Foothills Fescue Range Plant Community Guide - Sustainable ...

APPENDIX 9.1 Ecological Range Site Definitions
Table 13. Ecological/range sites, with definitions and abbreviated AGRASID
correlations. From McNeil (2003).
ZEcological/ Range Site
Revised Definition AGRASID 3.0 Correlation
Subirrigated Water table is close to surface during Gleyed non-saline medium- to
(Sb)
growing season, but rarely above. coarse-textured soils.
Riparian (Ri) Zone most closely adjacent to stream Any SLM with floodplain or
and river channels. Also known as the stream channel landscape model
lotic zone.
(FP1,FP2, FP3, SC1-l, SC1-h,
SC2, SC3or SC4)
Overflow (Ov) Areas subject to water spreading and Inclined, low relief landscapes
sheetflow. Typically on gentle inclines including fans and aprons; or
or terraces prone to stream overflow. soils developed on fans, aprons or
terraces.
Wetland (WL) Typically low-lying or depressional Non or weakly saline Gleysols or
positions subject to occupation by water Organic soils. OR
ranging from temporary to semi- undifferentiated water bodies
permanent in duration. Also known as (ZWA) with any landscape model
the lentic zone.
except W1, W2 or W3.
Clayey (Cy) Clayey textured soils including silty Fine- and very-fine-textured soil
clay, sandy clay, clay, and heavy clay.
Generally >40% clay.
groups.
Loamy (Lo) Includes loam, silt loam, silt, clay loam, Medium- and moderately-fine
sandy clay loam, and silty clay loam. textured soil groups.
Sandy (Sy) Sandy-loam-textured soils. Moderately coarse soil group.
Limy (Li) Eroded or immature soils with free lime Eroded, Rego and Calcareous
(CaCO3) at the soil surface. Soil pH
generally >7.5.
soils or subgroups.
Sand (Sa) Loamy sand and sand soils, and not with Very-coarse-textured soil group
a duned surface.
and not on duned landscape
models.
Blowouts (BlO) Areas with eroded surface pits reflecting Dominant or Co-dominant
the presence of abundant Solonetzic
(hardpan) soils.
Solonetzic Order Soils.
Choppy Loamy sand and sand soils with a duned Very-coarse-textured soil groups
Sandhills (CS) land surface.
with duned landscape models.
Thin Breaks Areas with bedrock at or near the soil Landscape models I3m and I3h;
(TB)
surface; largely vegetated. May include OR layered, medium, or fine
thin, eroded or immature soils on gentle materials with mas pm of L6, L7,
to steep landscapes.
L8, L16, M5, or F5.
Shallow to Soil with 20 to 50 cm of a sandy or Layered materials denoted by mas
Gravel (SwG) loamy surface overlying a gravel or pm (parent material) codes L4 or
cobble- rich substrate.
L5.
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