The Heinz Center's State of the Nation's Ecosystems
ecosystem: Freshwater
indicator Name: At-Risk Freshwater Plant Communities, by risk category (Wetlands only)
page # in printed report: 148
location on page: top
data source: NatureServe and its natural heritage member programs. Coverage: excludes Alaska.
notes: please see technical notes for further details on accessing these data from their original source; this data table comes from a specific graphic in The State of the Nation's Ecosystems report (www.heinzctr.org/ecosystems)

units: % of freshwater communities
  2000 Future
Critically imperiled 11.7  
Imperiled 23.8  
Vulnerable 24.7  
Total At-Risk 60.2