| First Approximation Unit |
Disposition in Second Approximation |
|
| Fraser Fir – Red Spruce Forests |
merged with the two following groups into a new SPRUCE-FIR FORESTS group |
| Southern Appalachian Red Spruce Forests |
merged with the preceding and following groups into a new SPRUCE-FIR FORESTS group |
| Central Appalachian Red Spruce Forests |
merged with the two preceding groups into a new SPRUCE-FIR FORESTS group |
Southern Appalachian Grassy Balds |
|
merged with the following group into a new SOUTHERN APPALACHIAN SHRUB AND GRASS BALDS group |
|
| Southern Appalachian Shrub Balds |
merged with the preceding group into a new SOUTHERN APPALACHIAN SHRUB AND GRASS BALDS group |
|
| (not represented) |
a new HIGH-ELEVATION COVE FORESTS group was added to represent high-elevation communities previously included in the Rich Cove and Slope Forests and Acidic Cove Forests groups |
|
merged into the Pine – Oak / Heath Woodlands group |
|
|
name changed to EASTERN HEMLOCK-HARDWOOD FORESTS |
Eastern Arborvitae Slope Forests |
|
name changed to NORTHERN WHITE-CEDAR SLOPE FORESTS |
|
| Montane Oak – Hickory Forests |
Concept broadened and name changed to MONTANE MIXED OAK AND OAK – HICKORY FORESTS |
|
| Mixed Oak / Heath Forests |
merged with the following group into a new OAK / HEATH FORESTS group |
|
|
merged with the preceding group into a new OAK / HEATH FORESTS group |
|
| Montane Acidic Woodlands |
name changed to MOUNTAIN / PIEDMONT ACIDIC WOODLANDS |
|
| Piedmont / Mountain Basic Woodlands |
name changed to MOUNTAIN / PIEDMONT BASIC WOODLANDS |
|
| Acidic Oak-Hickory Woodlands and Savannas |
merged with the following group into a new OAK-HICKORY WOODLANDS AND SAVANNAS group |
|
| Basic Oak-Hickory Woodlands and Savannas |
merged with the preceding group into a new OAK-HICKORY WOODLANDS AND SAVANNAS group |
|
|
merged with the two following groups into a new MOUNTAIN / PIEDMONT CALCAREOUS CLIFFS group. |
|
|
merged with the preceding and following groups into a new MOUNTAIN / PIEDMONT CALCAREOUS CLIFFS group. |
|
Piedmont / Mountain Basic Cliffs |
|
merged with the two preceding groups into a new MOUNTAIN / PIEDMONT CALCAREOUS CLIFFS group. |
|
Piedmont / Mountain Acidic Cliffs |
|
name changed to MOUNTAIN / PIEDMONT ACIDIC CLIFFS |
|
Moss / Lichen Boulderfields |
|
name changed to LICHEN / BRYOPHYTE BOULDERFIELDS |
|
|
name changed to MARITIME DUNE SCRUB |
|
Maritime Evergreen Forests |
|
merged with the two following groups into a new MARITIME UPLAND FORESTS group. |
|
Maritime Loblolly Pine Forests |
|
merged with the preceding and following groups into a new MARITIME UPLAND FORESTS group. |
|
|
merged with the two preceding groups into a new MARITIME UPLAND FORESTS group. |
| Coastal Plain / Piedmont Bottomland Forests |
split into two new groups: COASTAL PLAIN / PIEDMONT FLOODPLAIN FORESTS and COASTAL PLAIN / PIEDMONT SWAMP FORESTS |
Coastal Plain Semipermanent Impoundments |
|
merged with the Piedmont / Mountain Semipermanent Impoundments group into a new SEMIPERMANENT IMPOUNDMENTS group |
Piedmont / Mountain Bottomland Forests |
|
name changed to PIEDMONT / MOUNTAIN FLOODPLAIN FORESTS |
Piedmont / Low Mountain Alluvial Forests |
|
merged with the following group into a new PIEDMONT / MOUNTAIN ALLUVIAL FORESTS group |
|
|
merged with the preceding group into a new PIEDMONT / MOUNTAIN ALLUVIAL FORESTS group |
| Piedmont / Mountain Semipermanent Impoundments |
|
merged with the Coastal Plain Semipermanent Impoundments group into a new SEMIPERMANENT IMPOUNDMENTS group |
| River-Scour Woodlands |
merged into the ROCKY BARS and SHORES Group |
| Montane Basic Seepage Swamps |
name changed to MOUNTAIN / PIEDMONT BASIC SEEPAGE SWAMPS |
|
| High-Elevation Seeps |
concept broadened and name changed to MONTANE WOODLAND SEEPS. |
| Mountain Ponds |
concept broadened and name changed to MONTANE DEPRESSION WETLANDS |
| Shenandoah Valley Sinkhole Ponds |
merged with the former Mountain Ponds group into a broader MONTANE DEPRESSION WETLANDS group |
| Mafic Woodland Seeps |
merged into the Mafic Fens and Seeps group |
|
| Natural Lake Draw-Down Shores |
merged into the Coastal Plain Depression Wetlands group |
|
| Coastal Plain Depression Ponds |
name changed to COASTAL PLAIN DEPRESSION WETLANDS |
|
Non-Riverine Pine-Hardwood Forests |
|
merged with the following group into a new NON-RIVERINE SATURATED FORESTS group |
| Non-Riverine Wet Hardwood Forests |
merged with the preceding group into a new NON-RIVERINE SATURATED FORESTS group |
|
Longleaf Pine and Mixed Pine Flatwoods |
|
deleted; vegetation formerly placed in this group is now considered part of the Pine / Scrub Oak Sandhills group |
|
Coastal Plain Basic Seepage Swamps |
|
name changed to COASTAL PLAIN / PIEDMONT BASIC SEEPAGE SWAMPS |
|
Interdune Wet Pine Woodlands |
|
merged into the Maritime Wet Pine Forests group |
|
Estuarine Fringe Pine Forests |
|
name changed to MARITIME WET PINE FORESTS |
|
| Estuarine Fringe Swamp Forests |
merged into the Tidal Baldcypress Forests and Woodlands group |
