Natural Resources
Conservation Service
Ecological site R102DY037SD
Deep Marsh
Last updated: 8/14/2024
Accessed: 11/14/2024
General information
Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.
MLRA notes
Major Land Resource Area (MLRA): 102D–Prairie Coteau
This area makes up about 7,867 square miles (20,375 square kilometers), consisting mostly of nearly level to undulating till plains with potholes and moraines. Elevation ranges from 1,150 to 2,130 feet (350 to 650 meters). The average annual precipitation is 22 to 29 inches (559 to 734 millimeters). The average annual temperature is 42 to 45 degrees F (6 to 7 degrees C). The dominant soil order in this MLRA is Mollisols. The soils in this area dominantly have a frigid temperature regime, and an aquic or udic moisture regime. They are generally very deep and loamy. Soils range from well drained to very poorly drained. Parent materials are dominantly fine-loamy till to clayey material, with smaller amounts of outwash, glaciofluvial deposits, eolian deposits, alluvium, and, to a lesser extent, loess and organic materials.
Classification relationships
*Fenneman (1916) Physiographic Regions*
Division - Interior Plains
East:
Province - Central Lowland
Section - Western Lake / Dissected Till Plains (12b/12e)
*USFS (2007) Ecoregions*
Domain - Humid Temperate
Division - Prairie
Province - Prairie Parkland (Temperate)
Section - North-Central Glaciated Plains (251B)
*EPA Ecoregions (Omernik 1997)*
I - Great Plains (9)
II - Temperate Prairies (9.2)
III - Aspen Parkland/Northern Glaciated Plains (9.2.1)
Ecological site concept
The Deep Marsh Ecological Site typically represents the central portion of a wetland basin or depression on a glaciated prairie landscape with standing water up to 5 feet deep, and at least some tall, emergent vegetation like cattails, bulrushes and reeds. In most years there is at least some standing water but in drought years the basin surface may dry out yet retain groundwater within 1 foot of the surface.
Associated sites
R102DY001SD |
Shallow Marsh These sites occur in a basin or closed depression. Soils are very poorly drained and the site will pond water until early summer in most years. |
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R102DY010SD |
Loamy These sites occur on upland areas. The soils are well drained and have less than 40 percent clay in the surface and subsoil. |
R102DY002SD |
Linear Meadow These sites occur in drainageways or along the edges of closed depressions. Soils are poorly and very poorly drained which have a water table within 0 to 2 feet of the soil surface that persists longer than the wettest part of the growing season typically until the month of August. |
R102DY006SD |
Limy Subirrigated These sites occur along the edges of drainageways. Soils are somewhat poorly drained which have a water table within 2 to 5 feet of the soil surface that persists longer than the wettest part of the growing season typically until the month of August. Soils will effervesce with acid at or near the surface. |
Similar sites
R102DY001SD |
Shallow Marsh The Shallow Marsh site is in a similar landscape position, but the site ponds water until early summer in most years. The Shallow Marsh site will have none to very little cattails and more prairie cordgrass than a Deep Marsh site. |
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Table 1. Dominant plant species
Tree |
Not specified |
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Shrub |
Not specified |
Herbaceous |
(1) Typha latifolia |
Click on box and path labels to scroll to the respective text.
Ecosystem states
T1A | - | Species invasion, flooding, and drought |
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T1B | - | Drought and tillage |
T1C | - | Drainage |
T2A | - | Deep water or drought, prescribed grazing, prescribed burning, time |
T2B | - | Time and drought |
T2C | - | Drought and drainage |
T3A | - | Non-use, flooding, invasive encroachment/seeding |
R4A | - | Renovation/restoration |
State 1 submodel, plant communities
1.1A | - | Excessive flooding, herbivory activity |
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1.2A | - | Drought |
1.3A | - | Normal precipitation and time |
1.4A | - | Return to normal precipitation patterns & time |
State 2 submodel, plant communities
2.1A | - | Deep water, herbivory, prescribed grazing, and/or flooding |
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2.2A | - | Drought |
2.3A | - | Normal precipitation and time |
2.4A | - | Time |