Journal
MARINE AND FRESHWATER RESEARCH
Volume 62, Issue 3, Pages 279-289Publisher
CSIRO PUBLISHING
DOI: 10.1071/MF09298
Keywords
climate change; Coorong; ecosystem states; environmental flows; environmental management; hydrodynamic modelling; Ramsar wetland; water extraction
Funding
- CSIRO
- University of Adelaide
- Flinders University
- SARDI Aquatic Sciences
- Geosciences Australia
Ask authors/readers for more resources
Objectively assessing ecological benefits of competing watering strategies is difficult. We present a framework of coupled models to compare scenarios, using the Coorong, the estuary for the Murray-Darling River system in South Australia, as a case study. The framework links outputs from recent modelling of the effects of climate change on water availability across the Murray-Darling Basin to a hydrodynamic model for the Coorong, and then an ecosystem-response model. The approach has significant advantages, including the following: (1) evaluating management actions is straightforward because of relatively tight coupling between impacts on hydrology and ecology; (2) scenarios of 111 years reveal the impacts of realistic climatic and flow variability on Coorong ecology; and (3) ecological impact is represented in the model by a series of ecosystem states, integrating across many organisms, not just iconic species. We applied the approach to four flow scenarios, comparing conditions without development, current water-use levels, and two predicted future climate scenarios. Simulation produced a range of hydrodynamic conditions and consequent distributions of ecosystem states, allowing managers to compare scenarios. This approach could be used with many climates and/or management actions for optimisation of flow delivery to environmental assets.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available