I Primary Producers in Marine Environments.- 1 Producers and Processes Involved in Primary Production.- 2 Factors Affecting Primary Production.- II Consumers in Marine Environments.- 3 Dynamics of Populations of Consumers.- 4 Competition for Resources Among Consumers.- 5 Feeding and Responses to Food Abundance.- 6 Food Selection by Consumers.- 7 Processing of Consumed Energy.- III Interaction of Producers and Competition and Consumption.- 8 The Consequences of Competition Among Producers and Consumption by Herbivores.- 9 The Consequences of Competition Among Prey and Consumption by Predators.- IV Organic Matter, Decomposition, and Nutrient Cycles.- 10 Transformations of Organic The Carbon Cycle.- 11 Nutrient Phosphorus, Nitrogen, and Sulfur.- V Structure of Marine Communities.- 12 Taxonomic Species Diversity.- 13 Spatial Structure Over Space.- 14 The Structure of Marine Communities Over Long and Short-Term Changes.- 15 The Structure of Marine Communities Over Colonization and Succession.- References.