We thank N. Coombes and J. Ledet for assistance in the field and
laboratory, J. Lavender for analytical assistance and D. Edwards for
his advice and support with sediment analysis. We would also like
to thank J. Lee and B. Atkins from Mosman municipal council for providing information and support, and Manly and Woollahra
municipal councils for their assistance in undertaking this study.
This paper was improved by constructive comments from three
anonymous reviewers.