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Title: Ancient Forests and the Tree-Ring Reconstruction of Past Climate (Ancient Forests and Dendroclimatology)

The original presettlement forests of North America have been dramatically altered, but thousands of unmolested ancient forests survive on remote or noncommercial terrain, including dry-site eastern hmore »ardwoods such as chestnut oak and post oak, the pinyon-juniper woodlands of the semiarid West, oak woodlands of California and in northeast Mexico, and the boreal forests of Canada and Alaska. Long tree-ring chronologies derived from these ancient forest remnants provide irreplaceable archives of environmental variability which are crucial for evaluating present and future change. Temperature sensitive tree -ring chronologies from cold treeline environments place 20th century warming into long historical perspective, and moisture sensitive tree-ring chronologies provide analogs to the decadal moisture regimes of the 20th century. These tree-ring data suggests that the 16th century megadrought was the most severe-sustained drought to impact North America in 1500 years, and had huge environmental and social impacts at the dawn of European settlement.« less
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Title: Ancient Forests and the Tree-Ring Reconstruction of Past Climate (Ancient Forests and Dendroclimatology)
Authors:
Publication Date: 2003-02-12
OSTI Identifier: 1015657
DOE Contract Number: AC02-07CH11359
Other Number(s): TRN: US201209%%76
Resource Type: Multimedia
Resource Relation: Conference: Fermilab Colloquia, Fermi National Accelerator Laboratory (FNAL), Batvia, Illinois (United States), presented on February 12, 2003
Research Org: FNAL (Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States))
Sponsoring Org: USDOE Office of Science (SC)
Subject: 54 ENVIRONMENTAL SCIENCES ; ALASKA ; CALIFORNIA ; CANADA ; CHESTNUTS ; CLIMATES ; DROUGHTS ; FORESTS ; MEXICO ; MOISTURE ; NORTH AMERICA ; OAKS ; SOCIAL IMPACT ; TREES
Country of Publication: United States
Language: English
Run Time: 1:08:29
System Entry Date: 2016-01-27