Wetlands - Exploring Environmental Challenges Author:Sharon L. Spray Wetlands introduces students to the natural ecological functions and policy issues of wetlands so they will have a solid understanding of why these ecosystems are necessary and why their governance remains a significant environmental challenge. Although not a comprehensive overview on wetlands, it does provide background material for a more comp... more »rehensive investigation into the science behind and the management of these ecosystems. Visit our website for sample chapters!« less