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Trees

, Volume 31, Issue 1, pp 237–245 | Cite as

Wood decay and the persistence of resprouting species in pyrophilic ecosystems

  • Michael G. Just
  • Jennifer L. Schafer
  • Matthew G. Hohmann
  • William A. Hoffmann
Original Article
Part of the following topical collections:
  1. Phytopathology

Abstract

Key message

Along a fire frequency gradient, we found a savanna tree species had the greatest below ground decay compartmentalization after coppicing as compared to other resprouting species located at mesic gradient positions.

Abstract

In pyrophilic ecosystems, woody plants are repeatedly injured or topkilled (i.e. aboveground tissue is killed) by frequent fires, and many woody species persist in these systems through resprouting. Yet, many vigorously resprouting plants appear unable to persist in frequently burned landscapes. The success of resprouters has generally been attributed to the ability of these plants to store and remobilize carbohydrate reserves. For resprouting species, persistence might not be determined by resource reserves, but rather by their ability to prevent spread of wood decay after injury, there by maintaining the integrity of belowground organs. We hypothesized that species that persist in frequently burned areas are most capable of containing the extent of wood decay. To this end, we measured variables previously identified to limit the extent of decay in woody plants, including plant size, wood density, and lignin and extractable phenolic concentrations, on five woody species that occur along a fire frequency gradient in the Sandhills physiographic region of North Carolina, USA. We induced topkill by coppicing 19–20 individuals of each species. At 9 and 19 months after coppicing, we harvested the root crowns of half of the individuals per species. We found that the most fire-tolerant species (Quercus laevis) had the least amount of wood decay overall and the greatest wood density and lignin and phenolic concentrations. Q. laevis also had the least decay at both the 9- and 19-month post-coppicing harvest dates. We suggest that wood decay compartmentalization is a potentially overlooked aspect of resprouting success.

Keywords

Longleaf pine savanna Phenolics Quercus laevis Streamhead pocosin Wood rot Wood density 

Notes

Acknowledgments

We thank A. Ballard, B. Breslow, S. Byerly, D. Metiver, P. Mulvaney, A. Parot, and R. Sanders for research assistance. We wish to thank the Fort Bragg Forestry and Endangered Species branches for logistical support. This research was supported by a cooperative agreement between the US Army Engineer Research and Development Center and North Carolina State University (W9132T-11-2-0007 to W. A. H.). M. G. J. received support from a Southeast Climate Science Center fellowship.

Compliance with ethical standards

Conflict of interest

The authors declare they have no conflict of interest.

Supplementary material

468_2016_1477_MOESM1_ESM.xlsx (33 kb)
Supplementary material 1 (XLSX 32 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Michael G. Just
    • 1
    • 2
  • Jennifer L. Schafer
    • 3
  • Matthew G. Hohmann
    • 4
  • William A. Hoffmann
    • 1
  1. 1.Department of Plant and Microbial BiologyNorth Carolina State UniversityRaleighUSA
  2. 2.Department of Entomology and Plant PathologyNorth Carolina State UniversityRaleighUSA
  3. 3.Department of BiologyWilliam Jewell CollegeLibertyUSA
  4. 4.US Army Corps of Engineers, Engineer Research and Development CenterChampaignUSA

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