HR: 16:05h
AN: B24C-01 INVITED    [Abstracts]
TI: Controls over vegetation water use in a small watershed at varying scales of time and space
AU: * Bond, B J
EM: barbara.bond@oregonstate.edu
AF: Department of Forest Science, Oregon State University, Corvallis, OR 97331, United States
AU: Kennedy, A
EM: adam.kennedy@oregonstate.edu
AF: Department of Forest Science, Oregon State University, Corvallis, OR 97331, United States
AU: Barnard, H
EM: holly.barnard@oregonstate.edu
AF: Department of Forest Science, Oregon State University, Corvallis, OR 97331, United States
AU: Pypker, T
EM: tgpypker@mtu.edu
AF: School of Forest Resources and Environmental Science, Michigan Technological Universtiy, Houghton, MI 49931, United States
AU: Czarnomski, N
EM: nicole.czarnomski@oregonstate.edu
AF: Department of Forest Science, Oregon State University, Corvallis, OR 97331, United States
AU: Conklin, D
EM: dave.conklin@oregonstate.edu
AF: Department of Forest Science, Oregon State University, Corvallis, OR 97331, United States
AB: As physiological ecologists worry about whether stomata respond to humidity or vapor pressure deficit, or differences between isohydric vs. anisohydric species, or the relative importance of chemical signaling from roots in controlling plant transpiration, scientists in related disciplines continue to use the Penman-Monteith equation to model evapotranspiration – typically with a static, species specific parameter for canopy conductance – and wonder what the fuss is all about. At what scales of time and space do the details matter? This presentation uses measurements of transpiration, soil moisture and meterological data from plots along a transect in a small watershed dominated by a single species, Douglas-fir to explore this question.
DE: 0476 Plant ecology (1851)
SC: Biogeosciences [B]
MN: 2007 Fall Meeting