Classification of Wetlands and Deepwater Habitats of the United States of the United States Website for the Manual: http://www fws gov/nwi/Pubs Reports/Class Manual/class titlepg htm 1 http://www.fws.gov/nwi/Pubs_Reports/Class_Manual/class_titlepg.htm
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Classification of Wetlands and Deepwater Habitats of the ... · •Wetlands: Lands transitional between terrestrial & aquatic systems where the water table is usually at or near the
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Classification of Wetlandsand Deepwater Habitats
of the United Statesof the United States
Website for the Manual:http://www fws gov/nwi/Pubs Reports/Class Manual/class titlepg htm
• Wetlands: Lands transitional between terrestrial & aquatic systems where the water table is usually at or near the ysurface or the land is covered by shallow water
• Must have one or more of the following:– hydrophytic vegetation– hydrophytic vegetation– undrained hydric soil
nonsoil and saturated or covered by– nonsoil and saturated or covered by shallow water
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• Deepwater habitats: Permanently• Deepwater habitats: Permanently flooded lands lying below the deepwater boundary of wetlandsboundary of wetlands.
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Deepwater UplandWetland
• Coastal shelf Marine & Estuarine •Edge of land with •elevation of extreme low water of spring tide
Lacustrine and Riverine
predominantly hydrophytic cover oredge of hydric soilLacustrine and Riverine
• 2 meters below low water or deepwater edge
edge of hydric soil or edge of flooded/saturated l d
• Lack of basic ecological data• Lack of basic ecological data
• Limitations of remote sensingLimitations of remote sensing
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“One of the most comprehensive and widely applauded wetland classification systems is that developed for the USA by Cowardin et al (1979) ” Finlayson & van der Valk 1995
“...for ecological studies and inventories the 1979 USFWS f
by Cowardin et al. (1979). Finlayson & van der Valk 1995
definition has been and should continue to be applied to wetlands in the US.” Mitsch & Gosselink 1993
“Despite undisputed problems, we believe that the classification has met its stated objectives.” Cowardin &