International organization of researchers, students, environmental professionals and others interested in the advancement and promotion of soil biology and ecology.

Promotes ecological research and communication through publications and conferences. Contains links to ecological resources.

Includes more than 200 field stations and professionals concerned with field facilities for biological research and education, primarily in North America and Central America. Provides information about the LTER network, links member stations

Promotes cooperation within the science of ecology in Europe.

Represents professional ecologists working in local government in the UK.

Works to promote ecological science by improving communication among ecologists; raising public awareness; increasing the resources available for ecological science; and ensuring the appropriate use of ecological science in environmental decision making.

Purpose is to promote the interdisciplinary research and communication among scientists, planners, and other professionals concerned with landscape ecology.

Organization for Chinese ecologists based outside of China.

Promotes the field study of plants and animals (living and fossil) in the southwestern United States, Mexico, and Central America and to aid in the scientific activities of its members.

Promotes the science of ecology through research, publications and conferences and uses the findings of research to educate the public and to influence policy decisions which involve ecological matters.