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Select an ecological site
Select an ecological site using the list, keys, photos, briefcase, or quick search option located on this page. -
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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 7 of 7
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Key Characteristics
- Site receives additional moisture from surrounding landscape (flood plains, toe slopes, foot slopes and low terraces).
- Soils formed in alluvium derived from sandstone, siltstone, and shale. Soils are well drained.
- Occurs on terraces (toe slopes and lower foot slopes comprising treads and risers on stream terraces).
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i
Key Characteristics
- Site receives additional moisture from surrounding landscape (flood plains, toe slopes, foot slopes and low terraces).
- Soils formed in alluvium derived from sandstone, siltstone, and shale. Soils are well drained.
- Occurs on flood plains (toe slopes comprising flood plains along creeks and small streams draining highly dissected uplands).
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i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape (upland landforms including high terraces, toe slopes, benches, summits, shoulders and backslopes of interfluves, hills, and mountains).
- Soils formed in residuum or residuum/colluvium. Occurs on summits, shoulders and backslopes of interfluves, hills, and mountains.
- Soils are moderately deep to very deep (greater than 50 cm to a restrictive layer).
- Soils have a fine (35 to 60 percent clay) texture in particle size control section.
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i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape (upland landforms including high terraces, toe slopes, benches, summits, shoulders and backslopes of interfluves, hills, and mountains).
- Soils formed in alluvium, colluvium, and residuum from siltstone and shale. Soils are moderately well drained, somewhat poorly drained, or poorly drained.
- Occurs on level to depressional uplands or terraces on toe slopes with a fine (35-60 percent clay) texture in the particle size control section.
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i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape (upland landforms including high terraces, toe slopes, benches, summits, shoulders and backslopes of interfluves, hills, and mountains).
- Soils formed in residuum or residuum/colluvium. Occurs on summits, shoulders and backslopes of interfluves, hills, and mountains.
- Soils are moderately deep to very deep (greater than 50 cm to a restrictive layer).
- Soils have a fine loamy or loamy (18 to 35 percent clay) texture in particle size control section.
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i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape (upland landforms including high terraces, toe slopes, benches, summits, shoulders and backslopes of interfluves, hills, and mountains).
- Soils formed in residuum or residuum/colluvium. Occurs on summits, shoulders and backslopes of interfluves, hills, and mountains.
- Soils are very shallow to shallow (less than 50 cm to restrictive layer, usually hard bedrock).
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i
Key Characteristics
- Site does not receive additional moisture from the surrounding landscape (upland landforms including high terraces, toe slopes, benches, summits, shoulders and backslopes of interfluves, hills, and mountains).
- Soils formed in alluvium, colluvium, and residuum from siltstone and shale. Soils are moderately well drained, somewhat poorly drained, or poorly drained.
- Occurs on benches and high terraces, on toe slopes and foot slopes, has a fine loamy or loamy (18-35 percent clay) texture in the particle size control section, and a restrictive layer.
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
MLRA 117X ES Key
1-
Site receives additional moisture from surrounding landscape (flood plains, toe slopes, foot slopes and low terraces).
A.
Soils formed in alluvium derived from sandstone, siltstone, and shale. Soils are well drained.
1-
Occurs on flood plains (toe slopes comprising flood plains along creeks and small streams draining highly dissected uplands).
... NX117X01Y030 – Flood Plain
2-
Occurs on terraces (toe slopes and lower foot slopes comprising treads and risers on stream terraces).
... NX117X01Y029 – Terrace
2-
Site does not receive additional moisture from the surrounding landscape (upland landforms including high terraces, toe slopes, benches, summits, shoulders and backslopes of interfluves, hills, and mountains).
A.
Soils formed in alluvium, colluvium, and residuum from siltstone and shale. Soils are moderately well drained, somewhat poorly drained, or poorly drained.
1-
Occurs on benches and high terraces, on toe slopes and foot slopes, has a fine loamy or loamy (18-35 percent clay) texture in the particle size control section, and a restrictive layer.
... NX117X01Y035 – Seasonally Wet Loamy Upland
2-
Occurs on level to depressional uplands or terraces on toe slopes with a fine (35-60 percent clay) texture in the particle size control section.
... NX117X01Y032 – Seasonally Wet Clayey Upland
B.
Soils formed in residuum or residuum/colluvium. Occurs on summits, shoulders and backslopes of interfluves, hills, and mountains.
1-
Soils are very shallow to shallow (less than 50 cm to restrictive layer, usually hard bedrock).
... NX117X01Y034 – Shallow Upland
2-
Soils are moderately deep to very deep (greater than 50 cm to a restrictive layer).
i.
Soils have a fine loamy or loamy (18 to 35 percent clay) texture in particle size control section.
... NX117X01Y033 – Loamy Upland
ii.
Soils have a fine (35 to 60 percent clay) texture in particle size control section.
... NX117X01Y031 – Clayey Upland
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.
