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Testing the impact of community composition on the productivity of a cool temperate eucalypt forest: The Australian Forest Evenness Experiment (AFEX)

Citation

Gerwin, MR and Brinkhoff, R and Britton, TG and Porter, M and Mallett, RK and Hovenden, MJ, Testing the impact of community composition on the productivity of a cool temperate eucalypt forest: The Australian Forest Evenness Experiment (AFEX), Australian Journal of Botany, 68, (4) pp. 310-319. ISSN 0067-1924 (2020) [Refereed Article]


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DOI: doi:10.1071/BT19131

Abstract

Understanding the factors controlling productivity is crucial for modelling current and predicting future forest growth and carbon sequestration potential. Although abiotic conditions exert a strong influence on productivity, it is becoming increasingly evident that plant community composition can dramatically influence ecosystem processes. However, much of our understanding of these processes in forests comes from correlative studies or field experiments in short-statured, short-lived vegetation. Here, we present the background, design and implementation success of the Australian Forest Evenness Experiment (AFEX), which was designed to investigate the influence of community composition on the processes that contribute to forest productivity. Eighty 25 × 25-m plots, covering 5 ha in a logged, burnt forest coupe in south-eastern Tasmania were sown with four tree species, namely Eucalyptus delegatensis R.T.Baker, E. regnans F.Muell., Acacia dealbata Link and Pomaderris apetala Labill., in varying combinations to provide a range of evenness levels with each of the four species as target dominant. Despite some differences between sown composition and realised composition 1 year after sowing, a substantial range of community evenness and local neighbourhood densities and compositions existed in the experiment. Thus, this site provides a unique opportunity to determine the influence of local neighbourhood composition on a range of ecological processes.

Item Details

Item Type:Refereed Article
Keywords:carbon sequestration, complementarity, neighbourhood effects, selection effects, species richness, field experiment, tree growth, native forest silviculture
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Terrestrial ecology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Gerwin, MR (Miss Melissa Gerwin)
UTAS Author:Brinkhoff, R (Miss Rose Brinkhoff)
UTAS Author:Britton, TG (Mr Travis Britton)
UTAS Author:Porter, M (Ms Meagan Porter)
UTAS Author:Mallett, RK (Miss Ruth Mallett)
UTAS Author:Hovenden, MJ (Professor Mark Hovenden)
ID Code:145242
Year Published:2020
Deposited By:Plant Science
Deposited On:2021-07-13
Last Modified:2021-07-16
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