Navigation Links
Ancient Americans took cold snap in their stride
Date:4/12/2010

Paleoindian groups* occupied North America throughout the Younger Dryas interval, which saw a rapid return to glacial conditions approximately 11,000 years ago. Until now, it has been assumed that cooling temperatures and their impact on communities posed significant adaptive challenges to those groups. David Meltzer from the Southern Methodist University in Dallas, USA, and Vance Holliday from the University of Arizona in Tucson, USA, suggest otherwise in their review of climatic and environmental records from this time period in continental North America, published in Springer's Journal of World Prehistory.

From their analysis, they conclude that on the Great Plains and in the Rocky Mountains, conditions were in reality less extreme and therefore may not have measurably added to the challenge routinely faced by Paleoindian groups, who during this interval, successfully dispersed across the diverse habitats of Late Glacial North America.

Meltzer and Holliday question whether the impact of cooling on Pleistocene North Americans was actually that pronounced or widespread and, if it was, whether it was similarly abrupt and severe, and in the same direction, across North America. Their comprehensive review of the climate and environment of North America during that time and its possible impact suggests that the Young Dryas age cooling was not as sudden, extensive, or severe as has previously been suggested and the notion that these conditions may have taken the Paleoindians by surprise is questionable.

The authors conclude: "All things considered, it is likely that across most of North America, south of the retreating ice sheets, Paleoindians were not constantly scrambling to keep up with Younger Dryas age climate changes. After all, adapting to changing climatic and environmental conditions was nothing new to them it was what they did."


'/>"/>

Contact: Corinna Schaefer
corinna.schaefer@springer.com
49-622-148-78414
Springer
Source:Eurekalert

Page: 1

Related biology news :

1. Scientists retrace evolution with first atomic structure of an ancient protein
2. CU-Boulder team discovers first ancient manioc fields in Americas
3. Ancient organisms discovered in Canadian gold mine
4. Amber specimen captures ancient chemical battle
5. Ancient whale fall from Californias Año Nuevo Island one of youngest, most complete known
6. Ancient whale fall from Californias Ao Nuevo Island one of youngest, most complete known
7. 454 Sequencing: Science paper describes a novel, highly efficient method of sequencing ancient DNA
8. Newfound ancient African megadroughts may have driven the evolution of humans and fishes
9. Ancient amphibians left full-body imprints
10. Scientists melt million-year-old ice in search of ancient microbes
11. Ancient fish bones reveal impacts of global warming beneath the sea
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/28/2014)... Children,s Research Hospital study found that 73 percent of ... risk of developing metabolic syndrome and related health problems ... appear in the current issue of the journal ... adult survivors of childhood cancer in the study had ... like high blood pressure, abdominal obesity, elevated triglyceride and ...
(Date:7/28/2014)... -- Research and Markets has announced the ... 2014-2018" report to their offering. ... analyze biological data. These systems capture biological traits such ... and hand measurements from the subject and compare the ... purpose of a biometrics system is to identify and ...
(Date:7/28/2014)... Researchers using statistical tools to map social connections ... traditional observational techniques, shedding light on prairie dog ... bubonic plague and guide future conservation efforts. The ... State University and the National Evolutionary Synthesis Center ... are subject to bubonic plague," says Dr. Jennifer ...
Breaking Biology News(10 mins):Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3Biometrics Market in Latin America 2014-2018 2Social network research may boost prairie dog conservation efforts 2
... -- Chronic water quality problems caused by agricultural ... the burning of fossil fuels leads to oxygen depletion, ... pollution is prevalent in many coastal marine and estuarine ... North America and although many efforts have been taken ...
... has revealed the mechanism that binds skin cells tightly ... for painful and debilitating skin diseases and also lethal ... of Life Sciences, has found that the glue molecules ... making a very tough, resilient structure. Further investigation on ...
... can be an opportunity for researchers to foster respectful ... This shift is proposed in a policy forum appearing ... of the American Academy for the Advancement of Science. ... Practices and Participant Preferences: The Growing Gulf" recommend new ...
Cached Biology News:Could oysters be used to clean up Chesapeake Bay? 2Cell binding discovery brings hope to those with skin and heart problems 2Gulf grows between research practice and participant preferences in genetic studies 2Gulf grows between research practice and participant preferences in genetic studies 3Gulf grows between research practice and participant preferences in genetic studies 4
(Date:7/28/2014)... of building materials using light, developed by researchers at ... that are often considered the realm of science fiction, ... Although cloaked starships won,t be a reality for quite ... constructing materials with building blocks a few billionths of ... way that light flies through them, and works on ...
(Date:7/28/2014)... According to a new market research report published ... Joint) Market (By Technology - Stem Cell Therapy, ... Graft Substitutes, Osteoarticular Diseases, Allogeneic Products, Autogenic Products ... Growth, Trends and Forecast, 2013 - 2019" the ... valued at USD 2.6 billion in 2012 and ...
(Date:7/28/2014)... , July 28, 2014 ... report  "Microbial Identification Market by Products (Consumables, Instruments, Services), ... Beverages), End User (Detection, Characterization) - Global ... Microbial Identification Market is estimated at $896.5 ... reach $1,194.1 Million by 2019, growing at ...
(Date:7/28/2014)... 28, 2014 Appistry, Inc. , ... bring the power of genomics to next-generation medicine, announced ... Pipeline Challenge . , Two Appistry staff will ... National Center for Genome Resources, and Mr. Neil Miller, ... of Kansas City. Rounding out the panel are Appistry’s ...
Breaking Biology Technology:Building 'invisible' materials with light 2Regenerative Medicine Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2013 - 2019 2Regenerative Medicine Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2013 - 2019 3Regenerative Medicine Market: Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2013 - 2019 4Microbial Identification Market worth $1,194.1 Million by 2019 2Microbial Identification Market worth $1,194.1 Million by 2019 3Appistry Names Industry Experts from the National Center for Genome Resources and Mercy Children's, Kansas City, to Judge Pipeline Challenge Competition 2
... Professor James Dumesic, graduate students Steven T. Evans, Tobias ... Kim. Source: UW-Madison. MADISON - Carbon monoxide, or ... the efficient operation of fuel cells. But now, chemical ... not only cleared that barrier - they also have ...
... competitors can copy the newest product enhancement, advertising ... process seemingly overnight. Indeed, it seems that no ... realization has led many corporate leaders to conclude ... is to create organizations that can respond fast ...
... General Electric Company , announced Monday it has developed ... increase efficiency for physicians. , ,The new visual stethoscope, ... larger-scale systems but in a portable and wireless design ... possible for patients to receive diagnostic exams anywhere, including ...
Cached Biology Technology:UW engineers clear bottleneck in hydrogen production 2Going beyond me, too customer experiences 2Going beyond me, too customer experiences 3Going beyond me, too customer experiences 4GE Healthcare announces new, high-tech 'stethoscope' 2
... Adhesion Molecule The L1CAM ... involved in three distinct conditions: 1) HSAS ... MASA (mental retardation, aphasia, shuffling gait, adductus ... Immunogen: Homogenous suspension of ...
Immunogen: C terminus [VQLKRSKNDSKPYC] of cardiac elav-type RNA-binding protein (ETR-3) Storage: -20 C, Avoid Freeze/Thaw Cycles...
... PP2A1, purified Formulation: 50mM ... 0.02% Brij-35, 0.2mM PMSF, 1mM ... glycerol. Properites: PP2A1 (Protein Phosphatase ... DEAE-Sephadex, ammonium sulfate precipitation, QSepharose,amino-hexyl ...
Although each Beacon 2000 System includes one preinstalled sample chamber (size specified at time of order), optional chambers are available and easily retrofit by the user....
Biology Products: