Monday, August 3, 2009: 1:30 PM-5:00 PM
Galisteo, Albuquerque Convention Center
OOS 4 - Plant Regulation of Xylem Hydraulic Conductivity at Multiple Scales: Recent Advances, Future Directions and Ecological Implications
This session seeks to bring together leaders and emerging scientists in the field of plant hydraulics to synthesize advances and suggest new directions for research. Speakers will present the results of original research with a focus on the ecological implications of their work in plant regulation of xylem hydraulic conductivity. The session will address regulation of xylem hydraulic conductivity at the molecular level, cellular and tissue levels, whole plant coordination of water transport and comparisons across populations, species and environments.
Organizer:	Juliana S. Medeiros, University of New Mexico
Co-organizer:	William T. Pockman, University of New Mexico
Moderator:	Juliana S. Medeiros, University of New Mexico
1:30 PM	OOS 4-1		The variable importance of aquaporins in regulating hydraulic conductance Gretchen B. North, Occidental College
1:50 PM	OOS 4-2		The role of wood fibers in hydraulic systems of shrubs H. Jochen Schenk, California State University Fullerton, Alejandra N. Mendez, California State University Fullerton, Susana Espino, California State University Fullerton, Hugo Martinez-Cabrera, University of Connecticut, Cynthia S. Jones, University of Connecticut
2:10 PM	OOS 4-3		Xylem hydraulic safety margins in woody plants: Coordination of stomatal control of xylem tension with hydraulic capacitance Frederick C. Meinzer, USDA Forest Service, Daniel M. Johnson, USDA Forest Service, Barbara Lachenbruch, Oregon State University, Katherine McCulloh, Oregon State University, David R. Woodruff, USDA Forest Service
2:30 PM	OOS 4-4		Safety and efficiency trade-offs at inter- and intra-specific scales Katherine McCulloh, Oregon State University, Daniel M. Johnson, USDA Forest Service, Frederick C. Meinzer, USDA Forest Service, Barbara Lachenbruch, Oregon State University
2:50 PM	OOS 4-5		Macro and micro evolutionary perspectives on the co-ordination of leaf and xylem hydraulic properties Hafiz Maherali, University of Guelph
3:10 PM			Break
3:20 PM	OOS 4-6		Soil hydraulic properties and plant water relations: Controls over plant community structure and function in arid environments Kevin R. Hultine, University of Utah
3:40 PM	OOS 4-7		Hydraulic contributions to differential survival during drought Jennifer A. Plaut, University of New Mexico, Enrico A. Yepez, Instituto Tecnológico de Sonora, Judson Hill, University of New Mexico, Jennifer E. Johnson, University of New Mexico, Nate G. McDowell, Los Alamos National Laboratory, William T. Pockman, University of New Mexico
4:00 PM	OOS 4-8		Hydraulics are linked to life history type in chaparral species (Rhamnaceae) R. Brandon Pratt, California State University Bakersfield, Anna L. Jacobsen, California State University, Bakersfield, Gretchen B. North, Occidental College, Stephen D. Davis, Pepperdine University, Frank Ewers, California State Polytechnic University
4:20 PM	OOS 4-9		The importance of wood traits and hydraulic conductance for the performance and life history strategies of 42 rainforest tree species Lourens Poorter, Wageningen University, Imole McDonald, Wageningen University, Esther Fichtler, Institute of Agronomy in the Tropics, Juan Carlos Licona, Bolivian Forest Research Institute (IBIF), Marielos Peña-Claros, Bolivian Forest Research Institute (IBIF), Frank Sterck, Wageningen University, Ute Sass-Klaassen, Wageningen University
4:40 PM	OOS 4-10		An ecological and evolutionary analysis of xylem function and anatomy of aridland shrubs from southern California Anna L. Jacobsen, California State University, Bakersfield, Uwe G. Hacke, University of Alberta, R. Brandon Pratt, California State University Bakersfield

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