Davis, Stephen D.; Ewers, Frank W.; Portwood, K imberly A.; Crocker, Michelle C.; Adams, Gerard C.
Shoot dieback during prolonged drought in Ceanothus (Rhamnaceae) chaparral of California: a possible case of hydraulic failure
Progressive diebacks of outer canopy branchlets of Ceanothus crassifolius were repeatedly observed after rainless periods up to 9 mo in duration in the Santa Monica Mountains of southern California. Mean xylem pressures of branchlets near the end of drought were as low as -11.2 MPa (N = 22) with a mean of about 60 dead branchlets per shrub.
Botanical Society of America
Water relations; xylem cavitation; water-stress-induced loss
Davis, S. D., Ewers, F. W., Sperry, J. S., Portwood, K. A., Crocker, M. C., & Adams, G. C. (2002). Shoot dieback during prolonged drought in Ceanothus (Rhamnaceae) chaparral of California: a possible case of hydraulic failure. American Journal of Botany, 89(5), 820-8.