RESEARCH ARTICLE (Open Access) Previous Next Online Early Stephen A. J. Bell A * , Phil Lamrock B , Heather A. Haines C and Chris Turney C D E + Author Affiliations - Author Affiliations A Conservation Science Research Group, School of Environmental and Life Sciences, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia. B Cormal Environmental, Mudgee, NSW 2850, Australia.