This directory consolidates the breadth of ground-breaking research commissioned by the National Dryland Salinity Program (NDSP) with significant research findings and resources on dryland salinity developed throughout Australia over the past 10 years. It captures research undertaken at the national, State and regional levels, and interprets the findings for the catchment manager. It is framed around five vital questions for catchment managers, and each chapter starts by addressing why the particular question is important. * Question 1 - What is the current extent of dryland salinity and its risk of spreadΓ * Question 2 - What are the causes and processes of dryland salinityΓ * Question 3 - What are the current and predicted impacts and costs of dryland salinityΓ * Question 4 - What can we do and how do we measure progressΓ * Question 5 - How do we integrate with other natural resource management issuesΓ