http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
The book concentrates on the ideas and techniques that separate different concept-based approaches to the study of ecology. It discusses six kinds of ecology: landscape, physiological ecosystem, population, community, anf behavioral, focusing on the kinds of questions ecologists ask about their world rather than on accumulated ecological knowledge.