Courtesy of the Sydney Olympic Park WET program you can access a recording of the following webinar, delivered by Adjunct Professor Nicholas Davidson, former Deputy Secretary General of the Ramsar Convention on Wetlands.
Title of webinar: The value and state of the world's wetlands and the role of Ramsar Convention in wetland conservation.
It is in my opinion well worth listening to.
You can view the recording from this link, and at the bottom of the page click on Register to our webinar recording
Please also take the opportunity to check the WET eBook: Workbook for Managing Urban Wetlands in Australia