Introduction to a Special Issue: Regional Food and Nutritional Security in Tanzania – Methods, Tools and Applications

Trans-SEC: Regional Food and Nutritional Security inTanzania: Methods, Tools and Applications for participativeAction Research. Part 1. This special issue is composed of 13 papers and represents Part 1 of the papers from the Trans-Sec project. Further papers will be published in the April 2018 issue of Food Security. We focus on the tools, methods and applications that we have developed to achieve multiple objectives. The thematically-clustered group of papers focus on (I) frame conditions and cross-cutting research issues, (II) tools and surveys, which support decisions or the assessment of impacts or (III) participative approaches for implementation of agricultural interventions (UPS) involving their stakeholders.