Navigation Links
6 million years of savanna
Date:8/3/2011

Evolution of Humans and Their Relatives

In the new study, Cerling says he and colleagues developed "a new way to quantify the openness of tropical landscapes. This is the first method to actually quantify the amount of canopy cover, which is the basis for deciding if something is savanna."

Cerling does not dispute that East African savannas became more expansive within the past 2 million years, or that human ancestors and relatives likely spent time in narrow "gallery forests" along river corridors.

But he says the new method shows grasslands and wooded grasslands in other words, savannas have prevailed for more than 6 million years in the cradle of humanity, with tree cover less than about 40 percent at most sites. By definition, woodland has more than 40 percent tree cover, and a forest has more than 80 percent tree cover.

"In some periods, it was more bushy, and other times it was less bushy," he says. "Hardly anything could have been called a dense forest, but we can show some periods where certain environments were consistently more wooded than others. We find hominins (early humans, pre-humans and chimp and gorilla relatives) in both places. How early hominins partitioned their time between 'more open' and 'more closed' habitats is still an open question."

Cerling says even sparse woody canopy provided hominins with shade, some foods and refuge from predators.

Fossil evidence of hominins humans, their ancestors and early relatives such as chimps and gorillas date back to 4.3 million years and possibly 6 million years, Cerling says. The new method was used to look for and find savanna up to 7.4 million years ago.

"Currently, many scientists think that before 2 million years ago, things were forested [in East Africa] and savanna conditions have been present only for the past 2 million years," Cerling says. "This study shows that during the development of bipedalism [about 4 million years ago
'/>"/>

Contact: Lee Siegel
lee.siegel@utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. $3 million grant to aid minorities with uncontrolled diabetes
2. CWRU receives $2.1 million NIH grant to expand cystic fibrosis research models
3. BUSM awarded $9 million to investigate treatment for sickle cell disease using iPS cells
4. 96-million-year-old fossil suggests prehistoric crocodile Terminonaris was Texas native
5. SPO Secures Equity Line Facility of US$5 Million
6. NSF sponsors $18.5 million effort to create mind-machine interface
7. Johns Hopkins researchers awarded $32 million
8. Gladstone to receive $5.6 million in federal funds to seek a cure for AIDS
9. UTMB-led researchers awarded $7.8 million for Gulf spill study
10. NIH awards $17 million Program of Excellence Award in glycosciences to Brigham and Womens Hospital
11. Parkinsons Disease Foundation announces $1 million for novel studies into Parkinsons
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
6 million years of savanna
(Date:10/15/2014)... NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ("NXT-ID" or ... commerce market releases photos and video of the recent opening bell ... th . Gino Pereira , CEO of ... Mr. Chad A. Verdi rang the bell.  ... and employees "for their work and dedication in bringing the world,s ...
(Date:10/14/2014)... years since T. rex took its last ... is breathing life back into dinosaurs using high-powered computer ... has important implications for how dinosaurs used their noses ... of smell and cool their brains. , "Dinosaurs ... Jason Bourke, lead author of the new study published ...
(Date:10/14/2014)... October 14, 2014 – Scientists from The Scripps Research ... National Institutes of Health (NIH) to lead an investigation ... fever disease in Africa. The study aims to understand ... patients die, while others survive the inflection. , ... basic mechanism of how Lassa fever virus causes disease ...
Breaking Biology News(10 mins):Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 3Dinosaur breathing study shows that noses enhanced smelling and cooled brain 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 3Scripps Research Institute team receives $6.6 million to investigate deadly Lassa virus 2
... informal electronic waste salvage site in Ghana,s capital Accra ... pollutants over 50 times higher than risk-free levels. ... field are likewise polluted to varying degrees, all neighbours ... is scavenged for valuable metals - especially copper. Schoolchildren ...
... CHESTNUT HILL, Mass. (October 29, 2011) A major public ... thought leaders for a day-long examination of the contributions of ... university and to society. ,Science in the Liberal Arts ... free public symposium sponsored by BC,s Institute for the Liberal ...
... genome has been decoded. Of all the puzzles it contains, ... the blueprint for various proteins, the building blocks of each ... proteins control cell division in a healthy body, for instance? ... incessantly subdivide and control over proteins gets out of hand? ...
Cached Biology News:High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 2High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 3High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 4High toxic levels found at school, market neighboring informal e-waste salvage site in Africa 5Science in the liberal arts university 2Cell cultures from a machine 2
(Date:10/19/2014)... According to market research report “Outdoor Wi-Fi Market ... Global Advancements, Forecasts and Analysis (2013 - 2018)", ... with analysis and forecasting of the global revenues. ... and the restrains for this market with the ... Browse 65 market data tables and 69 figures ...
(Date:10/18/2014)... The report "1,6-Hexanediol Market by ... to 2019", analyzes the global market on the ... the industry details such as the key drivers, ... regions. , Browse 81 Market Data Tables and ... TOC on “1,6-Hexanediol Market by Application and by ...
(Date:10/18/2014)... The Asia-Pacific Liquid Crystal on Silicon (LCoS) display ... Asia-Pacific with analysis and forecast of revenue. This market ... expected to reach $380.0 million by 2018, at a ... through the TOC of the Asia-Pacific LCoS display market ... provided. This also provides a glimpse of the segmentation ...
(Date:10/18/2014)... 2014 According to a new market ... Type - Global Trends & Forecasts up till 2017”, ... in 2011. This value is expected to increase from ... with 10% CAGR during the same period. North America ... market in terms of hydraulic horse power supplied by ...
Breaking Biology Technology:Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 2Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5The 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 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 2Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 4
... 2011 EMG Laboratory ... the American Association of Neuromuscular & Electrodiagnostic Medicine,s ( ... Status. EMG Laboratory has provided advanced testing of ... Merrimack Valley and Cape Cod since 1997. Currently, it ...
... NEW YORK, Aug. 3, 2011 ... research report is available in its ... and Commercial Outlook 2011-2021 - discovering ... http://www.reportlinker.com/p0578545/Biomarkers-Technological-and-Commercial-Outlook-2011-2021---discovering-the-pharma-and-diagnostics-opportunities.html#utm_source=prnewswire&utm_medium=pr&utm_campaign=Genomics ...
... 2011 Informex , the leading meeting ... today announced the introduction of a new conference, ... the Biopharmaceutical Evolution, to be hosted October 5-6th, ... will cover on-trend topics regarding the future of ...
Cached Biology Technology:EMG Laboratory Attains Prestigious National Accreditation for Clinical Excellence in Neuromuscular Diagnosis 2EMG Laboratory Attains Prestigious National Accreditation for Clinical Excellence in Neuromuscular Diagnosis 3Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 2Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 3Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 4Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 5Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 6Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 7Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 8Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 9Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 10Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 11Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 12Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 13Biomarkers: Technological and Commercial Outlook 2011-2021 - Discovering the Pharma and Diagnostics Opportunities 14New Conference Offers Solutions for Success in the Growing Biologics Market 2New Conference Offers Solutions for Success in the Growing Biologics Market 3
ANXA11 Immunogen: ANXA11 (NP_001148, 406 a.a. ~ 506 a.a) partial recombinant protein with GST tag. Storage: -20 C, Avoid Freeze/Thaw Cycles *Available for distribution in the US only...
Anti-Flavocytochrome b Monoclonal, FITC Labeled Research Focus: other Storage: 4C Shipping Temperature: 4C...
... MKK6 (phospho S207) ( Abpromise ... Antigen: Synthetic phosphopeptide derived ... site of Serine 207 (V-D-S P ... ID: 5608 ...
Mouse monoclonal [1Q17] to TGE Virus peplomer ( Abpromise for all tested applications)....
Biology Products: