(peer reviewed)

Marias, DE, FC Meinzer, DR Woodruff, KA McCulloh. 2017. Thermotolerance and heat stress responses of Douglas-fir and ponderosa pine seedling populations from contrasting climates. Tree Physiology. 37: 301-315.

Domec, JC, DD Smith, KA McCulloh. 2017. Atmospheric carbon dioxide enrichment effects on plant hydraulics: Implications for plant water use efficiency and resistance to drought. Plant, Cell & Environment. 40:921-937.

Meinzer, FC, DR Woodruff, D Marias, D Smith, KA McCulloh, A Howard. 2016. Mapping “hydroscapes” along the iso- to anisohydric continuum of stomatal regulation of plant water status. Ecology Letters. 19:1343-1352

Johnson, DM, R Wortemann, KA McCulloh, L Jordan-Meille, E Ward, JM Warren, S Palmroth, and J-C Domec. 2016. A test of the hydraulic vulnerability segmentation hypothesis in angiosperm and conifer tree species. Tree Physiology. 36:983-993.

McCulloh, K, J Petitmermet, A Stefanski, K Rice, R Montgomery, R Roy, and P Reich. 2016. Is it getting hot in here? Hydraulic responses of six species to five years of warming. Global Change Biology. 22:4124-4133.

Chmura, DJ, M Guzicka, KA McCulloh, and R Zytkowiak. 2016. Limited variation found among Norway spruce half-sib families in physiological response to drought and resistance to embolism. Tree Physiology. 36:252-266.

Gleason, SM, Westoby, M, Jansen, S, Choat, B, Hacke, U, Pratt, RB, Bhaskar, R, Brodribb, TJ, Bucci, SJ, Cao, K-F, Cochard, H, Delzon, S, Domec, J-C, Fan, Z-X, Feild, TS, Jacobsen, AL, Johnson, DM, Lens, F, Maherali, H, Martínez-Vilalta, J, Mayr, S, McCulloh, KA, Mencuccini, M, Mitchell, P, Morris, H, Nardini, A, Pittermann, J, Plavcová, L, Schreiber, SG, Sperry, JS, Wright, IJ, Zanne, AE. Weak tradeoff between xylem safety and xylem-specific hydraulic efficiency across the world’s woody plant species. 2016. New Phytologist. 209:123-136.

Gaines, KP, JK Wubbels, FC Meinzer, KA McCulloh, DR Woodruff, W Chen, TS Adams, H Lin, and DM Eissenstat. 2016. Reliance on shallow soil water in a mixed-hardwood forest in central Pennsylvania. Tree Physiology. 36:444-458.

Kerr, K, FC Meinzer, KA McCulloh, DR Woodruff, and D Marias. 2015. Expression of functional traits during seedling establishment in two populations of Pinus ponderosa from contrasting climates. Tree Physiology. 35:535-548.

McCulloh, KA, DM Johnson, J Petitmermet, B McNellis, FC Meinzer, and B Lachenbruch. 2015. A comparison of the hydraulic architecture of co-occurring trees and shrubs. Tree Physiology. 35: 723-731.

McCulloh, KA, and FC Meinzer. 2015. Further evidence that some plants can lose and regain hydraulic function daily. Tree Physiology. 35: 691-693.

Falster, DS et al. 2015. BAAD: a biomass and allometry database for woody plants. Ecology. 96:1445.

Lachenbruch, B, and KA McCulloh. 2014. Traits, properties, and performance: how woody plants combine hydraulic and mechanical functions in a cell, tissue, or whole plant. New Phytologist. Tansley Review. 204: 747-764

Meinzer, F. C., Woodruff, D. R., Marias, D. E., McCulloh, K. A. and Sevanto, S. 2014. Dynamics of leaf water relations components in co-occurring iso- and anisohydric conifer species. Plant, Cell & Environment. doi: 10.1111/pce.12327

Cover of Plant, Cell & Environment

McCulloh, KA, DM Johnson, FC Meinzer, and DR Woodruff. 2014. The dynamic pipeline: Hydraulic capacitance and xylem hydraulic safety in four tall conifer species. Plant, Cell & Environment. 37: 1171-1183. doi: 10.1111/pce.12225

Zimmer, K, A Treu, and KA McCulloh. 2014. Anatomical differences in the structural elements of fluid passage of Scots pine sapwood with contrasting treatability. Wood Science and Technology. 48: 435-447.

Smith, D, JS Sperry, BJ Enquist, V Savage, KA McCulloh and LP Bentley. 2014. Deviation from symmetrically self-similar branching in trees predicts altered hydraulics, mechanics, light interception and metabolic scaling. New Phytologist. 201: 217-229.

Meinzer, FC, J-C Domec, DM Johnson, KA McCulloh, and DR Woodruff. 2013. The dynamic pipeline: homeostatic mechanisms that maintain the integrity of xylem water transport from roots to leaves. Acta Horticulturae. 991: 1235-131.

Meinzer, FC, DR Woodruff, DM Eissenstat, HS Lin, TS Adams, KA McCulloh. 2013. Above- and belowground controls on water use by trees of different wood types in an eastern United States deciduous forest. Tree Physiology. 33: 345-356.

Johnson, DM, J-C Domec, DR Woodruff, KA McCulloh, FC Meinzer. 2013. Contrasting hydraulic strategies in two tropical lianas and their host trees. American Journal of Botany. 100(2):1-10.

Renninger, HJ, KA McCulloh, N Phillips. 2013. A comparison of the hydraulic efficiency of a palm species Iriartea deltoidea with other wood types. Tree Physiology. 33:152-160.

Barnard, D, B Lachenbruch, KA McCulloh, P Kitin, and FC Meinzer. 2013. Do ray cells provide a pathway for radial water movement in the stems of conifer trees? American Journal of Botany. 100: 322-331.

Price, CA, JS Weitz, V Savage, J Stegen, A Clarke, DA Coomes, PS Dodds, R Etienne, AJ Kerkhoff, KA McCulloh, KJ Niklas, H Olff, NG Swenson. 2012. Testing the metabolic theory of ecology. Ecology Letters.15:1465-1474

Johnson, DM, KM McCulloh, DR Woodruff, and FC Meinzer. 2012. Hydraulic safety margins and embolism reversal in stems and leaves: why are conifers and angiosperms so different? Invited review for Plant Science. 195: 48-53

Crivellaro, A, KA McCulloh, A Jones, and B Lachenbruch. 2012. Anatomy and mechanical and hydraulic needs of woody climbers contrasted with subshrubs on the island of Cyprus. IAWA Journal. 33:355-373

Sperry, JS, DD Smith, VM Savage, BJ Enquist, KA McCulloh, PB Reich, LP Bentley, E von Allmen. 2012. A species-level model for metabolic scaling in trees I. Exploring boundaries to scaling space within and across species. Functional Ecology. 26: 1054-1065

McCulloh, K, DM Johnson, FC Meinzer, SL Voelker, B Lachenbruch, and J-C Domec. 2012. Hydraulic architecture of two species differing in wood density: opposing strategies in co-occurring tropical pioneer species. Plant, Cell and Environment. 35:116-125. doi: 10.1111/j.1365-3040.2011.02421.x

Johnson, DM, K McCulloh, FC Meinzer, and DR Woodruff. 2012. Evidence for xylem embolism as a primary factor in dehydration-induced declines in leaf hydraulic conductance. Plant, Cell and Environment. 35: 760-769. doi: 10.1111/j.1365-3040.2011.02449.x

Johnson, DM, K McCulloh, FC Meinzer, DR Woodruff, and DM Eissenstat. 2011. Hydraulic patterns and safety margins, from stem to stomata, in three US tree species. Tree Physiology. 31: 659-668.

McCulloh, K, F Meinzer, J Sperry, B Lachenbruch, SL Voelker, DR Woodruff, and J-C Domec. 2011. Comparative hydraulic architecture of tropical tree species representing a range of successional stages and wood density. Oecologia. 167: 27-37. DOI 10.1007/s00442-011-1973-5

McCulloh, K, DM Johnson, FC Meinzer, and B Lachenbruch. 2011. An annual pattern of native embolism in upper branches of four tall conifer species. American Journal of Botany. 98(6): 1007-1015.

Barnard, D, Meinzer, FC, Lachenbruch, B, McCulloh, KA, Johnson, DM, and Woodruff, DR. 2011. Climate-related trends in sapwood biophysical properties in two conifers: avoidance of hydraulic dysfunction through coordinated adjustments in xylem efficiency, safety and capacitance. Plant, Cell and Environment. 34 (4): 643-654.

Lintz HE, B McCune, A Gray and K McCulloh. 2011. Quantifying ecological thresholds from response surfaces. Ecological Modelling. 222:427-436.

Meinzer, FC, KA McCulloh, B Lachenbruch, D Woodruff, and DM Johnson. 2010. The blind men and the elephant: The impact of context and scale in evaluating conflicts between plant hydraulic safety and efficiency. Oecologia. 164: 287-296.

McCulloh, K, J Sperry, B Lachenbruch, F Meinzer, P Reich, and S Voelker. 2010. Moving water well: comparing hydraulic efficiency in twigs and trunks of coniferous, ring-porous, and diffuse-porous saplings from temperate and tropical forests. New Phytologist. 186:439-450. (Tansley Medal Finalist).

Woodruff, D, FC Meinzer, and K McCulloh. 2010. Height-related trends in stomatal sensitivity to leaf-to-air vapour pressure deficit in a tall conifer. Journal of Experimental Botany. 61(1) 203-210.

McCulloh, K, JS Sperry, F Meinzer, B Lachenbruch, and C Atala.  2009. Murray's law, the “Yarrum” optimum, and the hydraulic architecture of compound leaves. New Phytologist. 184: 234-244.

Meinzer, FC, DM Johnson, B Lachenbruch, KA McCulloh, and DR Woodruff. 2009. Xylem hydraulic safety margins in woody plants: coordination of stomatal control of xylem tension with hydraulic capacitance. Functional Ecology. 23: 922-930.

Johnson D, D Woodruff, K McCulloh, and F Meinzer. 2009. Leaf hydraulic conductance, measured in situ, declines and recovers daily: leaf hydraulics, water potential and stomatal conductance in four temperate and three tropical tree species. Tree Physiology. 29: 879-887

Johnson, D, F Meinzer, D Woodruff, and K McCulloh. 2009. Leaf xylem embolism, detected acoustically and by cryo-SEM, corresponds to decreases in leaf hydraulic conductance in four evergreen species. Plant, Cell and Environment. 32 (7): 828-836

Domec, J-C, B Lachenbruch, F Meinzer, D Woodruff, J Warren, and K McCulloh. 2008. Maximum height in a conifer is associated with conflicting requirements for xylem design. PNAS. 105:12069-12074

Sperry, J, F Meinzer, K McCulloh. 2008. Safety and efficiency conflicts in hydraulic architecture: scaling from tissues to trees. Plant, Cell and Environment (invited review). 31: 632-645

McCulloh, K. K Winter, F Meinzer, M Garcia, J Aranda, and B Lachenbruch. 2007. A comparison of daily water use estimates derived from constant-heat sap-flow probe values and gravimetric measurements in pot-grown saplings. Tree Physiology. 27:1355-1360.

Woodruff, D, K McCulloh, J Warren, F Meinzer, and B Lachenbruch. 2007. Impacts of tree height on leaf hydraulic architecture and stomatal control in Douglas-fir. Plant, Cell and Environment. 30(5): 559-569

McCulloh, K, and J Sperry.  2005. The evaluation of Murray’s law in Psilotum nudum (Psilotaceae), an analogue of ancestral vascular plants.  American Journal of Botany. 92(6): 985-989.

McCulloh, K, and J Sperry.  2005. Patterns in hydraulic architecture and their implications for transport efficiency. Tree Physiology. 25:257-267.

McCulloh, K, J Sperry, and F Adler. 2004. Murray’s law and the hydraulic versus mechanical functioning of wood.  Functional Ecology 18: 931-938.

McCulloh, K, J Sperry, and F Adler. 2003. Water transport in plants obeys Murray’s law. Nature. 421, 939-942.

Hacke, U, V Stiller, J Sperry, J Pittermann, and K McCulloh. 2001. Cavitation Fatigue. Embolism and Refilling Cycles Can Weaken the Cavitation Resistance of Xylem. Plant Physiology. 125, 779-786.

Hacke, U, J Sperry, W Pockman, S Davis, and K McCulloh. 2001. Trends in wood density and structure are linked to prevention of xylem implosion by negative pressure. Oecologia. 126, 457-461.

Loudon, C and K McCulloh. 1999. Application of the Hagen-Poiseulle equation to fluid feeding through short tubes. Annals of the Entomological Society of America. 92 (1), 153-158.


McCulloh, K. 2004. Do plants obey Murray’s law? Ph.D. Dissertation. University of Utah, Salt Lake City, Utah, USA. 99 pp.

BOOK CHAPTERS (peer reviewed, except *)

Woodruff, DR, KA McCulloh, and FC Meinzer. 2016. Forest canopy hydraulics. Invited book chapter for Canopy photosynthesis: from basics to applications. K Hikosaka, N Anton, and U Niinemets eds. Springer, Dordrecht.

Johnson, DM, KA McCulloh, and K Reinhardt. 2011. Physiological and structural changes during the earliest phases of tree growth. Invited book chapter for Size- and Age-Related Changes in Tree Structure and Function. FC Meinzer, T Dawson, and B Lachenbruch, eds. Springer.

McCulloh, K, and J Sperry.  2006. Murray’s law and the mechanical architecture of plants.  In: Ecology and biomechanics. CRC Press Inc., Boca Raton, FL, USA.  

*McCulloh, K.  1997. Evolution and its threat to human health.  In: Western Civilization Program: Collected Readings (1997-1998 Edition).  Simon and Schuster, Needham Heights.


Gleason, SM, Westoby, M, Jansen, S, Choat, B, Brodribb, TJ, Cochard, H, Delzon, S, Hacke, UG, Jacobsen, AL, Johnson, DM, Lens, F, Maherali, H, Martínez-Vilalta, J, Mayr, S, McCulloh, KA, Morris, H, Nardini, A, Plavcová, L, Pratt, RB, Schreiber, SG, Zanne, AE. (2016) On research priorities to advance understanding of the safety-efficiency tradeoff in xylem. New Phytologist 209:123-136

Sack et al. 2016. Plant hydraulics as a central hub integrating plant and ecosystem function: meeting report for “Emerging Frontiers in Plant Hydraulic” (Washington, DC, May 2015). Plant, Cell and Environment. 39: 2085-2094

Meinzer, FC and KA McCulloh. 2013. Xylem recovery from drought-induced embolism: Where is the hydraulic point of no return? Tree Physiology. 33: 331-334.

McCulloh, KA, and DR Woodruff. 2012. Linking stomatal sensitivity to whole-tree hydraulic architecture. Tree Physiology. 32:369-372.

Meinzer, FC, KA McCulloh, B Lachenbruch, D Woodruff, and DM Johnson. 2011. Response to commentary by G. Petit and T. Anfodillo. Oecologia. 165: 275.


McCulloh, K. 2009. Review of Teaching plant anatomy through creative laboratory exercises. 2008. R.L. Peterson, C.A. Peterson & L.H. Melville. NRC Press, Ottawa, Ontario. In: IAWA Journal. 30(2):188.