Spatially explicit competition in a mixed planting of Araucaria cunninghamii and Flindersia brayleyana

Vanclay, Jerome K., Lamb, David, Erskine, Peter D. and Cameron, David M. (2013) Spatially explicit competition in a mixed planting of Araucaria cunninghamii and Flindersia brayleyana. Annals of Forest Science, 70 6: 611-619. doi:10.1007/s13595-013-0304-x


Author Vanclay, Jerome K.
Lamb, David
Erskine, Peter D.
Cameron, David M.
Title Spatially explicit competition in a mixed planting of Araucaria cunninghamii and Flindersia brayleyana
Formatted title
Spatially explicit competition in a mixed planting of Araucaria cunninghamii and Flindersia brayleyana
Journal name Annals of Forest Science   Check publisher's open access policy
ISSN 1286-4560
1297-966X
Publication date 2013-09
Sub-type Article (original research)
DOI 10.1007/s13595-013-0304-x
Volume 70
Issue 6
Start page 611
End page 619
Total pages 9
Place of publication Paris, France
Publisher Springer France
Collection year 2014
Language eng
Formatted abstract
• Context A 20-year-old Nelder wheel planted with hoop pine (Araucaria cunninghamii Aiton ex D.Don) and Queensland maple (Flindersia brayleyana F.Muell.) in 18 spokes and 8 rings represents nominal point densities of 3,580, 2,150, 1,140, 595, 305, 158, 82, and 42 stems/ha and offers an opportunity to examine competition and spatial interaction between these two species.

• Aims This study aimed to evaluate the intraspecific and interspecific competition between two contrasting tree species and to determine the distance over which competition can be observed.

• Methods
Competition was estimated using Hegyi’s index, implemented using the Simile visual modeling environment, and calibrated using nonlinear least squares with PEST.

• Results Interactions were detected between pairs of stems closer than Dij<40(di+dj) where D is distance (in centimeters) and d is stem diameter (in centimeters diameter at breast height). F. brayleyana trees surrounded by A. cunninghamii trees experience negligible competition, whereas A. cunninghamii surrounded by F. brayleyana trees suffer strong competition.

• Conclusion Forty times diameter offers a useful guide to the extent of competition in even-aged stands planted with these species. Competition can be observed empirically when pairs of trees are closer than 40 times the sum of their diameters, but the intensity of the competition may vary considerably with species.
Keyword Araucaria cunninghamii
Clinal spacing trial
Flindersia brayleyana
Hegyi index
Hoop pine
Interspecific competition
Nelder wheel
Queensland maple
Distance-dependent competition
Basal area increment
Tree growth-models
Species plantations
Individual trees
Predicting growth
Diameter growth
Norway spruce
Indexes
Forest
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Mined Land Rehabilitation Publications
Official 2014 Collection
 
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