Navigation Links
Environmental setting of human migrations in the circum-Pacific Region
Date:10/10/2007

A new study by Kevin Pope of Geo Eco Arc Research and John Terrell of The Field Museum adds insight into the migration of anatomically modern humans out of Africa and into Asia less than 100,000 years before present (BP). The comprehensive review of human genetic, environmental, and archaeological data from the circum-Pacific region supports the hypothesis, originally based largely on genetic evidence, that modern humans migrated into eastern Asia via a southern coastal route. The expansion of modern human populations into the circum-Pacific region occurred in at least four pulses, in part controlled by climate and sea level changes in the Late Pleistocene and Holocene epochs. The initial out of Africa migration was thwarted by dramatic changes in both sea level and climate and extreme drought in the coastal zone. A period of stable climate and sea level 45,000-40,000 years BP gave rise to the first major pulse of migration, when modern humans spread from India, throughout much of coastal southeast Asia, Australia, and Melanesia, extending northward to eastern Russia and Japan by 37,000 years BP.

The northward push of modern humans along the eastern coast of Asia stalled north of 43 N latitude, probably due to the inability of the populations to adjust to cold waters and tundra/steppe vegetation. The ensuing cold and dry Last Glacial period, ~33,000-16,000 year BP, once again brought dramatic changes in sea level and climate, which caused abandonment of many coastal sites. After 16,000 years BP, climates began to warm, but sea level was still 100 m below modern levels, creating conditions amenable for a second pulse of human migration into North America across an ice-free coastal plain now covered by the Bering Sea.

The stabilization of climate and sea level in the early Holocene (8,000-6,000 years BP) supported the expansion of coastal wetlands, lagoons, and coral reefs, which in turn gave rise to a third pulse of coastal settlemen
'/>"/>

Contact: Davina Quarterman
davina.quarterman@oxon.blackwellpublishing.com
01-865-476-307
Blackwell Publishing Ltd.
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study reveals new technique for fingerprinting environmental samples
2. Compounds in plastic packaging act as environmental estrogens altering breast genes
3. UN environmental agency steps up battle against marine pollution
4. Grass makes environmentally friendly biofuel
5. Environmental chemical cocktail may sabotage sperm
6. Storing carbon to combat global warming may cause other environmental problems, study suggests
7. MRSA study demonstrates need for frequent hand washing and environmental disinfection in health care settings
8. Environmental lessons from tsunami as worlds coastal population doubles
9. A radical solution for environmental pollution
10. NIEHS launches website with information for assessing environmental hazards from Hurricane Katrina
11. Plant genes identified that can form basis for crops better adapted to environmental conditions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2014)... KNOXVILLEToday,s students in college biology and other science ... in quantitative ways, and now they have a ... for the Life Sciences," published this month by ... National Institute for Mathematical and Biological Synthesis (NIMBioS), ... that can be used to explore and explain ...
(Date:8/19/2014)... A team of UTSA researchers has been awarded a ... Technology and Training (NCPTT), an office of the National ... The grant will fund a one-year study of the ... of historic homes in hot, humid climates. , Radiant ... or attics that reflect heat back, thereby reducing the ...
(Date:8/19/2014)... to humans and animals in a number of ways. ... them to regrow entire organs. After being struck by ... entire crown. But there is one major downside to ... to the habitats in which they live and therefore ... to this dilemma, plants have developed mechanisms that enable ...
Breaking Biology News(10 mins):New textbook introduces undergraduates to mathematics for the life sciences 2UTSA researcher awarded $38K+ to evaluate energy efficiency options for historic homes 2UTSA researcher awarded $38K+ to evaluate energy efficiency options for historic homes 3How steroid hormones enable plants to grow 2
... million people in 36 countries of sub-Saharan Africa are ... African sleeping sickness. The disease is caused by organisms ... African sleeping sickness affects approximately 500,000 people in sub-Saharan ... Because the trypanosome has an exceptional genetic strategy for ...
... headed by Professor Hans-Georg Kräusslich at Heidelberg University ... Applied Tumor Virology of the Deutsches Krebsforschungszentrum (German ... to label Human Immunodeficiency Viruses (HIV) for visual ... virus. , The labeling permits scientists to observe ...
... virologists headed by Professor Hans-Georg Kräusslich at Heidelberg ... of Applied Tumor Virology of the Deutsches Krebsforschungszentrum ... first to label Human Immunodeficiency Viruses (HIV) for ... the virus. , The labeling permits scientists to ...
Cached Biology News:Newly discovered protein an important tool for sleeping sickness research 2New Species of Coral Discovered Off Southern California 2Virologists make major step towards understanding the process of HIV infection 2
(Date:8/19/2014)... -- Research and Markets  has announced the addition of the ... report to their offering. This report analyzes ... Thousands by the following Product Segments: Media, Sera, and Reagents. ... Canada , Japan , ... Latin America . Annual estimates and forecasts are provided for ...
(Date:8/19/2014)... Cellgen Diagnostics today launched ... a corporate lab for its genetic-based medical testing ... a critical component in the move from today’s ... of personalized medicine – a more predictive, preventive, ... contributions will support Cellgen’s intent to develop the ...
(Date:8/19/2014)... 19, 2014 Robin Williams’ passing is ... take on an individual. Symptoms range from slowness ... problems swallowing and severe depression. Parkinson’s disease progressively ... of dopamine producing neurons of the brain. As ... that slowly and progressively gets worse, they look for ...
(Date:8/19/2014)... 19, 2014 Research and ... the "Spectroscopy Equipment and Accessories - ... their offering. This report ... and Accessories in US$ Thousands by the ... Raman Spectrometers, NMR-EPR Spectrometers, Near Infrared (NIR) ...
Breaking Biology Technology:Global Cell and Tissue Culture Supplies - Strategic Business Report 2014 2Cellgen Diagnostics Launches Indiegogo Crowdfunding Campaign for DNA Medical Testing Device 2Cellgen Diagnostics Launches Indiegogo Crowdfunding Campaign for DNA Medical Testing Device 3As We Mourn Robin Williams’ Passing, His Death Sheds Light on Patients Struggling with Parkinson’s Disease 2As We Mourn Robin Williams’ Passing, His Death Sheds Light on Patients Struggling with Parkinson’s Disease 3Global Spectroscopy Equipment and Accessories - Strategic Business Report 2014 2
... worked for almost seven years in secret. , Most ... Goehner,s materials characterization department at Sandia National Laboratories was ... containing bacillus anthracis, the spores that cause the disease ... 2001 to several news media offices and to two ...
... in the nanocrystals of semiconductors to cool more slowly ... the potential to improve satellite communications and the generation ... these electronsin this case, by more than 30 timescould ... Guyot-Sionnest, Professor of Chemistry and Physics at the University ...
... Nov. 13 Anadys Pharmaceuticals,Inc. (Nasdaq: ANDS ) ... &,Company, LLC,s Focus on Infectious Disease Conference on Thursday, ... at the Needham and Company,LLC,s office in New York ... Officer of Anadys,will present an overview of Anadys and ...
Cached Biology Technology:FBI unveils science of anthrax investigation 2FBI unveils science of anthrax investigation 3New research expected to improve laser devices and make photovoltaics more efficient 2Anadys Pharmaceuticals to Present at the Needham Focus on Infectious Disease Conference 2
... TriEx Sf9 Cells and TriEx Insect Cell ... pTriEx baculovirus constructs. This cell/medium combination has ... growth and high protein expression levels observed ... vectors. Please note that our Ready-Plaque Sf9 ...
...
...
...
Biology Products: