New Scientist: Did humans decimate Easter Island on arrival?

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Forester
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New Scientist: Did humans decimate Easter Island on arrival?

Post by Forester »

An interesting new development:
The first humans may have arrived on Easter Island several centuries later than previously supposed, suggests a new study. If so, these Polynesian settlers must have begun destroying the island's forests almost immediately after their arrival.

Easter Island has often been cited as the classic example of a human-induced ecological catastrophe. The island – one of the most remote places on Earth – was once richly forested, but settlers cut the forests, partly to use the wood in construction of the massive stone statues and temples for which the island is famous. When Dutch sailors arrived in 1722, they found a starving population on a barren island.

Archaeologists had thought that humans first arrived at the island around 800 AD, based on radiocarbon dating of kitchen scraps and cooking fires. Since the first signs of severe deforestation do not appear until the 13th century, this suggests the Easter Islanders lived several centuries without serious impact on their environment.

Not so, says Terry Hunt, an archaeologist at the University of Hawaii at Manoa. Hunt and Carl Lipo of California State University at Long Beach, US, radiocarbon-dated charcoal from the earliest human traces in a new excavation on the island. The site, Anakena, is Easter Island's only sandy beach and has long been regarded as the likeliest spot for first colonists to settle. To their surprise, the wood dated no earlier than 1200 AD – several hundred years more recent than they had expected.
Get the rest of the article here: Chop chop

Andy
Frank Harrist

Post by Frank Harrist »

I'm more inclined to believe this part;

Broader context
Not everyone is convinced, however. A first arrival on Easter Island around 900 AD would fit well with Polynesians' first arrival on the nearest neighbouring islands of Mangareva, Henderson and Pitcairn, says Patrick Kirch, an archaeologist at the University of California at Berkeley, US.

"Kirch thinks Hunt and Lipo may have been too free in discarding studies for minor methodological problems, thus rejecting valid dates in this range. "For me, they don't make a convincing argument that we can eliminate the earlier dates, especially in light of the broader regional context," he says.

And their new excavation may have simply sampled a relatively young settlement while missing nearby, older sites. To resolve the issue, researchers will need to date charcoal from many more excavations to see what pattern emerges. "Then we may be able to say we have the answer," says Kirch."

Journal reference: Science (DOI: 10.1126/science.1121879
Minimalist
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Post by Minimalist »

If the original settlement group was small it could have taken a long time for the population to grow to the point where it would have a significant impact on the environment.


I am reminded of deforestation studies in Haiti and Bangla Desh as an example.
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Forester
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Post by Forester »

Here is another report on the original article:

LiveScience: View of Easter Island Disaster All Wrong, Researchers Say
Forester
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Location: Central Oklahoma (formerly Florida)

Post by Forester »

... and another report on the wider idea that eastern Polynesia may have been settled later than thought.

Researchers: east Polynesia settled later

I am just tossing these out for discussion; I know very little about Polynesian history. Other than owning an original first addition of Kon Tiki, that is! ;)

Andy
Rokcet Scientist

Post by Rokcet Scientist »

Forester wrote:... and another report on the wider idea that eastern Polynesia may have been settled later than thought.

Researchers: east Polynesia settled later

I am just tossing these out for discussion; I know very little about Polynesian history. Other than owning an original first addition of Kon Tiki, that is! ;)

Andy
That is very original indeed, Andy, as I can only boast of a first E-dition..., signed by Thor Heyerdahl, who actually told me the story, one looong evening in 1972.

There's "oral history" for you!
Frank Harrist

Post by Frank Harrist »

Rokcet Scientist wrote:
Forester wrote:... and another report on the wider idea that eastern Polynesia may have been settled later than thought.

Researchers: east Polynesia settled later

I am just tossing these out for discussion; I know very little about Polynesian history. Other than owning an original first addition of Kon Tiki, that is! ;)

Andy
That is very original indeed, Andy, as I can only boast of a first E-dition..., signed by Thor Heyerdahl, who actually told me the story, one looong evening in 1972.

There's "oral history" for you!
Well aren't you special. :wink:
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