Natural Resources
Conservation Service

Ecological site R053BY018ND

Linear Meadow

Last updated: 1/11/2024
Accessed: 12/22/2024

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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.

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Figure 1. Mapped extent

Areas shown in blue indicate the maximum mapped extent of this ecological site. Other ecological sites likely occur within the highlighted areas. It is also possible for this ecological site to occur outside of highlighted areas if detailed soil survey has not been completed or recently updated.

Classification relationships

Level IV Ecoregions of the Conterminous United States: 42a – Missouri Coteau; 42b – Collapsed Glacial Outwash; 42c – Missouri Coteau Slope; 42d – Northern Missouri Coteau; 42f – Southern Missouri Coteau Slope; 42g – Ponca Plains; and 42h – Southern River Breaks.

Associated sites

R053BY004ND	Limy Subirrigated
R053BY005ND	Loamy Overflow
R053BY006ND	Saline Lowland
R053BY012ND	Subirrigated
R053BY019ND	Wet Meadow

Similar sites

R053BY019ND	Wet Meadow [Poorly drained soils found adjacent to streams or in depressions, with water table at the surface or within 1.5 feet from the surface with no evidence of salts, noticeable redoximorphic features within 6 inches or just below the organic soil layer. Found upslope from Wet Land and downslope of Subirrigated or Loamy Overflow sites; can be located within the listed associated sites. Indicator species are prairie cordgrass, northern reedgrass and no shrub. This site has less production, far less slough sedge and far more prairie cordgrass, and a water table is present yearlong.]
R053BY025ND	Shallow Marsh [This site also ponds, and has a water table similar to the Wet Land site for portions of the year. However, this site will normally dry out each year sufficiently that agricultural operations such as haying are feasible in most years. This site typically occurs in larger, isolated concave positions. Indicator species: dominated by whitetop and sedges, with lesser amounts of prairie cordgrass, bulrush and spikerush. This site has similar species as the Wet Land site, but more whitetop, slightly more sedges, and higher production.]

R053BY019ND

Wet Meadow

[Poorly drained soils found adjacent to streams or in depressions, with water table at the surface or within 1.5 feet from the surface with no evidence of salts, noticeable redoximorphic features within 6 inches or just below the organic soil layer. Found upslope from Wet Land and downslope of Subirrigated or Loamy Overflow sites; can be located within the listed associated sites. Indicator species are prairie cordgrass, northern reedgrass and no shrub. This site has less production, far less slough sedge and far more prairie cordgrass, and a water table is present yearlong.]

R053BY025ND

Shallow Marsh

[This site also ponds, and has a water table similar to the Wet Land site for portions of the year. However, this site will normally dry out each year sufficiently that agricultural operations such as haying are feasible in most years. This site typically occurs in larger, isolated concave positions. Indicator species: dominated by whitetop and sedges, with lesser amounts of prairie cordgrass, bulrush and spikerush. This site has similar species as the Wet Land site, but more whitetop, slightly more sedges, and higher production.]

Table 1. Dominant plant species

Tree	Not specified
Shrub	Not specified
Herbaceous	(1) Scolochloa festucacea (2) Carex atherodes

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Physiographic features

This site occurs on concave or level to gently sloping low lying positions.

Table 2. Representative physiographic features

Landforms	(1) Lake plain (2) Depression (3) Drainageway
Flooding duration	Long (7 to 30 days)
Flooding frequency	None to frequent
Ponding duration	Long (7 to 30 days) to very long (more than 30 days)
Ponding frequency	Occasional to frequent
Elevation	488 – 610 m
Slope	0 – 2%
Ponding depth	0 – 61 cm
Water table depth	0 – 15 cm
Aspect	Aspect is not a significant factor

Climatic features

MLRA 53B is considered to have a continental climate – cold winters and hot summers, low humidity, light rainfall, and much sunshine. Extremes in temperature are characteristic. The climate is the result of this MLRA’s location in the geographic center of North America. There are few natural barriers on the northern Great Plains. The air masses move unobstructed across the plains and account for rapid changes in temperature.

Annual precipitation ranges from 15 to 20 inches per year. The normal average annual temperature is about 41° F. January is the coldest month with average temperatures ranging from about 4° F (Powers Lake, ND) to about 10° F (Pollock, SD). July is the warmest month with temperatures averaging from about 67° F (Powers Lake, ND) to about 72° F (Pollock, SD). The range of normal average monthly temperatures between the coldest and warmest months is about 62° F. This large annual range attests to the continental nature of this MLRA's climate. Winds average about 11 miles per hour annually, ranging from about 13 miles per hour during the spring to about 10 miles per hour during the summer. Daytime winds are generally stronger than nighttime and occasional strong storms may bring brief periods of high winds with gusts to more than 50 miles per hour.

Growth of native cool-season plants begins in late March and continues to early to mid July. Native warm-season plants begin growth in mid May and continue to the end of August. Green up of cool-season plants can occur in September and October when adequate soil moisture is present.

Table 3. Representative climatic features

Frost-free period (average)	135 days
Freeze-free period (average)	156 days
Precipitation total (average)	508 mm

Bar

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Figure 2. Monthly precipitation range

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Figure 3. Monthly average minimum and maximum temperature

Soil features

These are very deep, very poorly drained, coarse to fine textured soils. Salinity and sodicity are none to slight. Water tables on this site range from 2 feet above to 1/2 foot below the surface during most of the growing season. This site is in deep depressions on lake plains and drainageways. Slope ranges from 0 to 2 percent. This site should show no evidence of rills, wind scoured areas or pedestalled plants. The soil surface is stable and intact. Sub-surface soil layers are non-restrictive to water movement and root penetration.

These soils are not susceptible to water erosion. Ponded water conditions and slow permeability strongly influences the soil-water-plant relationship.

Major soil series correlated to this ecological site can be found in Section II of the Natural Resources Conservation Service Field Office Technical Guide or the following web sites:
http://www.nrcs.usda.gov/technical/efotg/

Table 4. Representative soil features

Surface texture	(1) Silt loam (2) Silty clay loam (3) Silty clay
Family particle size	(1) Loamy
Drainage class	Poorly drained
Permeability class	Very slow to moderate
Soil depth	203 cm
Surface fragment cover <=3"	0 – 5%
Surface fragment cover >3"	0%
Calcium carbonate equivalent (0-101.6cm)	0 – 45%
Electrical conductivity (0-101.6cm)	0 – 4 mmhos/cm
Sodium adsorption ratio (0-101.6cm)	0 – 2
Soil reaction (1:1 water) (0-101.6cm)	6.1 – 8.4
Subsurface fragment volume <=3" (Depth not specified)	0 – 10%
Subsurface fragment volume >3" (Depth not specified)	0%

Ecological dynamics

The site developed under Northern Great Plains climatic conditions, and included natural influence of large herbivores, occasional fire and yearly flooding events. Changes will occur in the plant communities due to management actions and/or climatic conditions. Due to the nature of the soils, the site is considered highly variable but very stable. Under continued adverse impacts, a slow decline in vegetative vigor and composition will occur. Under favorable vegetative management treatments the site can rapidly recover to the Historic Climax Plant Community (HCPC). High variability of ponding levels and duration is the major cause of the fluctuating plant community. However, management can greatly influence the plant community dynamics during extended drought periods.

The plant community upon which interpretations are primarily based is the Historic Climax Plant Community under normal precipitation periods. The HCPC has been determined by study of rangeland relic areas, areas protected from excessive disturbance, and areas under long-term rotational grazing regimes. Trends in plant community dynamics ranging from heavily grazed to lightly grazed areas, seasonal use pastures, and historical accounts also have been used.

Continuous grazing without adequate recovery opportunities between grazing events over several years will cause this site to depart from the HCPC. Species such as reed canarygrass, spikerush and Baltic rush will increase in frequency and density. Non-use (rest) and lack of fire will cause litter levels and plant decadence/mortality to increase. Cattails are greatly influenced by the fluctuating water regime.

The following is a diagram that illustrates the common plant communities that can occur on the site and the transition pathways between communities. The ecological processes will be discussed in more detail in the plant community descriptions following the diagram.

State and transition model

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Standard diagram

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Click on state and transition labels to scroll to the respective text

State 1
Slough Sedge/Whitetop/Sloughgrass/Smartweed (HCPC)

Community 1.1
Slough Sedge/Whitetop/Sloughgrass/Smartweed (HCPC)

This is the interpretive plant community and is considered to be the Historic Climax Plant Community (HCPC). This plant community evolved with grazing by large herbivores, infrequent wild fires and periodic flooding events and is suited for grazing by domestic livestock. This plant community can be found on areas that are grazed and where the grazed plants receive adequate periods of rest during the growing season in order to recover. Historically, fires occurred infrequently. The potential vegetation is about 40% grasses, 40% grass-likes, and 20% forbs. The major grasses and grass-likes include whitetop, American sloughgrass, slough sedge, mannagrass, woolly sedge and spikerush. Key forbs include smartweeds, western dock and aster. The plant community is well adapted to the Northern Great Plains climatic conditions. It is a critical plant community, providing water and habitat for the surrounding area. The diversity in plant species provides a variety of habitats for wildlife. It is resistant to drought due to a dependable water supply. This is a sustainable plant community (soil stability, watershed function, and biologic integrity).

Figure 4. Annual production by plant type (representative values) or group (midpoint values)

Table 5. Annual production by plant type

Plant type	Low (kg/hectare)	Representative value (kg/hectare)	High (kg/hectare)
Grass/Grasslike	2634	3699	4147
Shrub/Vine	1569	2186	2802
Forb	280	841	1457
Total	4483	6726	8406

Figure 5. Plant community growth curve (percent production by month). ND5307, Missouri Coteau, cool-season dominant, warm-season sub-dominant.. Cool-season dominant, warm-season sub-dominant, lowland..

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
J	F	M	A	M	J	J	A	S	O	N	D
0	0	2	7	36	35	10	3	6	1	0	0

State 2
Reed Canarygrass/Smartweed/Baltic Rush/Cattail

Community 2.1
Reed Canarygrass/Smartweed/Baltic Rush/Cattail

This plant community develops from sedimentation occurring after a ponding or flooding event. When compared to the Historical Climax Plant Community, whitetop, prairie cordgrass, slough sedge, and northern reedgrass, have decreased. Reed canarygrass, spikerush, low-growing sedges, Baltic rush and cattails have increased. The abundant production and proximity to water make this plant community important for livestock and wildlife such as birds, mule deer, and antelope. The plant community is stable and protected from excessive erosion. The biotic integrity of this plant community is usually intact. The watershed is usually functioning.

Figure 6. Annual production by plant type (representative values) or group (midpoint values)

Table 6. Annual production by plant type

Plant type	Low (kg/hectare)	Representative value (kg/hectare)	High (kg/hectare)
Grass/Grasslike	1905	2802	3699
Shrub/Vine	1569	1961	2354
Forb	448	841	1233
Total	3922	5604	7286

Figure 7. Plant community growth curve (percent production by month). ND5306, Missouri Coteau, lowland cool-season dominant.. Cool-season dominant, lowland..

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
J	F	M	A	M	J	J	A	S	O	N	D
0	0	3	10	37	35	5	2	8	0	0	0

State 3
Slough Sedge/Smartweed/Spikerush/Baltic Rush

Community 3.1
Slough Sedge/Smartweed/Spikerush/Baltic Rush

This plant community developed with continuous grazing without adequate recovery periods between grazing events. Whitetop, mannagrass, prairie cordgrass and northern reedgrass have been reduced when compared to the HCPC. The plant community becomes dominated by grass-likes and forbs such as slough sedge, spikerush, Baltic rush, smartweed and curly dock. Annual grasses like American sloughgrass and short-lived perennials such as foxtail barley will increase. Quackgrass can invade on drier portions of the community. Areas of bare ground begin to appear throughout the site. A significant amount of production and diversity has been lost when compared to the HCPC. Loss or reduction of native grasses, grass-likes and forbs has negatively impacted energy flow and nutrient cycling. It will take a relatively long time to restore this plant community back to the HCPC with improved management.

Figure 8. Annual production by plant type (representative values) or group (midpoint values)

Table 7. Annual production by plant type

Plant type	Low (kg/hectare)	Representative value (kg/hectare)	High (kg/hectare)
Shrub/Vine	1838	2152	2690
Forb	1065	1345	2242
Grass/Grasslike	796	1883	2130
Total	3699	5380	7062

Figure 9. Plant community growth curve (percent production by month). ND5306, Missouri Coteau, lowland cool-season dominant.. Cool-season dominant, lowland..

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
J	F	M	A	M	J	J	A	S	O	N	D
0	0	3	10	37	35	5	2	8	0	0	0

Additional community tables

Table 8. Community 1.1 plant community composition

Group	Common name	Symbol	Scientific name	Annual production (kg/hectare)	Foliar cover (%)
Grass/Grasslike
1	Grasses			1345–2690
	common rivergrass	SCFE	Scolochloa festucacea	1009–1681	–
	mannagrass	GLYCE	Glyceria	135–673	–
	American sloughgrass	BESY	Beckmannia syzigachne	336–673	–
	northern reedgrass	CASTI3	Calamagrostis stricta ssp. inexpansa	0–202	–
	reed canarygrass	PHAR3	Phalaris arundinacea	0–202	–
	prairie cordgrass	SPPE	Spartina pectinata	0–202	–
	Grass, perennial	2GP	Grass, perennial	0–135	–
2	Grass-Likes			1681–2690
	wheat sedge	CAAT2	Carex atherodes	1009–2354	–
	Grass-like (not a true grass)	2GL	Grass-like (not a true grass)	67–673	–
	woolly sedge	CAPE42	Carex pellita	135–471	–
	spikerush	ELEOC	Eleocharis	67–336	–
	chairmaker's bulrush	SCAM6	Schoenoplectus americanus	67–336	–
Forb
3	Forbs			336–1345
	water knotweed	POAM8	Polygonum amphibium	202–1009	–
	bur-reed	SPARG	Sparganium	67–538	–
	northern water plantain	ALTR7	Alisma triviale	67–471	–
	Forb, perennial	2FP	Forb, perennial	0–336	–
	hemlock waterparsnip	SISU2	Sium suave	67–202	–
	duckweed	LEMNA	Lemna	67–202	–
	buttercup	RANUN	Ranunculus	0–135	–
	western dock	RUAQ	Rumex aquaticus	0–135	–
	arumleaf arrowhead	SACU	Sagittaria cuneata	0–135	–
	broadleaf cattail	TYLA	Typha latifolia	0–67	–

Table 9. Community 2.1 plant community composition

Group	Common name	Symbol	Scientific name	Annual production (kg/hectare)	Foliar cover (%)
Grass/Grasslike
1	Grasses			1681–2242
	reed canarygrass	PHAR3	Phalaris arundinacea	1121–1681	–
	quackgrass	ELRE4	Elymus repens	0–1121	–
	American sloughgrass	BESY	Beckmannia syzigachne	280–560	–
	Grass, annual	2GA	Grass, annual	0–280	–
	mannagrass	GLYCE	Glyceria	0–280	–
	foxtail barley	HOJU	Hordeum jubatum	56–280	–
	barnyardgrass	ECCR	Echinochloa crus-galli	56–280	–
	common rivergrass	SCFE	Scolochloa festucacea	56–280	–
	Grass, perennial	2GP	Grass, perennial	0–112	–
	northern reedgrass	CASTI3	Calamagrostis stricta ssp. inexpansa	0–56	–
2	Grass-Likes			1681–2242
	spikerush	ELEOC	Eleocharis	560–1401	–
	Grass-like (not a true grass)	2GL	Grass-like (not a true grass)	56–841	–
	woolly sedge	CAPE42	Carex pellita	112–560	–
	chairmaker's bulrush	SCAM6	Schoenoplectus americanus	112–448	–
	wheat sedge	CAAT2	Carex atherodes	56–280	–
Forb
3	Forbs			560–1121
	broadleaf cattail	TYLA	Typha latifolia	280–1121	–
	water knotweed	POAM8	Polygonum amphibium	112–560	–
	curly dock	RUCR	Rumex crispus	56–448	–
	northern water plantain	ALTR7	Alisma triviale	56–392	–
	Forb, annual	2FA	Forb, annual	0–280	–
	Forb, perennial	2FP	Forb, perennial	0–280	–
	bur-reed	SPARG	Sparganium	56–280	–
	western dock	RUAQ	Rumex aquaticus	0–168	–
	duckweed	LEMNA	Lemna	56–168	–
	buttercup	RANUN	Ranunculus	0–112	–
	hemlock waterparsnip	SISU2	Sium suave	0–112	–
	arumleaf arrowhead	SACU	Sagittaria cuneata	0–56	–

Table 10. Community 3.1 plant community composition

Group	Common name	Symbol	Scientific name	Annual production (kg/hectare)	Foliar cover (%)
Grass/Grasslike
1	Grasses			538–1345
	American sloughgrass	BESY	Beckmannia syzigachne	269–807	–
	quackgrass	ELRE4	Elymus repens	0–807	–
	foxtail barley	HOJU	Hordeum jubatum	54–538	–
	reed canarygrass	PHAR3	Phalaris arundinacea	54–269	–
	barnyardgrass	ECCR	Echinochloa crus-galli	54–269	–
	Grass, annual	2GA	Grass, annual	0–269	–
	Grass, perennial	2GP	Grass, perennial	0–108	–
2	Grass-Likes			1883–2421
	spikerush	ELEOC	Eleocharis	538–1345	–
	Grass-like (not a true grass)	2GL	Grass-like (not a true grass)	54–807	–
	wheat sedge	CAAT2	Carex atherodes	269–807	–
	chairmaker's bulrush	SCAM6	Schoenoplectus americanus	108–538	–
	woolly sedge	CAPE42	Carex pellita	54–430	–
Forb
3	Forbs			1076–1614
	curly dock	RUCR	Rumex crispus	538–1076	–
	water knotweed	POAM8	Polygonum amphibium	108–807	–
	western dock	RUAQ	Rumex aquaticus	0–269	–
	Forb, annual	2FA	Forb, annual	0–269	–
	Forb, perennial	2FP	Forb, perennial	0–269	–
	northern water plantain	ALTR7	Alisma triviale	54–269	–
	broadleaf cattail	TYLA	Typha latifolia	0–269	–
	hemlock waterparsnip	SISU2	Sium suave	0–215	–
	bur-reed	SPARG	Sparganium	0–161	–
	duckweed	LEMNA	Lemna	0–54	–

Interpretations

Hydrological functions

Water ponding is the principal factor limiting herbage production on this site. The site is dominated by soils in hydrologic groups C and D. Infiltration varies from moderate to slow and runoff potential for this site is negligible to medium. In many cases, areas with greater than 75% ground cover have the greatest potential for high infiltration and lower runoff. An exception would be where short grasses form a dense sod and dominate the site. Areas where ground cover is less than 50% have the greatest potential to have reduced infiltration and higher runoff (refer to Section 4, NRCS National Engineering Handbook for runoff quantities and hydrologic curves).

Recreational uses

This site provides hunting opportunities for upland and waterfowl game species. The wide variety of plants which bloom from spring until fall have an esthetic value that appeals to visitors.

Wood products

No appreciable wood products are present on the site.

Other products

None noted.

Supporting information

Inventory data references

Information presented here has been derived from NRCS clipping and other inventory data. Also, field knowledge of range-trained personnel was used. All descriptions were peer reviewed and/or field-tested by various private, state and federal agency specialists. Those involved in developing this site description include: Stan Boltz, NRCS Range Management Specialist; Michael D. Brand, State Land Dept., Director Surface Management; David Dewald, NRCS State Biologist; Paul Drayton, NRCS District Conservationist; Jody Forman, NRCS Range Management Specialist; Dennis Froemke, NRCS Range Management Specialist; Jeff Printz, NRCS State Range Management Specialist; Josh Saunders, NRCS Range Management Specialist; Kevin Sedivec, Extension Rangeland Management Specialist; Darrell Vanderbusch, NRCS Resource Soil Scientist; and Lee Voigt, NRCS Range Management Specialist.
Data Source Number of Records Sample Period State County
SCS-RANGE-417 2 1968 – 1969 ND Burke

Other references

High Plains Regional Climate Center, University of Nebraska, 830728 Chase Hall, Lincoln, NE 68583-0728. (http://hprcc.unl.edu)
USDA, NRCS. National Water and Climate Center, 101 SW Main, Suite 1600, Portland, OR 97204-3224. (http://www.wcc.nrcs.usda.gov)
USDA, NRCS. National Range and Pasture Handbook, September 1997
USDA, NRCS. National Soil Information System, Information Technology Center, 2150 Centre Avenue, Building A, Fort Collins, CO 80526. (http://nasis.nrcs.usda.gov)
USDA, NRCS. 2001. The PLANTS Database, Version 3.1 (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
USDA, NRCS, Various Published Soil Surveys.
USDI Fish and Wildlife Service. 1971. Classification of Natural Ponds and Lakes in the Glaciated Prairie Region. Resource Publication 92.

Contributors

Jeff Printz/Stan Boltz

Approval

Suzanne Mayne-Kinney, 1/11/2024

Rangeland health reference sheet

Interpreting Indicators of Rangeland Health is a qualitative assessment protocol used to determine ecosystem condition based on benchmark characteristics described in the Reference Sheet. A suite of 17 (or more) indicators are typically considered in an assessment. The ecological site(s) representative of an assessment location must be known prior to applying the protocol and must be verified based on soils and climate. Current plant community cannot be used to identify the ecological site.

Author(s)/participant(s)
Contact for lead author
Date	12/22/2024
Approved by	Suzanne Mayne-Kinney
Approval date
Composition (Indicators 10 and 12) based on	Annual Production

Indicators

Number and extent of rills:
Presence of water flow patterns:
Number and height of erosional pedestals or terracettes:
Bare ground from Ecological Site Description or other studies (rock, litter, lichen, moss, plant canopy are not bare ground):
Number of gullies and erosion associated with gullies:
Extent of wind scoured, blowouts and/or depositional areas:
Amount of litter movement (describe size and distance expected to travel):
Soil surface (top few mm) resistance to erosion (stability values are averages - most sites will show a range of values):
Soil surface structure and SOM content (include type of structure and A-horizon color and thickness):
Effect of community phase composition (relative proportion of different functional groups) and spatial distribution on infiltration and runoff:
Presence and thickness of compaction layer (usually none; describe soil profile features which may be mistaken for compaction on this site):
Functional/Structural Groups (list in order of descending dominance by above-ground annual-production or live foliar cover using symbols: >>, >, = to indicate much greater than, greater than, and equal to):

Dominant:

Sub-dominant:

Other:

Additional:
Amount of plant mortality and decadence (include which functional groups are expected to show mortality or decadence):
Average percent litter cover (%) and depth ( in):
Expected annual annual-production (this is TOTAL above-ground annual-production, not just forage annual-production):
Potential invasive (including noxious) species (native and non-native). List species which BOTH characterize degraded states and have the potential to become a dominant or co-dominant species on the ecological site if their future establishment and growth is not actively controlled by management interventions. Species that become dominant for only one to several years (e.g., short-term response to drought or wildfire) are not invasive plants. Note that unlike other indicators, we are describing what is NOT expected in the reference state for the ecological site:
Perennial plant reproductive capability:

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Natural ResourcesConservation Service

Ecological site R053BY018ND

Linear Meadow

Last updated: 1/11/2024 Accessed: 12/22/2024

General information

Figure 1. Mapped extent

Classification relationships

Associated sites

Similar sites

Table 1. Dominant plant species

Ecosystem states

State 1 submodel, plant communities

State 2 submodel, plant communities

State 3 submodel, plant communities

Natural Resources
Conservation Service

Last updated: 1/11/2024
Accessed: 12/22/2024