In this volume, an international group of contributors explores the newly emerging aquaculture industry. Focusing on the social and environmental dimensions of aquacultural development in both industrialized and nonindustrialized nations, they examine issues of social equity, user-group conflict, environmental impacts of production, and the mediating role of the state. They also discuss aquaculture's role in development activity-especially in sustainable development, where it can enhance community viability, coherence, and solidarity. Asserting the need for careful planning and recognizing impending political and moral choices, the contributors assess the decisionmaking process for public authorities and development agencies and consider the social consequences of these decisions. Policymakers responsible for promoting and managing this growing industry will find this volume invaluable as they begin to research and design appropriate institutional structures. In addition, scholars interested in the overall adoption and diffusion of new technologies will find here a rich source of information about a system that shares attributes with but also differs significantly from agricultural and fisheries production systems.

This fourth edition of Organic Waste Recycling is fully updated with new material to create a comprehensive and accessible textbook: - New chapter on constructed wetlands for wastewater and faecal sludge stabilization. - New sections on: waste recycling vs. climate change and water; faecal sludge and its characteristics; hydrothermal carbonization technology; up-to-date environmental criteria and legislation and environmental risk assessment. - New case studies with emphasis on practices in both developed and developing countries have been included, along with more exercises at the end of chapters to help the readers understand the technical principles and their application. - Novel concepts and strategies of waste management are presented. - Up-to-date research findings and innovative technologies of waste recycling program are provided. This textbook is intended for undergraduate and graduate students majoring in environmental sciences and engineering as well as researchers, professionals and policy makers who conduct research and practices in the related fields. It is essential reading for experts in environmental science and engineering and sustainable waste reuse and recycling in both developed and developing countries.

Biological and physiological systems: animal sciences. Plant-animal interactions in northern temperate sown grasslands and semi-natural vegetation. Exploitation of the systems approach in technical design of agricultural enterprises. Application of systems theory to farm planning and control: modelling resource allocation. Optimising the mixture of enterprises in a farming system. Farming systems research-extension. Food policy and food security planning: institutional approaches to modelling grain markets and food security in Sub-Saharn Africa. A systems view of commercial supply and marketing links. Agroecosystems. Understanding and managing changes in agriculture. Agricultural sector modelling for policy development. Of agricultural systems and systems agriculture: systems methodologies in agricultural education. Extension education: Top(s) Down, Bottom(s) Up and Other Things.

Over the past two decades, significant investment has been made into agriculture-related natural resource management research in developing countries. This collection of case studies establishes a methodological foundation for impact assessments of NRMR through a discussion of research conducted by the CGIAR around the world.