 2011 Debiopharm Group™ (Debiopharm), a ... drug development and companion diagnostics, will present tomorrow ... Professor Stefano Piccolo as well as two inaugural ... Professor Etienne Meylan and Doctor Volker Busskamp. The ...
Cached Biology Technology:Enterologics Completes Acquisition of BioBalance Corp and Probiotic Product From New York Health Care, Inc 2Enterologics Completes Acquisition of BioBalance Corp and Probiotic Product From New York Health Care, Inc 3Enterologics Completes Acquisition of BioBalance Corp and Probiotic Product From New York Health Care, Inc 4Global D-Amino Acids Industry 2Global D-Amino Acids Industry 3Global D-Amino Acids Industry 4Global D-Amino Acids Industry 5Global D-Amino Acids Industry 6Global D-Amino Acids Industry 7Global D-Amino Acids Industry 8Global D-Amino Acids Industry 9Global D-Amino Acids Industry 10Global D-Amino Acids Industry 11Global D-Amino Acids Industry 12Global D-Amino Acids Industry 13Global D-Amino Acids Industry 14Global D-Amino Acids Industry 15Global D-Amino Acids Industry 16Debiopharm Group™ Presents the 'Debiopharm Group™ Life Sciences Award 2011' and two 'Junior Debiopharm Group™ Awards 2011' at the ISREC 2011 Life Sciences Symposium 2Debiopharm Group™ Presents the 'Debiopharm Group™ Life Sciences Award 2011' and two 'Junior Debiopharm Group™ Awards 2011' at the ISREC 2011 Life Sciences Symposium 3
...
... White powder Assay: 1.5 - 2.0 Bleomycin units/mg Identity (A,B): ... Drying: less than or equal to 6.0% Copper (Cu): less ... 55 - 70% B 2 : 25 - 32% A ... 90% B 4 : less than or equal to 1.0% ...
6 x Blend of rTth DNA Polymerase and Tli to provide optimized amounts of both 5-3 and 3-5 proofreading activity...
Economical and manually filled LN2 vacuum insulated storage container offers high capacity and low nitrogen consumption while offering convenient storage of samples....
Biology Products: