Predicting sapstain and degrade in fallen trees following storm damage in a Pinus radiata forest

McCarthy, J. K., Hood, I. A., Brockerhoff, E. G., Carlson, C. A., Pawson, S. M., Forward, M., Walbert, K. and Gardner, J. F. (2010) Predicting sapstain and degrade in fallen trees following storm damage in a Pinus radiata forest. Forest Ecology and Management, 260 9: 1456-1466. doi:10.1016/j.foreco.2010.07.044

Author McCarthy, J. K.
Hood, I. A.
Brockerhoff, E. G.
Carlson, C. A.
Pawson, S. M.
Forward, M.
Walbert, K.
Gardner, J. F.
Title Predicting sapstain and degrade in fallen trees following storm damage in a Pinus radiata forest
Journal name Forest Ecology and Management   Check publisher's open access policy
ISSN 0378-1127
Publication date 2010
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.foreco.2010.07.044
Open Access Status
Volume 260
Issue 9
Start page 1456
End page 1466
Total pages 11
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Collection year 2010
Language eng
Abstract Storm damage in production forests constitutes a major source of economic loss world wide, yet the retrieval of salvageable timber remains problematic. In particular, an inability to anticipate when sapstain and degrade will appear hampers the planning of log recovery operations. A study was conducted to monitor the deterioration of fallen trees following two winter storms causing wind and snow damage in a Pinus radiata plantation forest in the upper South Island of New Zealand. Percentage sapstain, incidence of basidiomycete decay fungi, and frequency of bark beetle infestation increased, while percentage sapwood moisture content decreased, over a period of 1 year. These changes proceeded more rapidly in fallen trees that were severed at stump height, to simulate breakage, than in those that were left partially rooted. There was little beetle activity at the time of the storms, but Arhopalus ferus (Coleoptera: Cerambycidae), and Hylastes ater, Hylurgus ligniperda and Pachycotes peregrinus (Coleoptera: Curculionidae: Scolytinae), were collected in flight traps during the following spring and summer. The predominant fungal species associated with sapstain was Diplodia pinea, while Ophiostoma piceae and Grosmannia huntii were isolated near the end of the period. The main decay fungi obtained were Phlebiopsis gigantea, Stereum sanguinolentum, and Schizophyllum commune. A generalized linear mixed model was constructed to predict the development of sapstain in fallen trees for conditions prevailing during the study after a storm at the same time of year. According to the model, a 10. m long butt log of 22. cm mid length diameter will have minimal stain (<10% of the cross sectional area affected) when cut from severed stems up to 4 months after the storm; if taken from still-rooted trees this period will extend to 1 year. However, because of large between-tree variation, economically productive log recovery will also depend on the proportion of trees that lie below an acceptable sapstain threshold. Further research is needed to determine regional and seasonal influences on the development of sapstain in fallen trees.
Keyword Bark beetles
Decay fungi
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
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Created: Mon, 09 Mar 2015, 08:37:12 EST by James McCarthy on behalf of School of Biological Sciences