NatureServe Explorer contains information on plants, animals, ecological associations and alliances, and ecological systems.

The Comprehensive Report for each species includes available information in the following categories: classification; conservation status; status rank factors; distribution; ecological and life history; economic attributes; management summary; authors and contributors; and references. Other report types-Summary, Conservation Status, Distribution, and Image-present different subsets of the available information. The Comprehensive Report for ecological units contains available information in the following categories: classification; related names; global conservation status; distribution; environmental setting; vegetation structure; dynamic processes; authors and contributors; and references

The table below summarizes the taxonomic coverage of data currently provided by NatureServe Explorer. Data are available for species and ecological communities and systems occurring in the United States and Canada for each of the following groups:

• Plants: all currently accepted native and exotic vascular plant species, subspecies, varieties and hybrids. Selected bryophytes and lichens including all those listed under the U.S. Endangered Species Act and those with status assigned by the Committee on the Status of Endangered Wildlife in Canada.
• Vertebrate Animals: all currently accepted vertebrate species native to the United States and Canada in the taxonomic groups shown in the table below (all vertebrates except marine fishes); selected native subspecies and populations including all those listed under the U.S. Endangered Species Act and those with status assigned by the Committee on the Status of Endangered Wildlife in Canada; selected exotic species and subspecies.
• Invertebrate Animals: all currently accepted species native to the United States and Canada in the taxonomic groups shown in the table below; selected other species and subspecies including all those listed under the U.S. Endangered Species Act and those with status assigned by the Committee on the Status of Endangered Wildlife in Canada; selected exotic species and subspecies.
• Ecological Units: all natural communities and ecological systems thus far defined by NatureServe as part of the International Ecological Classification Standard: Terrestrial Ecological Classifications with an emphasis on the contiguous United States, Hawaii, and parts of Canada for associations and alliances, and the United States and adjacent Canada and Mexico for ecological systems.

Overview of Species and Ecological Units in NatureServe Explorer