P.I.(s): Michael G. Ryan -- United States Department of Agriculture (USDA)
Collaborator(s): Michael Lavigne -- Forestry Canada
Objectives: Because respiration increases exponentially with temperature, and because warming is expected to be the greatest at high latitudes, autotrophic respiration strongly affects dry-matter production and carbon storage in boreal forests. The research will:
Objectives:
Types of Data Collected:
Summary of Places and Times of Measurements:
Stem, foliage, and fine root respiration were collected at OBS, OA, OJP, YJP in NSA and OBS, OA, OJP, YJP, YA in SSA each IFC and also after IFC-3. Stem respiration was also collected at OBS, OA, OJP, YJP in NSA approximately every two weeks from 6/1 - 9/30. Stem respiration was also collected continuously at SSA-OBS between IFC-2 and IFC-3. Branch and coarse root respiration were measured only at NSA and only during IFC-3. Foliage respiration and foliage expansion was measured every 5-14 days from 5/28- 9/16 (depending on expansion rates) near NSA-Fen on aspen, black spruce, jack pine, alder, and birch.
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Last Updated: October 29, 1997