Navigation Links
Indigenous societies' 'first contact' typically brings collapse, but rebounds are possible
Date:4/3/2014

It was disastrous when Europeans first arrived in what would become Brazil -- 95 percent of its population, the majority of its tribes, and essentially all of its urban and agricultural infrastructure vanished. The experiences of Brazil's indigenous societies mirror those of other indigenous peoples following "first contact."

A new study of Brazil's indigenous societies led by Santa Fe Institute researcher Marcus Hamilton paints a grim picture of their experiences, but also offers a glimmer of hope to those seeking ways to preserve indigenous societies.

Even among the indigenous societies contacted in just the last 50 years, says Hamilton, "all of them went through a collapse, and for the majority of them it was disastrous," with disease and violence responsible in most cases, and with lasting detrimental effects. "That's going on today -- right now."

Brazil is "a tragic natural experiment," Hamilton says: several hundred native tribes contacted by outsiders remain, according to Instituto Socioambiental, a non-governmental organization that reports census data on 238 of those societies going back a half-century or more. That volume of data makes possible a detailed analysis of the health and prospects of the surviving contacted -- and uncontacted -- societies, an analysis that wouldn't be possible any where else in the world.

Using a method called population viability analysis, the researchers found that contact by outsiders is typically catastrophic, yet survivable. While first contacts in Brazil led to population declines of 43 percent on average, that decline bottomed out an average of eight or nine years after contact, following which population numbers grew as much as four percent a year -- about as much as possible. Projecting those results into the future suggests that contacted and as-yet uncontacted populations could recover from a low of just 100 individuals.

Hamilton and co-authors Robert Walker and Dylan
'/>"/>

Contact: Marcus Hamilton
marcusj@santafe.edu
Santa Fe Institute
Source:Eurekalert

Page: 1 2

Related biology news :

1. Plant breeding academy opens to boost Africas food supply with improved indigenous crops
2. Environment change threatens indigenous know-how
3. Mites form friendly societies
4. World Food Prize winner among speakers at agronomy, crop and soil science societies meetings
5. Physiological societies partner with Wiley on new open access journal
6. Medical societies unite on patient-centered measures for nonsurgical stroke interventions
7. Medical societies to launch large-scale study on vein filter use
8. IOF Worldwide Conference of Osteoporosis Patient Societies opens in Helsinki
9. AMP joins the Federation of American Societies for Experimental Biology
10. Scientific societies face modern challenges
11. Common bias known as the endowment effect not present in hunter-gatherer societies
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/24/2014)... animal species for food or commercial food sale, has ... the decline of many species of primates and other ... than half of the species being consumed are birds, ... not only the meat made available for sale but ... by hunters and brought to villages for consumption, we ...
(Date:7/24/2014)... Imagine a smog-free Los Angeles, where electric cars ply ... run on heat from beneath the earth, from howling ... new Stanford study finds that it is technically and ... one powered by clean, renewable energy. Published in ... sustainable, inexpensive and reliable energy supply in California that ...
(Date:7/24/2014)... team of researchers has developed a new nanoscale agent ... method for assessing the function and properties of the ... diagnosis and treatment of gut diseases. , ... syndrome and inflammatory bowel disease all occur in the ... patients with diseases such as diabetes and Parkinson,s. ...
Breaking Biology News(10 mins):Stanford study shows how to power California with wind, water and sun 2Stanford study shows how to power California with wind, water and sun 3Stanford study shows how to power California with wind, water and sun 4New imaging agent provides better picture of the gut 2
... Advanced Computing Center (TACC) at the University of Texas ... support a world-class supercomputer with comprehensive computing and visualization ... possible by a $27.5 million grant from the National ... the NSF "eXtreme Digital" (XD) program, an integrating system ...
... immobilize and devour amphibian prey many times their size. Now ... of Zoology, has discovered that they have an additional advantage ... adult counterparts, have a unique method for luring and feeding ... sirens who lured Ulysses, sailors to their demise, larvae have ...
... genetic variant may explain why some people with asthma do ... medicine for long-term asthma control. Researchers found that asthma patients ... only one-third as well to steroid inhalers as those with ... association study, funded by the National Heart, Lung, and Blood ...
Cached Biology News:Stampede charges computational science forward in tackling complex societal challenges 2Stampede charges computational science forward in tackling complex societal challenges 3Stampede charges computational science forward in tackling complex societal challenges 4Amphibians: Beware young beetles' deadly 'siren call' 2NIH-funded study connects gene variant to response to asthma drugs 2
(Date:7/24/2014)... forces worldwide rely on sophisticated equipment, trained personnel, ... public areas against terrorist attacks. A revolutionary new ... to make their job much easier. , The ... of Tel Aviv University ,s School of Chemistry ... by the Herzliya company Tracense, picks up the ...
(Date:7/24/2014)... to settle into equilibriuma state of unchanging balance ... of non-equilibrium conditions where new possibilities lie. Non-equilibrium ... such as temperature fluctuations, freezing and melting, or ... body temperature, airplanes to fly, and the Earth ... even though these conditions exist naturally and are ...
(Date:7/24/2014)... , July 24, 2014 SRI International has ... the National Institute of Allergy and Infectious Diseases (NIAID), ... preclinical development of potential therapies for HIV infection and ... treat HIV and AIDS and the complications and opportunistic ... for preventing sexual transmission of HIV. ...
(Date:7/24/2014)... 24, 2014  Neogen Corporation (Nasdaq: NEOG ... its potential revenue from new rodenticide research are premature. ... analysts on July 22, 2014, Neogen,s CEO commented about ... research. "It was my intent Tuesday at ... of a new type of rodenticide, but certainly not ...
Breaking Biology Technology:Nano-sized chip 'sniffs out' explosives far better than trained dogs 2New approach to form non-equilibrium structures 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 3Neogen comments on SenesTech 2
... 2009 ... ... 2009 -- IntertechPira has teamed up with Carbonfund.org to create a zero-carbon event. ... those emissions to make the event carbon neutral by supporting energy efficiency, renewable energy ...
... , , SAN DIEGO, CA, July 30, ... second quarter 2009 financial results on Tuesday, August 4, 2009 before the ... conference call with a live Internet broadcast that will provide a corporate ... day at 11:00 a.m. Eastern Time (8:00 a.m. Pacific Time). , ...
... , , ALPHARETTA, Ga., ... recently announced the appointment of Philip Vogt as Executive Vice ... brings more than thirty years of pharmaceutical experience and ... Prior to this role, Vogt served as President of Ethex ...
Cached Biology Technology:Biopolymers Symposium 2009 Teams with Carbonfund.org to Create a Zero-Carbon Event 2SENOMYX, INC. SECOND QUARTER 2009 EARNINGS CONFERENCE CALL SCHEDULED FOR AUGUST 4, 2009 2
... loxP-PGK-gb2-neo-loxP template is designed to allow ... cells. The loxP-PGK-gb2-neo-loxP template encodes ... a prokaryotic promoter (gb2) for expression ... a eukaryotic promoter (PGK) for expression ...
... depletion cocktail is tailored to ... from suspensions of rat spleen ... the StemSep (or compatible 0.5 ... system. The CD4+ T cell ...
Standard Fluka For microscopy (Hist.) redox indicator...
... The VSOS-4 Orbital Shaker is designed ... to provide a uniform motion that is both ... The VSOS-4 Orbital Shaker provides a smooth, quiet, ... for a wide range of laboratory applications such ...
Biology Products: