American Association for the Advancement of Science
American Association of Avian Pathologists
American Association of Botanical Gardens and Arboreta
American Association of Zoo Keepers
American Bryological and Lichenological Society
American Fisheries Society
American Horticulture Society
American Microscopical Society, Inc.
American Ornithologists' Union
American Society for Biochemistry and Molecular Biology
American Society for Cell Biology
American Society for Microbiology
American Society of Agronomy
American Society of Animal Science
American Society of Ichthyologists and Herpetologists
American Society of Limnology and Oceanography
American Society of Mammalogists
American Society of Naturalists
American Society of Parasitologists
American Society of Plant Physiologists
American Society of Plant Taxonomists
American Society of Primatologists
American Statistical Association
American Zoo and Aquarium Association
Animal Behavior Society
Association for the Study of Animal Behaviour
Association for Tropical Biology
Association of Applied IPM Ecologists
Association of Ecosystem Research Centers
Association of Field Ornithologists
Australasian Society for Phycology and Aquatic Botany (ASPAB)
Botanical Society of America
British Bryological Society
British Cactus and Succulent Society
British Ecological Society
British Mycological Society
British Phycological Society
British Society for Cell Biology
British Society of Soil Science
CAB (Commonwealth Agricultural Bureaux) International
Canadian Society for Horticultural Science
Canadian Society of Agronomy
Canadian Society of Animal Science
Canadian Society of Soil Science
Company of Biologists Limited
Conchologists of America, Inc.
Cooper Ornithological Society
Crop Science Society of America
Crustacean Society
CSIRO (Commonwealth Scientific and Industrial Research Organization)
Defenders of Wildlife
Deutsche Zoologische Gesellschaft
Ecological Society of America
Entomological Society of America
Entomological Society of Canada
European Microscopy Society
European Molecular Biology Organization (EMBO)
European Mosquito Taxonomy Group (MOTAX)
Genetics Society of America
Great Lakes Fishery Commission
Herpetologist's League
Institute of Zoology
International Association for Plant Taxonomy
International Association of Bryologists
International Association of Hydrological Sciences
International Association of Lichenologists
International Association of Theoretical and Applied Limnology
International Association of Vegetation Science
International Commission on Zoological Nomenclature
International Council for the Exploration of the Seas (ICES)
International Mycology Association
International Organization for Biological Control of Noxious Animals and Plants
International Organization for Plant Information
International Phychological Society
International Society for Ecosystem Health
International Society for Horticultural Science
International Society for Microbial Ecology
International Society for Molecular Plant-Microbe Interactions
International Society for the History, Philosophy, and Social Studies of Biology
International Society of Photosynthesis Research
International Union of Biological Sciences
International Union of Forestry Research Organizations
IUCN - World Conservation Union
Linnean Society of London
Microscopy Society of America
Mycological Society of America
Tree Care Industry Association
National Audubon Society
National Fish and Wildlife Foundation
National Resources Defense Council
National Wildlife Federation
Natural Science Collections Alliance
Nature Conservancy (The)
New York Botanical Garden
North American Association for Environmental Education
North American Benthological Society
North American Lake Management Society
North American Mycological Societies
Organization for Tropical Studies
Paleontological Association
Paleontological Society
Phycological Society of America
Royal Belgian Zoological Society
Royal Entomological Society
Royal Horticultural Society
Royal Microscopy Society
Scholarly Societies Project
Sierra Club
Society for Conservation Biology
Society for Developmental Biology
Society for Ecological Restoration
Society for Economic Botany
Society for General Microbiology
Society for Industrial Microbiology
Society for Integrative and Comparative Biology
Society for Invertebrate Pathology
Society for Molecular Biology and Evolution
Society for the Preservation of Natural History Collections
Society for the Study of Amphibians and Reptiles
Society of American Foresters
Society of Systematic Biologists
Society of Nematologists
Society of Protozoologists
Society of Vertebrate Paleontology
Soil Science Society of America
Tropical Biology Association
Weed Science Society of America
Wildlife Disease Association
Willi Henning Society (Cladistics)
Wilson Ornithological Society
World Aquaculture Society