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:9/2/2014)... Air pollution regulations over the last decade in Taiyuan, ... there, accounting for a greater than 50% reduction in ... 2001 and 2010, according to researchers at the Columbia ... School of Public Health, the Shanxi Medical University, the ... and Shanghai Fudan University School of Public Health. , ...
(Date:9/2/2014)... In Bavaria, the Tithonian Konservat-Lagersttte of lithographic limestone ... discoveries of emblematic fossils from that area (for ... have found fossil insects in the French equivalent ... new species representing the oldest known water treader. ... equivalent Bavarian outcrops, fewer fossils have been obtained ...
(Date:9/2/2014)... stress in stride; others are done in by it. ... mechanisms of this so-called stress gap in mice with ... lead researchers to better understand the development of psychiatric ... each animal has unique experiences as it goes through ... can alter the expression of genes, and as a ...
Breaking Biology News(10 mins):Clean air halves health costs in Chinese city 2Exceptionally well preserved insect fossils from the Rhône Valley 2Discovery hints at why stress is more devastating for some 2Discovery hints at why stress is more devastating for some 3
... person, it triggers a series of biochemical reactions in immune-system ... , Usually, the result is an effective immune response, leading ... recovery. But in the case of some of the world’s ... as well as the influenza virus strain responsible for the ...
... homes have smoke detectors, cells have an enzyme that ... the production of a key molecule in the biochemical ... investigators at St. Jude Children's Research Hospital. This breakdown ... while reducing the chance that excess fatty acids will ...
... associated with a risk of developing type-2 diabetes have been ... research, published online in Nature, is the first time the ... detail. It should enable scientists to develop a genetic test ... type 2, commonly known as type-2 diabetes. , ...
Cached Biology News:New study may show how to forestall a fatal, virus-caused immune-system meltdown 2New study may show how to forestall a fatal, virus-caused immune-system meltdown 3Protein sensor for fatty acid buildup in mitochondria 2Breakthrough in understanding type-2 diabetes as key genes identified 2
(Date:9/2/2014)... Nanoparticles, engineered materials about a billionth of a meter ... are tiny, they can benefit human health, as in ... interfere with it through viruses, air pollution, traffic emissions, ... at Washington University in St. Louis, led by Lan ... in Electrical & Systems Engineering, and their collaborators at ...
(Date:9/2/2014)... 2014 Press attending the Project LIBERTY ... advantage of the people and events in Emmetsburg on ... available throughout the day. Additionally, we will do our ... DSM representatives as well as representatives from the local ... , Please remember to RSVP to Matt Merritt ...
(Date:9/2/2014)... , Sept. 2, 2014  Technology Applications International ... that its wholly-owned subsidiary Renuell Int,l, Inc. has signed ... and Space Administration ("NASA") at the Johnson Space Center ... See photos: tapplic.com/houstonphotos/ ... are very pleased to announce our latest, exclusive agreement ...
(Date:9/2/2014)... 2014 Orexigen Therapeutics, Inc. (Nasdaq: ... Trademark Office (PTO) has issued a patent related to ... loss. NB32 is a fixed-dose combination of naltrexone sustained ... No. 8,815,889 claims methods for treating insulin resistance using ... in 2024. If NB32 is approved for use in ...
Breaking Biology Technology:Engineers develop new sensor to detect tiny individual nanoparticles 2Engineers develop new sensor to detect tiny individual nanoparticles 3Press agenda for Project LIBERTY Grand Opening 2Press agenda for Project LIBERTY Grand Opening 3Press agenda for Project LIBERTY Grand Opening 4Press agenda for Project LIBERTY Grand Opening 5Technology Applications International Corporation Subsidiary Enters Into Additional Exclusive Agreement with NASA at a Signing Ceremony at the Johnson Space Center In Houston, Texas 2Technology Applications International Corporation Subsidiary Enters Into Additional Exclusive Agreement with NASA at a Signing Ceremony at the Johnson Space Center In Houston, Texas 3Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 2Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 3Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 4
... (Nasdaq: NTII ), today announced that Paul E. ... Rodman & Renshaw,10th Annual Healthcare Conference November 10 to ... presentation will take place at 3:15 p.m. (ET) on,November ... be accessed by going to:, http://investor.shareholder.com/ntii/events.cfm , ...
... of $0.73, up 192% from third quarter 2007, - New business ... business authorizations of $1 billion at Sept. 30, 2008, up 16% ... from Dec. ... global full-service clinical research organization, today reported,record net income of $11.0 million or ...
... 67% from Same Prior Year Period, DUBLIN, Calif., ... pharmaceutical company dedicated to the discovery and,development of novel ... and nine months ended September 30, 2008., Total ... compared,with $6.1 million for the same prior year period. ...
Cached Biology Technology:Kendle Reports Record 3Q 08 Net Income and Total Business Authorizations 2Kendle Reports Record 3Q 08 Net Income and Total Business Authorizations 3Kendle Reports Record 3Q 08 Net Income and Total Business Authorizations 4Kendle Reports Record 3Q 08 Net Income and Total Business Authorizations 5Kendle Reports Record 3Q 08 Net Income and Total Business Authorizations 6Kendle Reports Record 3Q 08 Net Income and Total Business Authorizations 7Kendle Reports Record 3Q 08 Net Income and Total Business Authorizations 8SuperGen Reports 2008 Third Quarter Financial Results 2SuperGen Reports 2008 Third Quarter Financial Results 3SuperGen Reports 2008 Third Quarter Financial Results 4SuperGen Reports 2008 Third Quarter Financial Results 5SuperGen Reports 2008 Third Quarter Financial Results 6SuperGen Reports 2008 Third Quarter Financial Results 7SuperGen Reports 2008 Third Quarter Financial Results 8SuperGen Reports 2008 Third Quarter Financial Results 9SuperGen Reports 2008 Third Quarter Financial Results 10
... EZ DNA Methylation Kit uses a simplified ... DNA methylation analysis. The kit is based ... place between cytosine and sodium bisulfite where ... DNA Methylation Kits innovative in-column desulphonation reaction ...
... EnzoLyte MG Phosphate Assay Kit is ... formed between Malachite Green, molybdate and free ... reaction can be conveniently measured on a ... reader. The non-radioactive colorimetric assay kits have ...
... of digital x-ray detectors from KUBTEC represents ... with 12 to 16 bit digital interface. ... photodiode array sensor with pixel spacing down ... in low x-ray energies (10-50 kV) and ...
... Arrays are intended for laboratory research use ... in neutral buffered formalin and embedded in ... performed by certified pathologists. Tissue cores ... relocated into a new recipient paraffin block, ...
Biology Products: