Association of Local Government Ecologists
   Represents professional ecologists working in local government in the UK.
   http://www.alge.org.uk/

British Ecological Society
   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.
   http://www.britishecologicalsociety.org/

Central Rockies Chapter of the Society for Ecological Restoration
   Organization information and conference plans. Chapter covers Colorado, New Mexico, and Wyoming.
   http://bcn.boulder.co.us/environment/cerser/

Ecological Society
   Organization based in Pune, India that conducts courses in ecology and sustainable development. Goals are to document, study, educate, restore, and plan activities and projects that offer solutions to current environment problems.
   http://www.ecological-society.org/

Ecological Society of America
   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.
   http://www.esa.org/

Ecological Society of Australia
   Promotes ecological research and communication through publications and conferences. Contains links to ecological resources.
   http://www.ecolsoc.org.au/

European Ecological Federation
   Promotes cooperation within the science of ecology in Europe.
   http://www.eurecol.org/

International Association for Landscape Ecology - U.S. Regional Association
   Purpose is to promote the interdisciplinary research and communication among scientists, planners, and other professionals concerned with landscape ecology.
   http://www.usiale.org/

International Society of Chemical Ecology
   Dedicated to the study of chemical mechanisms which help control intra- and interspecific interactions among living beings, including pheromones and semiochemicals. Organization news and information, position announcements, and journal and conference info
   http://chemecol.org

Italian Society of Ecology
   Promoting ecological research by disseminating ecological knowledge, encouraging cultural interchange among researchers, and facilitating national and international cooperation.
   http://www.dsa.unipr.it/SITE/english/index.htm

New Zealand Ecological Society (Inc.)
   Formed to promote the study of ecology and the application of ecological knowledge in all its aspects. Attempts to encourage ecological research and increase awareness and understanding of ecological principles.
   http://www.nzes.org.nz/

Officers of Ecological Societies
   Forum established so that Presidents of various ecological societies can communicate and interact.
   http://life.csu.edu.au/esa/ecolsocforum.html

Organization of Biological Field Stations
   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
   http://www.obfs.org/

Physiological Ecology Section, ESA
   Section of the Ecological Society of America to promote research, teaching, and communication in physiological ecology of both animals and plants. Section news and events, positions available, and links to resources used by physiological ecologists.
   http://www.biology.duke.edu/jackson/ecophys/

Sino-Ecologists Club Overseas
   Organization for Chinese ecologists based outside of China.
   http://www.sino-eco.org/

Society for Ecological Restoration (SER)
   International professional membership organization for people researching, practicing or interested in Ecological Restoration.
   http://www.ser.org/

Southern African Institute of Ecologists and Environmental Scientists
   Information about activities, membership, ethics, certification.
   http://www.saiees.org/

Southwestern Association of Naturalists
   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.
   http://www.biosurvey.ou.edu/swan/

The George Wright Society
   A nonprofit association of researchers, managers, administrators, educators, and other professionals who work on behalf of the scientific and heritage values of protected areas.
   http://www.georgewright.org/

The Soil Ecology Society
   International organization of researchers, students, environmental professionals and others interested in the advancement and promotion of soil biology and ecology.
   http://www.wcsu.ctstateu.edu/ses/ses.html