Oral Session #45: Water Relations in Shrubs and Annuals.

Presiding: J.R. Cleverly, University of New Mexico.
Tuesday, August 8, 2000
8:00 AM to 11:45 AM
Alpine North - Sports Event Center

8:00 AM	Ecological optimality in semi-arid woodlands: Testing Eagleson's ecohydrological equilibrium. KERKHOFF, A.J. and S.N. MARTENS, B.T. MILNE
8:15 AM	Adaptations of desert plants to dynamic soil moisture conditions: An optimization result. SCHWINNING, S. and J.R. EHLERINGER
8:30 AM	Effects of added water on monoculture performance and competitive relations of Bromus tectorum and Stipa hymenoides in southeastern Utah. MILLER, M.E. and J. BELNAP, S.W. BEATTY
8:45 AM	Determinants of rooting depth in water-limited ecosystems of the temperate zone. SCHENK, H.J. and R.B. JACKSON
9:00 AM	Wood density and drought resistance of plant xylem. HACKE, U.G. and J.S. SPERRY, S.D. DAVIS, W.T. POCKMAN
9:15 AM	Physiological responses of the desert shrub Larrea tridentata to short-term variation in summer rainfall. OGLE, K. and R.J. FERNANDEZ, S.L. BAUER, J.F. REYNOLDS
9:30 AM	Water source use of a riparian tallgrass, big sacaton (Sporobolus wrightii), along a gradient of depth to groundwater and rainfall regime in southeastern Arizona USA. TILLER, R.L. and K.A. SNYDER, D.G. WILLIAMS, J.C. STROMBERG
9:45 AM	Disequilibrium between plant and soil water potential at predawn: The contribution of nighttime transpiration. LINTON, M.J. and L.A. DONOVAN
10:00 AM	Break
10:15 AM	Seasonal trends in predawn xylem water potential of two co-occurring species on the Southern Edwards Plateau. WAYNE, E.R. and O.W. VAN AUKEN
10:30 AM	Xylem cavitation thresholds and embolism repair in Hibiscus rosa assessed with independent techniques. MELCHER, P.J and F.C MEINZER, G. GOLDSTEIN
10:45 AM	Drought-induced xylem weakening and its repair in intact plants. STILLER, V. and J.S. SPERRY
11:00 AM	Historical versus hyrdologic controls on early successional dynamics in beaver meadows. WRIGHT, J.P and C.G JONES, A.S FLECKER
11:15 AM	The role of salt spray in maintaining coastal sandplain heathland plant communities. GRIFFITHS, M.E. and C.M. ORIANS
11:30 AM	Water-use patterns of the invasive exotic Schinus terebinthifolius contrasted with native plant species in Everglades National Park. EWE, S.M.L. and L.S.L. DA STERNBERG