HR: 0800h
AN: B51A-0925    [Abstracts]
TI: Impact of vegetation cover and stand age on scaling carbon fluxes in the upper Midwest: a multiple eddy flux site study
AU: Desai, A R
EM: adesai@psu.edu
AF: The Pennsylvania State University Dept. of Meteorology, 503 Walker Building, University Park, PA 16802 United States
AU: Normeets, A
EM: asko.normeets@utoledo.edu
AF: University of Toledo Dept. of Earth, Ecological and Environmental Sciences, 2801 W Bancroft St, Toledo, OH 43606 United States
AU: Bolstad, P V
EM: pbolstad@umn.edu
AF: University of Minnesota Dept. of Forest Resources, 115 Green Hall 1530 Cleveland Ave N, St. Paul, MN 55108 United States
AU: Chen, J
EM: jiquan.chen@utoledo.edu
AF: University of Toledo Dept. of Earth, Ecological and Environmental Sciences, 2801 W Bancroft St, Toledo, OH 43606 United States
AU: Cook, B D
EM: bcook@essc.psu.edu
AF: University of Minnesota Dept. of Forest Resources, 115 Green Hall 1530 Cleveland Ave N, St. Paul, MN 55108 United States
AU: Curtis, P S
EM: curtis.7@osu.edu
AF: The Ohio State University Dept. of Evolution, Ecology, and Organismal Biology, 1735 Neil Ave, Columbus, OH 43210 United States
AU: Davis, K J
EM: davis@met.psu.edu
AF: The Pennsylvania State University Dept. of Meteorology, 503 Walker Building, University Park, PA 16802 United States
AU: Euskirchen, E
EM: ffese@uaf.edu
AF: University of Alaska Fairbanks, P.O. Box 757500, Fairbanks, AK 99775
AU: Gough, C
EM: gough.21@osu.edu
AF: The Ohio State University Dept. of Evolution, Ecology, and Organismal Biology, 1735 Neil Ave, Columbus, OH 43210 United States
AU: Martin, J
EM: mart0166@umn.edu
AF: University of Minnesota Dept. of Forest Resources, 115 Green Hall 1530 Cleveland Ave N, St. Paul, MN 55108 United States
AU: Ricciuto, D M
EM: ricciuto@essc.psu.edu
AF: The Pennsylvania State University Dept. of Meteorology, 503 Walker Building, University Park, PA 16802 United States
AU: Schmid, H P
EM: hschmid@indiana.edu
AF: Indiana University Dept. of Geography, 120 Student Building, Bloomington, IN 47405 United States
AU: Tang, J
EM: jtang@umn.edu
AF: University of Minnesota Dept. of Forest Resources, 115 Green Hall 1530 Cleveland Ave N, St. Paul, MN 55108 United States
AU: Su, H
EM: suh@mail.ecu.edu
AF: East Carolina University Dept. of Geography, Brewster Hall, Greenville, SC 27858 United States
AU: Vogel, C
EM: csvogel@umich.edu
AF: University of Michigan Biological Station, 1800 Biological Road, Pellston, MI 49769 United States
AU: * Wang, W
EM: wang@essc.psu.edu
AF: The Pennsylvania State University Dept. of Meteorology, 503 Walker Building, University Park, PA 16802 United States
AB: Eight permanent and three roving eddy flux towers were used to observe the exchange of carbon dioxide between the ecosystem and atmosphere at fourteen different sites in northern Wisconsin and Michigan (USA) during the growing seasons (May-Sept) of 2002 and 2003. These towers were part of the Chequamegon Ecosystem-Atmosphere Study (ChEAS), the University of Michigan Biological Station (UMBS), and the Michigan Technical University. The sites spanned a range of vegetation types typical of the region (northern hardwood, hemlock-hardwood, mixed forest, red pine, jack pine, pine barrens and shrub wetland). The hardwood and red pine sites also spanned a range of forest stand age (young, intermediate, mature and old). All sites experienced roughly similar climate; thus, comparisons among the sites allow for an examination of the impact of heterogeneous vegetation cover and stand age across a regional landscape. Carbon fluxes at different sites generally reacted similarly in response to variability in climate. Results suggest that both cover type and stand age are important variables for modeling and predicting fluxes in this region. These results have implications for developing methods of scaling carbon dioxide fluxes from sites to regions. These results will be contrasted to a flux decomposition at the WLEF tall tower.
UR: http://cheas.psu.edu
DE: 0315 Biosphere/atmosphere interactions
DE: 0322 Constituent sources and sinks
SC: Biogeosciences [B]
MN: 2004 AGU Fall Meeting