Lawren                         Sack

Lawren Sack


phone:  (310) 825-6525
office:  LSB 3229
lab:   (310)206-2887

Recent Courses

EE BIOL 162 - Plant Physiology
EE BIOL 194B - Research Group or Internship Seminars: Ecology and Evolutionary Biology


B.Sc., McGill University 1995
Ph.D., Cambridge University 2001

Research Interests

We are interested broadly in mechanisms underlying function and co-existence of plant species-- including responses to resources, tolerance of environmental challenges, and competition-- as well as the evolution and functional consequences of diversity in plant traits. We explore processes across scales ranging from molecules to ecosystems.
Examples of current research areas include hydraulics of leaves and whole plants; evolution and functional consequences of diversity in leaf designs; plant responses to resource supply combinations; scaling laws of plant design during evolution and ontogeny; evolutionary, ecological and conservation plant physiology; ecohydrology of native vs invasive dominated forests.

Selected Publications

Buckley TN, Sack L, Farquhar GD., "Optimal plant water economy", Plant, Cell & Environment, - (2016) .

Sack L, Buckley TN, Scoffoni C., "Insight. Why are leaves hydraulically vulnerable?", Journal of Experimental Botany, 17 : 4917-4919 (2016) .

Anderegg WRL, Klein T, Bartlett M, Sack L, Pellegrini A, Choat B, Jansen S., "Meta-analysis reveals that hydraulic traits explain cross-species patterns of drought-induced tree mortality across the globe", Proceedings of the National Academy of Sciences USA, 113 : 5024-5029 (2016) .

Marchaux I, Bartlett MK, Gaucher P, Sack L, Chave J., "Causes of variation in leaf-level drought tolerance within an Amazonian forest", Journal of Plant Hydraulics, 113 : - (2016) .

Sack L, Ball MC, Brodersen C, Davis SD, Des Marais DL, Donovan LA, Givnish TJ, Hacke UG, Huxman T, Jansen S, Jacobsen AL, Johnson D, Koch GW, Maurel C, McCulloh K, McDowell NG, McElrone A, Meinzer FC, Melcher PJ, North G, Pellegrini M, Pockman WT, Pratt RB, Sala A, Santiago LS, Savage JA, Scoffoni C, Sevanto S, Sperry J, Tyerman SD, Way D, Holbrook NM., "Plant hydraulics as a hub integrating plant and ecosystem function", Plant, Cell & Environment, 39 : 2085-2094 (2016) .

Sack L, Buckley TN., "The developmental basis of stomatal density and flux", Plant Physiology, 171 : 2358-2363 (2016) .

Buckley TN, John GP, Scoffoni C, Sack L., "How does leaf anatomy influence water transport outside the xylem?", Plant Physiology, 168 : 1616-1635 (2015) .

Merkhofer L, Wilf P, Haas MT, Kooyman RM, Sack L, Scoffoni C, Cuneo NR., "Resolving Australian analogs for an Eocene Patagonian paleorainforest using leaf size and floristics", American Journal of Botany, 102 : 1160-1173 (2015) .

. Poorter H, Jagodzi?ski A, Ruz-Peinado R, Kuyah S, Luo Y, Oleksyn J, Usoltsev V, Buckley T, Reich PB, Sack L., "How does biomass allocation change with size and differ among species? An analysis for 1200 plant species from five continents", New Phytologist, 208 : 736-749 (2015) .

Sack L, Scoffoni C, Johnson DM, Buckley TN, Brodribb TJ. 2015., "The anatomical determinants of leaf hydraulic function", In: Functional and Ecological Xylem Anatomy, U.G. Hacke(Eds.), New York Springer 208 : 255-271 (2015) .