Food chains and human nutrition

Ecological Concepts and Their Relevance to Human Nutrition.- Man's Demand for Energy.- World Production of Organic Matter.- Secondary Production in the Oceans.- Secondary Production from Land.- Amino Acids: Production by Plants and the Requirements of Man.- The Nitrogen Economy of Marine and Land Environments.- Man's Impact on Environmental Systems.- Man and the Major Mineral Elements.- Uptake of Some Major Mineral Elements by Plants.- Trace Mineral Elements, Mammalian Requirements and Man's Presumptive Needs.- Trace Elements in Soils and Plants.- Trace Elements in the Marine Environment.- Support Energy from Fossil Fuels.- Radioactive Materials.- Radioactive Materials-the Aquatic Environment.- Pesticides and Other Man-made Chemicals and the Food Chain.- Implications of the Intensification of Agriculture for Ecological Problems.- Implications for Human Health and Nutrition and the Research That Needs to be Done.- List of Participants.