Navigation Links
Scientists reconstruct pre-Columbian human effects on the Amazon Basin
Date:6/18/2012

Small, shifting human populations existed in the Amazon before the arrival of Europeans, with little long-term effect on the forest.

That's the result of research led by Crystal McMichael and Mark Bush of the Florida Institute of Technology (FIT). The finding overturns the idea the Amazon was a cultural parkland in pre-Columbian times with large human populations that transformed vast tracts of the landscape.

The Amazon Basin is one of the highest biodiversity areas on Earth. Understanding how it was modified by humans in the past is important for conservation and for understanding the ecological processes in tropical rainforests.

McMichael, Bush and a team of researchers looked at how widespread human effects were in Amazonia before Europeans arrived. They published their results in this week's issue of the journal Science.

"The findings have major implications for how we understand the effect of the land-use change now occurring in Amazonia," said Alan Tessier, program director in the National Science Foundation's Division of Environmental Biology, which funded the research.

"Making the assumption that this system is resilient to deforestation, it turns out, isn't a position supported by historical evidence," Tessier said.

If the pre-Columbian Amazon was a highly altered landscape, then most of the Amazon's current biodiversity could have come from human effects.

The team retrieved 247 soil cores from 55 locations throughout the central and western Amazon, sampling sites that were likely disturbed by humans, such as river banks and other areas known from archaeological evidence to have been occupied by people.

They used markers in the cores to track the histories of fire, vegetation and human alterations of the soil.

The scientists conclude that people lived in small groups, with larger populations in the eastern Amazon--and most people lived near rivers.

They did not li
'/>"/>

Contact: Cheryl Dybas
cdybas@nsf.gov
703-292-7734
National Science Foundation
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Scientists tie DNA repair to key cell signaling network
2. Top young Latin-American scientists named Pew Biomedical Fellows
3. 22 of Americas most promising scientists selected as Pew Biomedical Scholars
4. Berkeley Lab scientists help define the healthy human microbiome
5. Consortium of scientists maps the human bodys bacterial ecosystem
6. Citizen scientists to document biodiversity with high-resolution imagery during summer solstice
7. Evaluation of microscopy techniques may help scientists to better understand ancient plants
8. Dont feel like exercise? Scientists find compound that may help you work out harder
9. Scientists identify mechanism for regulating plant oil production
10. NYBG scientists identify 81 new plant and fungus species
11. Scientists find that rain may not always be a welcome thing to waterbirds
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists reconstruct pre-Columbian human effects on the Amazon Basin
(Date:7/11/2014)... under the normal circumstances, astrocytes participate in ... environment, and exhibit therapeutic and repairing effects ... studies have found that nerve cells differentiated ... have reduced viability, which produces influences on ... Kailuan General Hospital, Hebei United University, China ...
(Date:7/11/2014)... July 11, 2014 Research and Markets ... Biometrics Technology Market - Industry Analysis Size Share Growth ... offering. http://photos.prnewswire.com/prnh/20130307/600769 ... has created a need for high level security in ... personnel authentication such as username and passwords, tokens etc. ...
(Date:7/11/2014)... Rio de Janeiro, Brazil- In the brains of ... mechanism that allows an electric or chemical signal ... another. Chemical synapses, which are the most abundant ... inhibitory. Synapse formation is crucial for learning, memory, ... and inhibitory synapses critical for brain function. ...
Breaking Biology News(10 mins):International Biometrics Technology Market - Industry Analysis Size Share Growth Trends and Forecast to 2019 2Blame it on the astrocytes 2
... number one killer in the world and India carries more ... set to rise: it is predicted that by 2010 India,s ... Today, an international team of 25 scientists from four countries ... the world,s population carries a mutation almost guaranteed to lead ...
... of yeast cells has resulted in the most detailed ... a Texas A&M University chemical engineering professor whose findings ... until now have remained mostly theory., Working with populations ... Katy Kao, assistant professor in the Artie McFerrin Department ...
... new, international competition called the Digging into Data ... the Joint Information Systems Committee (JISC) from the ... (NEH) and the National Science Foundation (NSF) from ... Humanities Research Council (SSHRC) from Canada. ...
Cached Biology News:The heart disease mutation carried by 60 million 2Evolutionary process more detailed than previously believed, study shows 2Evolutionary process more detailed than previously believed, study shows 3Evolutionary process more detailed than previously believed, study shows 4Leading research agencies announce new international competition: "The digging into data challenge" 2
(Date:7/10/2014)... 2014 Deep Knowledge Ventures last ... on ‘Commercialising Longevity Research’ and welcomed a host ... London Bioscience Innovation Center for the event, organised ... Analytics Ltd. The meeting highlighted the need for ... for age-related disease, as well as the crucial ...
(Date:7/10/2014)... OMICS Group’s 5th International conference and ... 2014 at Double Tree by Hilton Beijing, China is ... Analytical & Bioanalytical research methods only to facilitate improved ... occasion, Dr. Srinubabu Gedela, MD of OMICS Group Inc ... remarkable one in bringing a unique and international mix ...
(Date:7/10/2014)... Capital, a firm specializing in acquiring and managing food ... the Slim-Fast brand from Unilever. Unilever will retain a ... were not disclosed. Slim-Fast is a branded ... shakes, powders, bars and snacks to retail customers throughout ... United Kingdom and Ireland.  The ...
(Date:7/10/2014)... help in the fight against terrorism with the creation ... explosives with the use of light and special glass ... Actuators B: Chemical , the researchers describe a novel ... as low as 6.3 ppm (parts per million). It ... , "Traditionally explosives detection has involved looking for metals ...
Breaking Biology Technology:DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Kainos Capital Acquires Slim-Fast From Unilever 2Detecting trace amounts of explosives with light 2
... Corp. said it has bought all outstanding stock ... handles bank transactions and check image processing. , ,Metavante, ... said in October that it would buy VectorSGIs stock ... wholly owned subsidiary. The move followed Metavantes acquisition of ...
... Jim Doyle, right, is joined by Commerce Sec. Cory ... Wis. Wisconsins Department of Commerce will fund ... and other assistance at centers around the state, Governor ... provide $1 million per year for five years, he ...
... U.S. Supreme Court made a patent-law decision on Monday that ... sector. , ,The court denied an appeal in Univ. ... solidifies the decision that was made by the U.S. Court ... patent because the inventor did not provide an adequate written ...
Cached Biology Technology:State and university form network for entrepreneurial outreach 2State and university form network for entrepreneurial outreach 3Describe your invention, or your biotech patent may be worthless 2Describe your invention, or your biotech patent may be worthless 3Describe your invention, or your biotech patent may be worthless 4Describe your invention, or your biotech patent may be worthless 5
... gun low-pressure system, 220-240 V, is used for ... handheld device employs an adjustable helium pulse to ... from the inner wall of a small plastic ... be used for in situ, in vitro, in ...
... Hybridization Wash Pack provides optimized blocking ... Preparation Quality Clarifier: Ready-to-use wash solutions ... SigmaScreen(tm) APS Coated Slides for Microarrays ... Hybridization Blocking Buffer: 1L • Microarray ...
Mouse polyclonal antibody raised against a partial recombinant MHC2TA. NCBI Entrez Gene ID = 4261...
Mouse monoclonal antibody raised against a partial recombinant JRKL. NCBI Entrez Gene ID = JRKL...
Biology Products: