Note that the data published in the 2002 State of the Nation’s Ecosystems Report as well as the 2003 and 2005 Web-Only Updates have been superseded by the 2008 Report and thus should be used with caution. For the most recent data, purchase the 2008 Report from Island Press.

The Data Gap

The technical note for the grasslands/shrublands indicator on non-native plant cover describes some of the public and private efforts under way to determine the extent of nonnative plant cover, which would be useful for inferring the coverage of native species.

The technical note for the farmlands extent indicator describes sources of information on the extent and location of croplands.