2. The recreational and human health costs from declining water quality in the Swartkops estuary, South Africa
3. Improving water quality in the Swartkops Estuary: impacts on ecosystem services
4. Economics of water hyacinth removal in the Swartkops estuary
5. The economic benefits of removing Spartina alterniflora from the Great Brak estuary
6. The economic benefits of restoring Knysna estuary following the 2017 Great Fire
7. Discussion and summary of findings
Douglas J. Crookes is an associate professor of environmental governance in the School for Public Leadership at Stellenbosch University, South Africa. He has over 22 years of experience conducting problem-focused and applied research at the interface between the environment and economics. He is the author of Mathematical Models and Environmental Change: Case Studies in Long Term Management (Routledge, 2022).