The Chemistry of Algal Secondary Metabolism -- Macroalgal Chemical Defenses and Their Roles in Structuring Tropical Marine Communities -- Macroalgal Chemical Defenses and Their Roles in Structuring Temperate Marine Communities -- Macroalgal Chemical Defenses in Polar Marine Communities -- Macroalgal and Cyanobacterial Chemical Defenses in Freshwater Communities -- New Perspectives for Addressing Patterns of Secondary Metabolites in Marine Macroalgae -- Macroalgal Models in Testing and Extending Defense Theories -- Ecological and Physiological Roles of Dimethylsulfoniopropionate and its Products in Marine Macroalgae -- Influence of Algal Secondary Metabolites on Plankton Community Structure -- Herbivore Offense in the Sea: The Detoxifi cation and Transport of Secondary Metabolites -- Secondary Metabolite Defenses Against Pathogens and Biofoulers -- Oxidative Burst and Related Responses in Biotic Interactions of Algae -- Defense Strategies of Algae and Cyanobacteria Against Solar Ultraviolet Radiation -- Algal Sensory Chemical Ecology. This is the first ever book devoted entirely to the chemical ecology of algae. Algae from both marine and freshwater habitats are covered, as are macroalgae (seaweeds) and microalgae (including phytoplankton). While its main emphasis is on the ecological rather than chemical aspects of the field, the book also includes a unique introductory chapter intended as a primer on algal natural products chemistry for ecologists. It elucidates the roles of chemical defenses in various regions and habitats, of DMSP, oxidative burst responses, and herbivore offense. Topics such as algal sensory chemical ecology and defenses against ultraviolet radiation are also treated, and an introduction to the chemical ecology of phytoplankton is provided. Focusing on recent advances and also on topics particularly useful for undergraduate and graduate level courses, Algal Chemical Ecology is designed for research biologists working in the field as well as marine ecologists and algal biologists seeking an introductory guide.