Total available carbohydrates in serviceberry after late dummer and fall burning

Abstract

Total available carbohydrate (TAC) storage and depletion was measured in late summer and fall burned and unburned serviceberry (Amelanchier alnifolia). The purpose of the study was to assess the influence of late season prescribed fire on the vigor of serviceberry, a key browse species on white-tailed deer (Odecoileus virginianus ochrourus) winter range in northeastern Washington. All plants displayed similar TAC cycles through the first growing season following treatment. TAC levels in stems were highest prior to bud activity and declined during the early stages of growth (March, April, May). The low levels of stem TAC coincided with periods of maximum stem growth. Roots had the highest TAC concentrations prior to dormancy, then declined as stem elongation progressed to mid-season. After maximum stem elongation, root TAC levels increased significantly through the remaining growing season. Late summer burned plants displayed immediate new growth following treatment and advanced phenology during the first growing season in contrast to fall burned and control plants. The first year growth of fall burned shrubs was delayed until after control plants had initiated stem elongation. Neither burn treatment had major impacts on carbohydrate storage nor vigor of shrub growth.

Parent Publication

• Shrubland ecosystem genetics and biodiversity: proceedings

Citation

Zamora, Benjamin; Gnojek, Thomas. 2001. Total available carbohydrates in serviceberry after late dummer and fall burning. In: McArthur, E. Durant; Fairbanks, Daniel J., comps. Shrubland ecosystem genetics and biodiversity: proceedings; 2000 June 13-15; Provo, UT. Proc. RMRS-P-21. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 302-305.