Anthea Challis¹, Paul Rymer², Collin W Ahrens³, Chris Blackman², Belinda Medlyn⁴ and David Tissue¹, (1)University of Western Sydney, Penrith, NSW, Australia, (2)University of Western Sydney, Penrith, Australia, (3)University of Western Sydney, Hawkesbury Institute for the Environment, Richmond, NSW, Australia, (4)Western Sydney University, Hawkesbury Institute for the Environment, Sydney, Australia