Robert Kar
Fri, Mar-21-08, 06:18
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Clovis-age overkill didn't take out California's
flightless sea duck
Clovis-age natives, often noted for overhunting during their
brief = dominance in a primitive North America, deserve
clemency in the case of = California's flightless sea duck.
New evidence says it took thousands of = years for the duck
to die out.
A team of six scientists, including Jon M. Erlandson of the
University = of Oregon, pronounced their verdict in the
Proceedings of the National = Academy of Sciences (online,
March 13) after holding court on thousands = of years of
archaeological testimony taken from bones of the extinct sea =
duck uncovered from 14 sites on islands off the California
Coast and 12 = mainland sites from southern California
northward.=20
Erlandson and his co-authors from California Polytechnic State
= University, the University of California, Los Angeles, the
California = Department of Parks and Recreation (CDPR) and the
California Department = of Forestry and Fire Protection (CAL
FIRE) demonstrated that humans = first hunted the flightless
sea duck (Chendytes lawi) more than 10,000 = years ago, but
the bird persisted until about 2,400 years ago. Their =
findings that Chendytes survived more than 7,500 years of
human = predation are based on the first radiocarbon dating of
Chendytes bones = from six coastal archaeological sites.=20
Erlandson and colleagues, along with UO alum Don Grayson, now
a = University of Washington archaeologist, suggest that the
drawn-out road = to the ducks' extinction raises serious
questions about the "Pleistocene = over-kill theory" that the
Paleoindian Clovis culture rapidly hunted = numerous large
mammals and other animals to extinction on their arrival = in
the Americas in the late Pleistocene.=20
The ducks' lifestyle served them well for millennia, the
researchers = noted. Many of the birds nested on the Channel
Islands off the = California Coast, where few predators
existed before humans arrived. = After seafaring Paleoindians
colonized the islands about 13,000 years = ago, however,
Chendytes may have been driven to smaller and more remote =
islands.=20
Human population growth, the development of increasingly
sophisticated = watercraft, and the introduction of dogs and
foxes to the islands = probably put greater pressure on the
birds. Eventually, the flightless = duck, like great auk in
the North Atlantic, had no place to run.=20
Source: University of Oregon
http://www.physorg.com/news124982549.html
--=20 Posted by Robert Karl Stonjek
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<DIV><TBODY><TR><B><FONT size=3D5>Clovis-age overkill didn't
take out = California's=20 flightless sea duck</FONT><-
/B></DIV><STRONG></STRONG></TD></TR><TR><TD>
<DV><BR><B>Clovis-age natives, often noted for overhunting
during their = brief=20 dominance in a primitive North
America, deserve clemency in the case of=20
California's flightless sea duck. New evidence says it
took thousands of = years=20 for the duck to die
out.</B></DIV><STRONG></STRONG></TD></TR><TR><TD>
<DVI><BR>A team of six scientists, including Jon M.
Erlandson of the = University=20 of Oregon, pronounced
their verdict in the <I>Proceedings of the =
National=20 Academy of Sciences</I> (online, March 13)
after holding court on = thousands of=20 years of
archaeological testimony taken from bones of the
extinct sea = duck=20 uncovered from 14 sites on
islands off the California Coast and 12 = mainland=20
sites from southern California northward.
<BR><BR>Erlandson and his = co-authors=20 from
California Polytechnic State University, the University
of = California, Los=20 Angeles, the California
Department of Parks and Recreation (CDPR) and = the=20
California Department of Forestry and Fire Protection
(CAL FIRE) = demonstrated=20 that humans first hunted
the flightless sea duck (Chendytes lawi) more = than=20
10,000 years ago, but the bird persisted until about
2,400 years ago. = Their=20 findings that Chendytes
survived more than 7,500 years of human = predation
are=20 based on the first radiocarbon dating of
Chendytes bones from six = coastal=20 archaeological
sites. <BR><BR>Erlandson and colleagues, along with UO
= alum Don=20 Grayson, now a University of Washington
archaeologist, suggest that the=20 drawn-out road to
the ducks' extinction raises serious questions about =
the=20 "Pleistocene over-kill theory" that the
Paleoindian Clovis culture = rapidly=20 hunted numerous
large mammals and other animals to extinction on their
= arrival=20 in the Americas in the late Pleistocene.
<BR><BR>The ducks' lifestyle = served=20 them well for
millennia, the researchers noted. Many of the birds
nested = on the=20 Channel Islands off the California
Coast, where few predators existed = before=20 humans
arrived. After seafaring Paleoindians colonized the
islands about = 13,000=20 years ago, however, Chendytes
may have been driven to smaller and more = remote=20
islands. <BR><BR>Human population growth, the
development of = increasingly=20 sophisticated
watercraft, and the introduction of dogs and foxes to
the = islands=20 probably put greater pressure on the
birds. Eventually, the flightless = duck,=20 like great
auk in the North Atlantic, had no place to run. =
<BR><BR>Source:=20 University of Oregon</DIV>
<DVII><A=20 href=3D"http://www.physorg.com/news124982549.htm-
l">http://www.physorg.com=
/news124982549.html</A></DIV>
<DVIII> </DIV>
<DIX><BR>-- <BR>Posted by<BR>Robert Karl=20
Stonjek</TD></TR></TBODY></TABLE></DIV></BODY></HTML>
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quoted-printable
Clovis-age overkill didn't take out California's
flightless sea duck
Clovis-age natives, often noted for overhunting during their
brief = dominance in a primitive North America, deserve
clemency in the case of = California's flightless sea duck.
New evidence says it took thousands of = years for the duck
to die out.
A team of six scientists, including Jon M. Erlandson of the
University = of Oregon, pronounced their verdict in the
Proceedings of the National = Academy of Sciences (online,
March 13) after holding court on thousands = of years of
archaeological testimony taken from bones of the extinct sea =
duck uncovered from 14 sites on islands off the California
Coast and 12 = mainland sites from southern California
northward.=20
Erlandson and his co-authors from California Polytechnic State
= University, the University of California, Los Angeles, the
California = Department of Parks and Recreation (CDPR) and the
California Department = of Forestry and Fire Protection (CAL
FIRE) demonstrated that humans = first hunted the flightless
sea duck (Chendytes lawi) more than 10,000 = years ago, but
the bird persisted until about 2,400 years ago. Their =
findings that Chendytes survived more than 7,500 years of
human = predation are based on the first radiocarbon dating of
Chendytes bones = from six coastal archaeological sites.=20
Erlandson and colleagues, along with UO alum Don Grayson, now
a = University of Washington archaeologist, suggest that the
drawn-out road = to the ducks' extinction raises serious
questions about the "Pleistocene = over-kill theory" that the
Paleoindian Clovis culture rapidly hunted = numerous large
mammals and other animals to extinction on their arrival = in
the Americas in the late Pleistocene.=20
The ducks' lifestyle served them well for millennia, the
researchers = noted. Many of the birds nested on the Channel
Islands off the = California Coast, where few predators
existed before humans arrived. = After seafaring Paleoindians
colonized the islands about 13,000 years = ago, however,
Chendytes may have been driven to smaller and more remote =
islands.=20
Human population growth, the development of increasingly
sophisticated = watercraft, and the introduction of dogs and
foxes to the islands = probably put greater pressure on the
birds. Eventually, the flightless = duck, like great auk in
the North Atlantic, had no place to run.=20
Source: University of Oregon
http://www.physorg.com/news124982549.html
--=20 Posted by Robert Karl Stonjek
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD> <META http-equiv=3DContent-Type
content=3D"text/html; = charset=3Diso-8859-1"> <META
content=3D"MSHTML 6.00.3790.1218" name=3DGENERATOR>
<STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff>
<DIV><TBODY><TR><B><FONT size=3D5>Clovis-age overkill didn't
take out = California's=20 flightless sea duck</FONT><-
/B></DIV><STRONG></STRONG></TD></TR><TR><TD>
<DV><BR><B>Clovis-age natives, often noted for overhunting
during their = brief=20 dominance in a primitive North
America, deserve clemency in the case of=20
California's flightless sea duck. New evidence says it
took thousands of = years=20 for the duck to die
out.</B></DIV><STRONG></STRONG></TD></TR><TR><TD>
<DVI><BR>A team of six scientists, including Jon M.
Erlandson of the = University=20 of Oregon, pronounced
their verdict in the <I>Proceedings of the =
National=20 Academy of Sciences</I> (online, March 13)
after holding court on = thousands of=20 years of
archaeological testimony taken from bones of the
extinct sea = duck=20 uncovered from 14 sites on
islands off the California Coast and 12 = mainland=20
sites from southern California northward.
<BR><BR>Erlandson and his = co-authors=20 from
California Polytechnic State University, the University
of = California, Los=20 Angeles, the California
Department of Parks and Recreation (CDPR) and = the=20
California Department of Forestry and Fire Protection
(CAL FIRE) = demonstrated=20 that humans first hunted
the flightless sea duck (Chendytes lawi) more = than=20
10,000 years ago, but the bird persisted until about
2,400 years ago. = Their=20 findings that Chendytes
survived more than 7,500 years of human = predation
are=20 based on the first radiocarbon dating of
Chendytes bones from six = coastal=20 archaeological
sites. <BR><BR>Erlandson and colleagues, along with UO
= alum Don=20 Grayson, now a University of Washington
archaeologist, suggest that the=20 drawn-out road to
the ducks' extinction raises serious questions about =
the=20 "Pleistocene over-kill theory" that the
Paleoindian Clovis culture = rapidly=20 hunted numerous
large mammals and other animals to extinction on their
= arrival=20 in the Americas in the late Pleistocene.
<BR><BR>The ducks' lifestyle = served=20 them well for
millennia, the researchers noted. Many of the birds
nested = on the=20 Channel Islands off the California
Coast, where few predators existed = before=20 humans
arrived. After seafaring Paleoindians colonized the
islands about = 13,000=20 years ago, however, Chendytes
may have been driven to smaller and more = remote=20
islands. <BR><BR>Human population growth, the
development of = increasingly=20 sophisticated
watercraft, and the introduction of dogs and foxes to
the = islands=20 probably put greater pressure on the
birds. Eventually, the flightless = duck,=20 like great
auk in the North Atlantic, had no place to run. =
<BR><BR>Source:=20 University of Oregon</DIV>
<DVII><A=20 href=3D"http://www.physorg.com/news124982549.htm-
l">http://www.physorg.com=
/news124982549.html</A></DIV>
<DVIII> </DIV>
<DIX><BR>-- <BR>Posted by<BR>Robert Karl=20
Stonjek</TD></TR></TBODY></TABLE></DIV></BODY></HTML>
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