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Researchers uncover earliest tobacco use in the Pacific Northwest

UC Davis researchers uncover earliest tobacco use in the Pacific Northwest
The earliest known usage of tobacco in the Pacific Northwest was smoked using a pipe similar to this one, according to Shannon Tushingham, a UC Davis archaeology research associate. Credit: Shannon Tushingham

(Phys.org)—Native American hunter-gatherers living more than a thousand years ago in what is now northwestern California ate salmon, acorns and other foods, and now we know they also smoked tobacco—the earliest known usage in the Pacific Northwest, according to a new University of California, Davis, study.

"The study demonstrates that was part of the northwestern California culture very early ... shortly after the earliest documented Pacific Northwest Coast plank house villages," said the study, published in the .

Testing organic residues extracted from pipes, researchers from the UC Davis Department of Anthropology and the Fiehn Metabolomics Laboratory of the UC Davis Genome Center confirmed was smoked, and likely grown in the region, by at least A.D. 860.

Perhaps more importantly, the researchers say that additional studies may help them better understand the origins of and the human management, geographic range extension and cultivation of tobacco. Indeed, as part of a second study, the authors have recently detected nicotine in ancient pipes from an 800-year-old site in the modern city of Pleasanton, Calif.

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Prior to this recent testing, which used sensitive gas chromatography/mass spectrometry, researchers were unsure of the historical use of tobacco on the Coast. It was unclear, for example, whether European traders had brought tobacco to the area much later, or if some other plant had been smoked in the pipes, Tushingham said.

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扎克伯格还协助成立了一个名为FWD.us的游说团体,旨在推动美国的移民和教育改革。
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继8月中旬贬值后,人民币在9月和10月有所上涨,但在11月再度走低,昨日人民币汇率收跌至三个月最疲弱水平,为1美元兑6.4082元人民币。“中国周边很多国家自10月份起经历了一些资本外流,中国也未能幸免,”深圳招商证券(China Merchants Securities)经济学家谢亚轩表示。“美元走强势必在一定程度上引发转投美元资产的行为。”

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Effective bosses and managers tend to:
China will remain an important engine for world growth amid sluggish global economic recovery.
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The study is available online.


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男性使用这个密码的几率是女性的2.8倍。

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Citation: Researchers uncover earliest tobacco use in the Pacific Northwest (2013, March 1) retrieved 18 November 2020 from https://phys.org/news/2013-03-uncover-earliest-tobacco-pacific-northwest.html
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