A Guide to Environmental Studies: Species and Ecology

Database providing taxonomic and distribution information for species facing risks of global extinction.

Database giving information about invasive and alien species. Managed by the Invasive Species Specialist Group of the IUCN Survival Commission.

Information on species that are listed, proposed for listing, or candidates for listing under the Endangered Species Act (ESA). Managed by the US Fish and Wildlife Service (USFWS). Clicking on the ‘box score’ tab will direct you to statistics on how many species from plant and animal groups are listed.