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Response of Tundra Ecosystems to Altered Snow Regimes, Toolik Lake, Alaska, and Niwot Ridge, Colorado
Entry ID: GGD245

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Abstract: This study investigated the effects of field manipulations of winter precipitation and summer temperature on species performance, community structure, and ecosystem C and N dynamics. Parameters include ground temperatures at the surface and 15 cm along a gradient of snow depths, snow depth, soil temperatures at 10 cm intervals at several sites in drifts and unimpacted vegetation sites, and active layer thickness. Temperature profiles were monitored continuously. Snow depths were monitored in a grid behind snow fences and in a 1 x 1 km grid surrounding the fence sites. Active layer was monitored at the end of the season. These data are part of the International Tundra Experiment (ITEX) network.
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Geographic Coverage
Spatial coordinates   
  N: 68.0   S: 40.0   E: -105.0   W: -148.0

Data Set Citation
Dataset Originator/Creator: Donald (Skip) Walker, Marilyn Walker, Jeff Welker, Tim Seastedt, and Bill Krantz
Dataset Title: Response of Tundra Ecosystems to Altered Snow Regimes, Toolik Lake, Alaska, and Niwot Ridge, Colorado
Dataset Series Name: GGD245
Dataset Release Date: 2003-06-17
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Version: 1
Online Resource:
Data Center
Frozen Ground Data Center Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Phone: 907-474-2424
Fax: 907-474-6251
Email: ffmdw at
Contact Address:
University of Alaska Fairbanks
Boreal Ecology Cooperative Research Unit
School of Agriculture and Land Resources Management
P.O. Box 756780
City: Fairbanks
Province or State: AK
Postal Code: 99775-7000
Country: USA
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Creation and Review Dates
DIF Creation Date: 2003-06-17
Last DIF Revision Date: 2016-01-27

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