Phylogeographic consequences of different introduction histories of invasive Australian Acacia species and Paraserianthes lophantha (Fabaceae) in South Africa
Johannes J Le Roux, Gillian K Brown, Margaret Byrne, Joice Ndlovu, David M Richardson, Genevieve D Thompson, John RU Wilson
Diversity and Distributions | WILEY | Published : 2011
Aim The genetic makeup and evolutionary potential of alien species can be profoundly influenced by their introduction history, but without detailed historical records, it can be difficult to ascertain the strength of this historical contingency. We explore how the known introduction histories combined with phylogeographic patterns in the native range have affected the genetic diversity in the invasive range for five Australian trees introduced to South Africa (Acacia cyclops, Acacia mearnsii, Acacia pycnantha, Acacia saligna and Paraserianthes lophantha). Location Western Australia, South Australia, Victoria and New South Wales (native and invasive ranges), and South Africa and the Hawaiian ..View full abstract
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Awarded by Australian Research Council
We thank Andrew Lowe and three anonymous reviewers for their constructive comments. This work was funded by the Working for Water Programme (WfW) and the DST-NRF Centre of Excellence for Invasion Biology through their collaborative project on 'Research for Integrated Management of Invasive Alien Species'. Some sequences of P. lophantha were generated with support from the Australian Research Council (grant no.: LP0669625). Joe Miller provided unpublished DNA sequence data. Field collections were made under the following collection permits [SW011714 and SW012946 (WA), U25730 1 (SA), 10005005 (Vic.), WT2008-3906 (ACT), S12920 (NSW)]. We thank William Haines for collecting Paraserianthes lophantha material from Maui, Kate Seabourn for assistance in the field in Australia and South Africa, and Leri Koegelenberg for assistance with molecular laboratory work. We also thank Martin O'Leary for morphological identifications, curation of herbarium samples at the South Australian Herbarium, and for providing valuable information on intra-specific variants of Acacia pycnantha. The Australian National Herbarium (CANB) and the National Herbarium of Victoria (MEL) are thanked for access to material for this study. The Oppenheimer Memorial Trust and Stellenbosch University funded the October 2010 workshop in Stellenbosch at which a preliminary version of this paper was presented.