from Part II - Modern invaders
Published online by Cambridge University Press: 05 February 2014
Introduction
The invasion of many habitats by exotic shrubs and trees has been an important factor causing changes in Australian native vegetation through declines in species richness, changes to community composition and reducing ecosystem function (Lindsay and French 2004; Gosper et al. 2006; Mason and French 2007; Gooden et al. 2009). Costs of management have been high (Sinden et al. 2004) and research into management options extensive. Whilst management-oriented research places Australia at the leading edge of the field (Briese 2004), this has been at the expense of research testing hypotheses about mechanisms of invasion in Australia.
Information on the novel distribution, population dynamics and ecology of the majority of invasive species is largely unknown. Ten species of exotic woody shrub or small tree are among the 20 Weeds of National Significance (WoNS) classified by the Australian Federal Government, reflecting their extensive current and/or projected impact on native and agricultural communities. Funding for weed research is largely focused on these WoNS but directed specifically to the development of successful management options. Very little is directed to understanding invasion or impacts. Additionally, a further 100 shrubs and trees (and more herbs, grasses and vines) are known as significant environmental weeds and described in a range of land management resources (e.g. http://www.weeds.org.au). Almost nothing is understood about these species. Many invasive shrubs and trees have invaded from horticultural stock, and the species may differ from native stock (e.g. Lantana camara L., lantana, Figure 13.1) causing difficulties in both management and in understanding ecological consequences.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.