(Table 1) Climate characteristics of the four North American Tundra Experiment (ITEX) sites ...

Climate warming is expected to differentially affect CO2 exchange of the diverse ecosystems in the Arctic. Quantifying responses of CO2 exchange to warming in these ecosystems will require coordinated experimentation using standard temperature manipulations and measurements. Here, we used the Intern...

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Bibliographic Details
Main Authors: Oberbauer, Steven F, Tweedie, Craig E, Welker, Jeff M, Fahnestock, Jace T, Henry, Gregory HR, Webber, Patrick J, Hollister, Robert D, Walker, Marilyn D, Kuchy, Andrea, Elmore, Elizabeth, Starr, Gregory
Format: Dataset
Language:English
Published: PANGAEA 2007
Subjects:
Event label
Latitude of event
Longitude of event
Area/locality
ELEVATION
Temperature, air, annual mean
Temperature, air, monthly mean
Precipitation, sum
Comment
Degree days, thawing
Monitoring station
International Polar Year 2007-2008 IPY
Alexandra Fiord
Arctic
Canada
International Polar Year
IPY
Tundra
Online Access:https://dx.doi.org/10.1594/pangaea.817624
https://doi.pangaea.de/10.1594/PANGAEA.817624
Description
Summary:Climate warming is expected to differentially affect CO2 exchange of the diverse ecosystems in the Arctic. Quantifying responses of CO2 exchange to warming in these ecosystems will require coordinated experimentation using standard temperature manipulations and measurements. Here, we used the International Tundra Experiment (ITEX) standard warming treatment to determine CO2 flux responses to growing-season warming for ecosystems spanning natural temperature and moisture ranges across the Arctic biome. We used the four North American Arctic ITEX sites (Toolik Lake, Atqasuk, and Barrow [USA] and Alexandra Fiord [Canada]) that span 10° of latitude. At each site, we investigated the CO2 responses to warming in both dry and wet or moist ecosystems. Net ecosystem CO2 exchange (NEE), ecosystem respiration (ER), and gross ecosystem photosynthesis (GEP) were assessed using chamber techniques conducted over 24-h periods sampled regularly throughout the summers of two years at all sites.At Toolik Lake, warming ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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