Journal article
Genetic and Ecological Variation in Atherosperma moschatum and the Implications for Conservation of Its Biodiversity
Australian Journal of Botany, Vol.42(6), pp.663-689
1994
Abstract
Population genetics and ecology of Atherosperma moschatum Labill. (sassafras), a major canopy tree of Australian temperate rainforests, were examined and used to identify priorities and strategies for conservation of its genetic diversity. The genetic diversity among populations was fairly low, but higher than average for long-lived late successional or wind dispersed species (Hamrick and Godt 1989). Genetic distances between populations were correlated with geographic distances and climatic differences. The major genetic differentiation was between the mainland populations and those in Tasmania, with the New South Wales populations being quite genetically distinct. Most genetic variation was found within populations, however, most populations were inbred. This is likely to be due to selfing and spatial genetic substructure resulting from vegetative spread and local dispersal. There was evidence of regeneration in all populations, however no consistent regeneration patterns emerged. Population density was inexplicably correlated with genetic distance. There was as much diversity in all variables (ecological and genetic) measured in small isolated populations as there was in stands within larger assemblages; therefore, population size does not appear to be a major factor affecting viability. Genetic variation was spread throughout the distribution of A. moschatum. Therefore, populations from throughout its range would need to be conserved to retain the genetic diversity within this species.
Details
- Title
- Genetic and Ecological Variation in Atherosperma moschatum and the Implications for Conservation of Its Biodiversity
- Authors
- Alison Shapcott (Author) - University of Tasmania
- Publication details
- Australian Journal of Botany, Vol.42(6), pp.663-689
- Publisher
- C S I R O Publishing
- Date published
- 1994
- DOI
- 10.1071/BT9940663
- ISSN
- 0067-1924
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99449035502621
- Output Type
- Journal article
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