1. Department of Environmental Sciences; Macquarie University; North Ryde New South Wales 2109 Australia
2. School of Environment; University of Auckland; Auckland New Zealand
3. Crown Lands and Water Division; NSW Department of Industry; Newcastle Australia
4. ARC Centre of Excellence for Australian Biodiversity and Heritage; University of Wollongong; Wollongong New South Wales Australia
5. GeoQuest Research Centre; University of Wollongong; Wollongong New South Wales Australia
6. Griffith Centre for Coastal Management; Griffith University; Nathan Queensland Australia
7. Crown Lands and Water Division; NSW Department of Industry; Wollongong Australia