Carbohydrate storage in five resprouting Florida scrub plants across a fire chronosequence
Article first published online: 9 JAN 2006
Volume 170, Issue 1, pages 99–106, March 2006
How to Cite
Olano, J. M., Menges, E. S. and Martínez, E. (2006), Carbohydrate storage in five resprouting Florida scrub plants across a fire chronosequence. New Phytologist, 170: 99–106. doi: 10.1111/j.1469-8137.2005.01634.x
- Issue published online: 9 JAN 2006
- Article first published online: 9 JAN 2006
- Received: 29 September 2005 Accepted: 4 November 2005
- anthrone technique;
- Florida scrub;
- nonstructural carbohydrates (NSC)
- • Most research analyzing nonstructural carbohydrate (NSC) concentrations on resprouter species in fire-controlled ecosystems has concentrated on how NSC concentrations recover immediately after fire. However, we know little of the effect of long periods without fire on NSC concentrations.
- • In order to assess the effect of different periods of time-since-fire on resprouter species, we studied carbohydrate concentrations (total [NSC], soluble sugars [SS] and nonsoluble sugars [NSS]) in five resprouting species with contrasting trends of abundance across a chronosequence of time-since-fire (0.5–40 yr) in Florida.
- • Carbohydrate concentrations were highest in species with specialized reserve organs. [SS] was mainly explained by factors related to plant size, whereas time-since-fire was the main factor explaining [NSS]. Changes in [NSS] and [NSC] were correlated with the time-since-fire abundance patterns.
- • Variation in [NSS] carbohydrates can be related to the structural development of vegetation, with only those species capable of accessing full light able to accumulate carbohydrates, whereas subordinate plants show reductions in the [NSS] carbohydrate fractions. In areas with long intervals between fires, this carbohydrate reduction could affect subsequent postfire resprouting vigour, although this remains to be confirmed.