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1
Select an ecological site
Select an ecological site using the list, keys, photos, briefcase, or quick search option located on this page. -
2
Explore the ecological site description
Next, learn more about the selected ecological site and its characteristic dynamics by browsing the ecological site description and exploring alternative state and transition model formats.
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Viewing 18 of 18
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-
i
Key Characteristics
- OTHER Landscape Positions (Basin, Depression, Run-off and/or Run-in)
- Is it not Organic?
- Not as Above.
- Area in a basin or closed depression with no outlet?
- Not as above.
- Site pond water until early summer and have high organic matter content?
-
i
Key Characteristics
- RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
- Is it not Organic?
- Evidence of a permanent water table within 0-2 feet of the surface and the site dominated by hydrophytes?
- Not as above.
-
i
Key Characteristics
- RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
- Is it not Organic?
- Not as above.
- Evidence of a permanent water table within 2 to 5 feet of the surface?
- Not as above.
-
i
Key Characteristics
- OTHER Landscape Positions (Basin, Depression, Run-off and/or Run-in)
- Is it not Organic?
- Not as Above.
- Area in a basin or closed depression with no outlet?
- Site pond water for 4 to 8 weeks in the spring or after heavy rain and have high organic matter content?
-
i
Key Characteristics
- RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
- Is it not Organic?
- Not as above.
- Evidence of a permanent water table within 2 to 5 feet of the surface?
- Soil effervesce with acid at or near the surface or have visible salt (including sodium and gypsum) crystals within 6 inches?
- Not as above.
-
i
Key Characteristics
- RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
- Is it not Organic?
- Evidence of a permanent water table within 0-2 feet of the surface and the site dominated by hydrophytes?
- Visible salts (including sodium and gypsum) within 16 inches of the surface?
-
i
Key Characteristics
- NORMAL Landscape Positions (Upland, slopes normally linear, except sandy/sands sites can have complex slopes)
- Is it not Organic?
- Not as above.
- Not as above
- Not as above
- Is the surface and subsoil texture Sandy loam, Fine sandy loam, Loamy very fine sand?
-
i
Key Characteristics
- RUN-OFF Landscape Positions (upland, normally convex short slopes)
- It it not Organic?
- Not as above
- Root restricting layer within 10-20 inches of soil surface?
- Bedrock (siltstone, sandstone, mudstone, etc)
- NORMAL Landscape Positions (Upland, slopes normally linear, except sandy/sands sites can have complex slopes)
- Is it not Organic?
- Not as above.
- Not as above
- Is the surface and subsoil texture - Loam, Silt loam, Silty clay loam, Clay loam, Sandy clay loam, very fine sandy loam?
-
i
Key Characteristics
- NORMAL Landscape Positions (Upland, slopes normally linear, except sandy/sands sites can have complex slopes)
- Is it not Organic?
- Not as above.
- Is the surface and subsoil texture - Clay, Silty Clay (>40% clay) or Loamy Surface with Clayey subsoil the surface and subsoil texture?
-
i
Key Characteristics
- RUN-OFF Landscape Positions (upland, normally convex short slopes)
- It it not Organic?
- Not as above
- Not as above.
- Soil effervesce with acid (10% HCL) at or near (within 6 inches) the surface?
-
i
Key Characteristics
- OTHER Landscape Positions (Basin, Depression, Run-off and/or Run-in)
- Is it not Organic?
- Does the soil have a claypan (columnar structure) within 16 inches?
- Claypan between 6 to 16 inches in depth.
-
i
Key Characteristics
- RUN-OFF Landscape Positions (upland, normally convex short slopes)
- It it not Organic?
- Not as above
- Root restricting layer within 10-20 inches of soil surface?
- Gravel (greater than 15% by volume)
-
i
Key Characteristics
- OTHER Landscape Positions (Basin, Depression, Run-off and/or Run-in)
- Is it not Organic?
- Does the soil have a claypan (columnar structure) within 16 inches?
- Is the claypan within 6 inches of the surface?
-
i
Key Characteristics
- RUN-OFF Landscape Positions (upland, normally convex short slopes)
- It it not Organic?
- Root restricting layer within 10 inches of soil surface?
-
-
i
Key Characteristics
- RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
- Is it not Organic?
- Not as above.
- Evidence of a permanent water table within 2 to 5 feet of the surface?
- Soil effervesce with acid at or near the surface or have visible salt (including sodium and gypsum) crystals within 6 inches?
- Salts within 16 inches.
-
i
Key Characteristics
- OTHER Landscape Positions (Basin, Depression, Run-off and/or Run-in)
- Is it not Organic?
- Not as Above.
- Area in a basin or closed depression with no outlet?
- Not as above.
- Not as Above.
- Site pond water year round in most years and have high organic matter content?
-
i
Key Characteristics
- RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
- Is it not Organic?
- Not as above.
- No permanent water table within 2 to 5 feet of the surface.
- Water flow into and over/through the site?
- Does it have a flooding frequency?
- RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
- Is it not Organic?
- Not as above.
- No permanent water table within 2 to 5 feet of the surface.
- Water flow into and over/through the site?
- No flooding frequency.
Ecological site map
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Zoom in to display soil survey map units for an area of interest, and zoom out to display MLRAs. Select a map unit polygon to view ecological sites correlated to that map unit. View a brief description of an ecological site by clicking on its name in the map popup. Soil survey correlations may not be accurate, and ecological site classification of a location should always be verified in the field. Each selection may require the transfer of several hundred KB of data.
Ecological site keys
102D
I.
RUN-OFF Landscape Positions (upland, normally convex short slopes)
A.
Is it organic? Yes See MLRA Key "Other Landscape Positions"
B.
It it not Organic?
2
Not as above
i.
Root restricting layer within 10-20 inches of soil surface?
ii.
Not as above.
a.
Soil effervesce with acid (10% HCL) at or near (within 6 inches) the surface?
... R102DY012SD – Thin Upland
b.
Not as above. See MLRA Key "Normal Landscape Positions"
II.
NORMAL Landscape Positions (Upland, slopes normally linear, except sandy/sands sites can have complex slopes)
A.
Is it Organic? Yes See MLRA Key "Other Landscape Positions"
B.
Is it not Organic?
1
Are there visible salts (including sodium and gypsum) within 16 inches or a claypan of the surface? Is there a claypan (columnar structure) within 16 inches of the surface? Yes See MLRA Key "Other Landscape Positions"
2
Not as above.
i.
Is the surface and subsoil texture - Clay, Silty Clay (>40% clay) or Loamy Surface with Clayey subsoil the surface and subsoil texture?
... R102DY011SD – Clayey
ii.
Not as above
a.
Is the surface and subsoil texture - Loam, Silt loam, Silty clay loam, Clay loam, Sandy clay loam, very fine sandy loam?
... R102DY010SD – Loamy
b.
Not as above
1)
Is the surface and subsoil texture Sandy loam, Fine sandy loam, Loamy very fine sand?
... R102DY009SD – Sandy
2)
Not as above - Not Written at this time.
III.
RUN-IN Landscape Positions (Floodplain, Drainageways, etc., except depressions)
A.
Is it Organic? Yes See MLRA Key "Other Landscape Positions"
B.
Is it not Organic?
1
Evidence of a permanent water table within 0-2 feet of the surface and the site dominated by hydrophytes?
i.
Visible salts (including sodium and gypsum) within 16 inches of the surface?
... R102DY007SD – Saline Lowland
2
Not as above.
i.
Evidence of a permanent water table within 2 to 5 feet of the surface?
a.
Soil effervesce with acid at or near the surface or have visible salt (including sodium and gypsum) crystals within 6 inches?
ii.
No permanent water table within 2 to 5 feet of the surface.
a.
Water flow into and over/through the site?
b.
Not as above. See MLRA Key "Other Landscape Positions"
IV.
OTHER Landscape Positions (Basin, Depression, Run-off and/or Run-in)
A.
It is Organic? Not Written at this time.
B.
Is it not Organic?
1
Does the soil have a claypan (columnar structure) within 16 inches?
2
Not as Above.
i.
Area in a basin or closed depression with no outlet?
a.
Site pond water for 4 to 8 weeks in the spring or after heavy rain and have high organic matter content?
... R102DY004SD – Wet Meadow
b.
Not as above.
1)
Site pond water until early summer and have high organic matter content?
... R102DY001SD – Shallow Marsh
2)
Not as Above.
a)
Site pond water year round in most years and have high organic matter content?
... R102DY037SD – Deep Marsh
b)
Not as above - Not written at this time.
ii.
Area not in a basin or closed depression with no outlet? Re-think your position and start again!
Ecological site photos
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Briefcase
Add ecological sites and Major Land Resource Areas to your briefcase by clicking on the briefcase (
) icon wherever it occurs. Drag and drop items to reorder. Cookies are used to store briefcase items between browsing sessions. Because of this, the number of items that can be added to your briefcase is limited, and briefcase items added on one device and browser cannot be accessed from another device or browser. Users who do not wish to place cookies on their devices should not use the briefcase tool. Briefcase cookies serve no other purpose than described here and are deleted whenever browsing history is cleared.
Ecological sites
Major Land Resource Areas
The Ecosystem Dynamics Interpretive Tool is an information system framework developed by the USDA-ARS Jornada Experimental Range, USDA Natural Resources Conservation Service, and New Mexico State University.
