Agriculture Network Information Center - a guide to quality agricultural information as selected by the National Agricultural Library, Land-Grant Universities, and other institutions.

The Arid Lands Newsletter - explore events and issues of interest to arid lands researchers, resource managers, and policy makers around the globe.

California Invasive Plant Council - protects California's lands and waters from ecologically-damaging invasive plants through science, education and policy.

California Native Plant Society - a statewide non-profit organization with a common interest in California's native plants.

Conservation Biology Institute (CBI) - provides scientific expertise to support the conservation and recovery of biological diversity in its natural state through applied research, education, planning, and community service.

Endangered Habitat Conservancy (EDC) - is a nonprofit land trust organization that works to help conserve the remaining natural wildlands of Southern California.

Island Press - an online publication with pointers to environmental information.

Ecological Society of America - promotes ecological science, increases the resources available for the conduct of ecological science, and ensures the appropriate use of ecological science in environmental decision making.

Ecology WWW Sites - a volunteer service to students, teachers, researchers, and others interested in the science of ecology

Forest Mycology and Mycorrhiza Research Team - research on the biology and ecology of forest fungi in Pacific Northwest forest ecosystems.

Information Center for the Environment - Geographic information system (GIS), database, and modeling development and support.

Long Term Ecological Research - a collaborative effort involving more than 1800 scientists and students investigating ecological processes over long temporal and broad spatial scales.

Natural Resources Research Information Pages - an internet resource guide for researchers, practitioners and students in the natural resources field.

The Ordination Web Page (Oklahoma State University) - is designed to address some of the most frequently asked questions about ordination.

Santa Margarita Ecological Reserve - a Research Field Station of San Diego State University.

Society for Ecological Restoration (SER) - promotes ecological restoration as a means of sustaining the diversity of life on Earth and reestablishing an ecologically healthy relationship between nature and culture.

Soil Science Ecology

Soil Science Society of America - the professional home for over 6,000 professionals throughout the world dedicated to the advancement of soil science.

Natural Resources

Natural Resources Institute - an internationally recognised centre of expertise in research and consultancy in the environment and natural resources sector.