Poster # 76. Manter, Daniel^*,1, Kavanagh, Kathleen², ¹ USDA Forest Service, Corvallis, OR² University of Idaho, Moscow, ID Stomatal sensitivity in Douglas-fir following a fungal-mediated reduction in leaf area, maximum stomatal conductance, and hydraulic conductance.

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Poster # 77. AUGÉ, ROBERT^*,1, MOORE, JENNIFER¹, CHO, KEUN HO¹, ¹ University of Tennessee, Knoxville, TN Predicting mycorrhizal effects on stomatal conductance.

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Poster # 78. Preston, Katherine^*,1, Bhaskar, Radika¹, Schwilk, Dylan¹, Ackerly, David¹, ¹ Stanford University, Stanford, CA Xylem vulnerability and hydraulic conductivity are correlated with rooting depth in co-occurring chaparral shrubs.

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Poster # 79. Ryel, Ronald^*,1, Leffler, A. Joshua¹, Caldwell, Martyn¹, Yoder, Carolyn², ¹ Department of Rangeland Resources and Ecology Center, Logan, Utah² Department of Biological Sciences, Richmond, Kentucky Rapid soil moisture recharge to depth by roots.

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Poster # 80. Thorne, Eleanor^*,1, Jackson, Alison², Burbidge, Alan³, Thompson, Andrew², Taylor, Ian³, Sharp, Robert¹, ¹ University of Missouri-Columbia, Columbia, MO² Horticulture Research International, Wellesbourne, UK³ University of Nottingham, Sutton Bonington, UK What is the role of ABA accumulation in leaf growth under water deficits?

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Poster # 81. Grise, David^*,1, Kenney, Amanda¹, ¹ Southwest Texas State University, San Marcos, TX Using blue light to address possible benefits of nighttime water loss.

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Poster # 82. Wright, William^*,1, Leavitt, Steven¹, ¹ The University of Arizona, Tucson, Arizona Physiological timing and environmental signals derived from ¹⁸O variation in Pinus ponderosa needle subdivisions.

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Poster # 83. FORD, CHELCY^*,1,2, MITCHELL, ROBERT², TESKEY, ROBERT¹, ¹ University of Georgia, Athens, GA² Joseph W. Jones Ecological Research Center, Newton, GA Radial profiles of sap flux density in four southeastern pine species.

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Poster # 84. Leavitt, Steven^*,1, Wright, Wm.¹, Hemming, Debbie^1,2, Long, Austin¹, ¹ University of Arizona, Tucson, Arizona² Weizmann Institute of Science, Rehovot, Israel Micro-variation of ¹³C in tree rings of Ponderosa pine from aouthern Arizona.

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Poster # 85. McCulloh, Katherine^*,1, Sperry, John¹, ¹ Department of Biology, Salt Lake City, UT Testing Murray's law in shoots versus roots of conifers .

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Poster # 86. MOURA, CATARINA^*,1, MAHERALI, HAFIZ¹, ADDINGTON, ROBERT¹, O'MALLEY, DAVID², JACKSON, ROBERT¹, ¹ Duke University, Durham, NC² North Carolina State University, Raleigh, NC Hydraulic architecture and physiology of Loblolly Pine genotypes: Potential effects of abnormal lignin .

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Poster # 87. Martin, Allison^*,1, Jackson, Paula¹, Sutton, Heather¹, ¹ Kennesaw State University, Kennesaw, GA Source water use by Loblolly (Pinus taeda L.) and Virginia (Pinus virginiana Miller) pines.

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Poster # 88. Sonderegger, Derek^*,1, Taper, Mark¹, ¹ Montana State University, Bozeman, Montana Water transport, conduit size variation and cascading cavitation in Pinus albicaulis: Results from a model.

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Poster # 89. Maherali, Hafiz^*,1, Pockman, William², Jackson, Robert¹, ¹ Duke University, Durham, NC² University of New Mexico, Albuquerque, NM Adaptive variation in the vulnerability of woody plants to xylem cavitation.

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Poster # 90. POCKMAN, WILLIAM^*,1, MARTNEZ-VILALTA, JORDI², ¹ University of New Mexico, Albuquerque, NM² Universitat Autnoma de Barcelona, Barcelona The vulnerability to freezing-induced xylem cavitation of Larrea tridentata in the Chihuahuan desert.

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