"Despite many well-intentioned policies and changes to our management practices, our natural resources continue to decline. The roles and interplay between science and policy in the regional broadacre agriculture landscape are examined here, offering readers a thorough understanding of the complex interactions that occur across spatial scales to produce the regional-scale impacts. The fundamental causes of resource degradation, social decline and environmental pollution are addressed, examining the cross-scale drivers from the individual farm level to the global level of commodity systems. Broadacre agriculture is a common land use throughout all continents of the world and is driven by the same type of dynamics. This case study of the Western Australia agricultural region can be used to clearly demonstrate the principles for other commodity systems. Aimed at academics and researchers through to policy analysts, this book will inspire innovation and action in sustainable natural resource management."--Jacket.