Encyclopedia of Animal Behavior'This comprehensive work covers not only the usual topics such as communication, learning, sexual selection, navigation, and the history of the field, but also emerging topics in cognition, animal welfare, conservation, and applications of animal behavior."
Encyclopedia of Biodiversity "Brings together, for the first time, a study of the dimensions of diversity...Major themes of the work include the evolution of biodiversity, systems for classifying and defining biodiversity, ecological patterns and theories of biodiversity, and an assessment of contemporary patterns and trends in biodiversity."
Encyclopedia of Life Sciences is "a monthly-updating reference work containing over 4,800 specially commissioned, peer-reviewed and citable articles written by leaders in the field. It offers comprehensive and authoritative coverage of the life sciences...."
Encyclopedia of Ocean Science"...includes approximately 500 articles covering the breadth and depth of the field with over 30% new and updated content reflecting the latest research in the field."
Oxford Reference Online: Sciencedelivers access to numerous "subject reference works from one of the world's biggest and most trusted reference publishers into a single cross-searchable resource."