HR: 1330h
AN: B52A-1033    [PDF]
TI: Strategies of Plant Water Use under Stochastic Hydrologic Conditions
AU: * Vico, G
EM: giu.vic@ciaoweb.it
AF: Dept. of Civil and Environmental Engineering, Duke University, Hudson Hall, Durham, NC 27708 United States
AU: Albertson, J
EM: john.albertson@duke.edu
AF: Dept. of Civil and Environmental Engineering, Duke University, Hudson Hall, Durham, NC 27708 United States
AU: Katul, G
EM: gaby@duke.edu
AF: Nicholas School of the Environment and Earth Sciences, Duke University, Durham, NC 27708 United States
AU: Porporato, A
EM: amilcare.porporato@polito.it
AF: Dept. of Civil and Environmental Engineering, Duke University, Hudson Hall, Durham, NC 27708 United States
AU: Ridolfi, L
EM: luca.ridolfi@polito.it
AF: Dip. Idraulica, Politecnico di Torino, Corso Duca degli Abruzzi, 24, Turin, 10129 Italy
AU: Rodriguez-Iturbe, I
EM: irodrigu@princeton.edu
AF: Dept. of Civil and Environmental Engineering, Princeton University, Olden Street, Princeton, NJ 08540 United States
AB: Recent papers on ecohydrology have discussed how a "tragedy of the commons" effect, in which the competitive evolutionary outcome is lower than the ecosystem optimum (e.g. maximum productivity), may arise in plants because of a trade-off between resource-uptake rate and resource efficiency. Using simple deterministic and stochastic models of soil water balance and ecosystem response to water stress, we investigate how efficient water-use strategies can evolve and persist against more aggressive but less efficient strategies of water use. Survival of plants and coexistence of different species is discussed in relation to their drought tolerance and water use efficiency, under conditions of temporal and spatial environmental variability
DE: 0400 Biogeosciences
DE: 1809 Desertification
DE: 1851 Plant ecology
DE: 1866 Soil moisture
SC: Biogeosciences [B]
MN: 2003 Fall Meeting