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The impact of clonality on an endangered tree (Elaeocarpus williamsianus) in a fragmented rainforest
Citation
Rossetto, M and Gross, CL and Jones, R and Hunter, J, The impact of clonality on an endangered tree (Elaeocarpus williamsianus) in a fragmented rainforest, Biological Conservation, 117 pp. 33-39. ISSN 0006-3207 (2004) [Refereed Article]
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The definitive version is available at http://www.sciencedirect.com
Official URL: http://dx.doi.org/10.1016/S0006-3207(03)00260-x
DOI: doi:10.1016/S0006-3207(03)00260-X
Abstract
The occurrence and distribution of clonality in the endangered rainforest tree Elaeocarpus williamsianus (Elaeocarpaceae) was
investigated using SSR and RAPD analyses for 170 apparent individual trees found across seven sites. The results obtained with the
two molecular techniques were in complete agreement in showing that single clones are present in most of the E. williamsianus sites
with two genets occurring at the largest and most adequately protected site. In addition, seed production, viability and germinability
were determined for four of these populations. Fruit were produced in all four populations tested although sterile fruit were
very common. Only two E. williamsianus trees representing different genets within the same site produced viable seed. The overall
genetic diversity within E. williamsianus is much lower than expected and thus the potential for sexual reproduction has been significantly
diminished. It is concluded that habitat fragmentation removed an existing balance between vegetative and sexual
reproduction in this species. Such findings have added urgency to the management of this species which could include a
reintroduction program incorporating the collation of all clones within selected sites.
Item Details
Item Type: | Refereed Article |
---|---|
Research Division: | Biological Sciences |
Research Group: | Genetics |
Research Field: | Genetics not elsewhere classified |
Objective Division: | Environmental Management |
Objective Group: | Terrestrial systems and management |
Objective Field: | Terrestrial biodiversity |
UTAS Author: | Jones, R (Dr Rebecca Jones) |
ID Code: | 72444 |
Year Published: | 2004 |
Web of Science® Times Cited: | 51 |
Deposited By: | Plant Science |
Deposited On: | 2011-08-26 |
Last Modified: | 2011-09-08 |
Downloads: | 0 |
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