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Ecological site R110XY020IL

Ponded Organic Acidic Peatland

Last updated: 4/22/2020
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.

MLRA notes

Major Land Resource Area (MLRA): 110X–Northern Illinois and Indiana Heavy Till Plain

The Northern Illinois and Indiana Heavy Till Plain (MLRA 110) encompasses the Northeastern Morainal, Grand Prairie, and Southern Lake Michigan Coastal landscapes (Schwegman et al. 1973, WDNR 2015). It spans three states – Illinois (79 percent), Indiana (10 percent), and Wisconsin (11 percent) – comprising about 7,535 square miles (Figure 1). The elevation is about 650 feet above sea level (ASL) and increases gradually from Lake Michigan south. Local relief varies from 10 to 25 feet. Silurian age fractured dolomite and limestone bedrock underlie the region. Glacial drift covers the surface area of the MLRA, and till, outwash, lacustrine deposits, loess or other silty material, and organic deposits are common (USDA-NRCS 2006).

The vegetation in the MLRA has undergone drastic changes over time. At the end of the last glacial episode – the Wisconsinan glaciation – the evolution of vegetation began with the development of tundra habitats, followed by a phase of spruce and fir forests, and eventually spruce-pine forests. Not until approximately 9,000 years ago did the climate undergo a warming trend which prompted the development of deciduous forests dominated by oak and hickory. As the climate continued to warm and dry, prairies began to develop approximately 8,300 years ago. Another shift in climate that resulted in an increase in moisture prompted the emergence of savanna-like habitats from 8,000 to 5,000 years before present (Taft et al. 2009). Forests maintained footholds on steep valley sides, morainal ridges, and wet floodplains. Fire, droughts, and grazing by native mammals helped to maintain the prairies and savannas until the arrival of European settlers, and the forests were maintained by droughts, wind, lightning, and occasional fire (Taft et al. 2009; NatureServe 2018).

Classification relationships

USFS Subregions: Southwestern Great Lakes Morainal (222K) and Central Till Plains and Grand Prairies (251D) Sections; Kenosha-Lake Michigan Plain and Moraines (222Kg), Valparaiso Moraine (Kj), and Eastern Grand Prairie (251Dd) Subsections (Cleland et al. 2007)

U.S. EPA Level IV Ecoregion: Kettle Moraines (53b), Illinois/Indiana Prairies (54a), and Valparaiso-Wheaton Morainal Complex (54f) (USEPA 2013)

National Vegetation Classification – Ecological Systems: Laurentian-Acadian Alkaline Conifer-Hardwood Swamp (CES201.575) (NatureServe 2018)

National Vegetation Classification – Plant Associations: Larix laricina – Thuja occidentalis Swamp Forest (CEGL002455) (Nature Serve 2018)

Biophysical Settings: Laurentian-Acadian Swamp Systems (BpS 6314810) (LANDFIRE 2009)

Illinois Natural Areas Inventory: Graminoid bog, Low shrub bog, Forested bog (White and Madany 1978)

Wisconsin Natural Communities: Southern tamarack swamp, Poor fen (WDNR 2015)

Ecological site concept

Ponded Organic Acidic Peatlands are located within the green areas on the map. They occur on depressions of lake plains or outwash plains. The soils are Histosols that are very poorly drained and very deep, formed in organic material.

The historic pre-European settlement vegetation on this ecological site was dominated by hydrophytic woody and herbaceous species and mosses. Tamarack (Larix laricina (Du Roi) K. Koch) is the canopy dominant with several common canopy associates including red maple (Acer rubrum L.), black ash (Fraxinus nigra Marshall), green ash (Fraxinus pennsylvanica Marshall), and paper birch (Betula papyrifera Marshall). Shrubs can be well developed and dense with species such as, bog birch (Betula pumila L.), cranberry (Vaccinium macrocarpon Aiton), poison sumac (Toxocodendron vernix (L.) Kuntze) and redosier dogwood (Cornus sericea L. ssp. sericea). Sphagnum (Sphagnum L.) mosses can form a dense understory layer that support a unique community of acidophilic species (White and Madany 1978; WDNR 2015). Common winterberry (Ilex verticillate (L.) A. Gray) is a highly conservative species of the site that is indicative of an undisturbed plant community (White and Madany 1978; Taft et al. 1997). Water level fluctuations are the primary disturbance factor that maintain the site, while drought, occasional fire, and windthrow are secondary disturbances (LANDFIRE 2009; WDNR 2015).

Associated sites

R110XY008IL	Wet Glacial Drift Upland Prairie Loess or other silty or loamy material, loamy outwash, glacial till, lacustrine deposits, and colluvium that are shallow to a high-water table including Ashkum, Bryce, Drummer, Dunham, Elpaso, Matherton, Milford, Monee, Montgomery, Pella, Reddick, Rowe, Selma, Selmass, Westland, and Will soils

R110XY008IL

Wet Glacial Drift Upland Prairie

Loess or other silty or loamy material, loamy outwash, glacial till, lacustrine deposits, and colluvium that are shallow to a high-water table including Ashkum, Bryce, Drummer, Dunham, Elpaso, Matherton, Milford, Monee, Montgomery, Pella, Reddick, Rowe, Selma, Selmass, Westland, and Will soils

Similar sites

R110XY021IL	Ponded Organic Alkaline Peatland Ponded Organic Alkaline Peatland is a SLOPE wetland

R110XY021IL

Ponded Organic Alkaline Peatland

Ponded Organic Alkaline Peatland is a SLOPE wetland

Table 1. Dominant plant species

Tree	(1) Larix laricina (2) Acer rubrum
Shrub	(1) Betula pumila (2) Vaccinium macrocarpon
Herbaceous	(1) Sphagnum

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Physiographic features

Ponded Organic Acidic Peatlands occur on depressions of lake plains or outwash plains. They are situated on elevations ranging from approximately 512 to 1401 feet ASL. The site does not experience flooding, but rather is continuously saturated to ponded from groundwater seepage

Figure 1.

Table 2. Representative physiographic features

Slope shape across	(1) Concave
Slope shape up-down	(1) Concave
Landforms	(1) Lake plain (2) Outwash plain
Runoff class	Negligible
Ponding duration	Brief (2 to 7 days) to very long (more than 30 days)
Ponding frequency	Frequent
Elevation	512 – 1,401 ft
Slope	2%
Ponding depth	12 in
Water table depth	6 in
Aspect	Aspect is not a significant factor

Climatic features

The Northern Illinois and Indiana Heavy Till Plain falls into the hot-summer humid continental climate (Dfa) and warm-summer humid continental climate (Dfb) Köppen-Geiger climate classifications (Peel et al. 2007). The two main factors that drive the climate of the MLRA are latitude and weather systems. Latitude, and the subsequent reflection of solar input, determines air temperatures and seasonal variations. Solar energy varies across the seasons, with summer receiving three to four times as much energy as opposed to winter. Weather systems (air masses and cyclonic storms) are responsible for daily fluctuations of weather conditions. High-pressure systems are responsible for settled weather patterns where sun and clear skies dominate. In fall, winter, and spring, the polar jet stream is responsible for the creation and movement of low-pressure systems. The clouds, winds, and precipitation associated with a low-pressure system regularly follow high-pressure systems every few days (Angel n.d.).

The soil temperature regime of MLRA 110 is classified as mesic, where the mean annual soil temperature is between 46 and 59°F (USDA-NRCS 2006). Temperature and precipitation occur along a north-south gradient, where temperature and precipitation increase the further south one travels. The average freeze-free period of this ecological site is about 168 days, while the frost-free period is about 134 days (Table 2). The majority of the precipitation occurs as rainfall in the form of convective thunderstorms during the growing season. Average annual precipitation is 38 inches, which includes rainfall plus the water equivalent from snowfall (Table 3). The average annual low and high temperatures are 38.0 and 58.5°F, respectively.

Table 3. Representative climatic features

Frost-free period (characteristic range)	129-140 days
Freeze-free period (characteristic range)	153-182 days
Precipitation total (characteristic range)	36-39 in
Frost-free period (actual range)	125-142 days
Freeze-free period (actual range)	152-184 days
Precipitation total (actual range)	35-41 in
Frost-free period (average)	134 days
Freeze-free period (average)	168 days
Precipitation total (average)	38 in

Characteristic range

Actual range

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Figure 2. Monthly precipitation range

Characteristic range

Actual range

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Figure 3. Monthly minimum temperature range

Characteristic range

Actual range

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Figure 4. Monthly maximum temperature range

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Figure 5. Monthly average minimum and maximum temperature

Figure 6. Annual precipitation pattern

Figure 7. Annual average temperature pattern

Climate stations used

(1) PARK FOREST [USC00116616], Chicago Heights, IL
(2) STREAMWOOD [USC00118324], Streamwood, IL
(3) ANTIOCH [USC00110203], Antioch, IL
(4) UNION GROVE [USC00478723], Union Grove, WI

Influencing water features

Ponded Organic Acidic Peatlands are classified as an ORGANIC SOIL FLATS: depressional, groundwater influenced, discharge wetland under the Hydrogeomorphic (HGM) classification system (Smith et al. 1995; USDA-NRCS 2008) and as a Palustrine, Moss/Scrub-Shrub/Forested, Continuously Saturated wetland under the National Wetlands Inventory (FGDC 2013). Groundwater discharge is the main source of water for this ecological site (Smith et al. 1995). Infiltration is very slow (Hydrologic Group D) for undrained soils, and surface runoff is negligible.

Wetland description

Primary wetland hydrology indicators for an intact Ponded Organic Acidic Peatland may include: A2 High water table and A3 Saturation. Secondary wetland hydrology indicators may include: C2 Dry-season water table and D5 FAC-neutral test (USACE 2010).

Figure 8. Hydrologic cycling in Ponded Organic Acidic Peatland ecological site.

Soil features

Soils of Ponded Organic Acidic Peatlands are in the Histosols orders, further classified as Limnic Haplosaprists and Typic Haplosaprists with very slow infiltration and impermeable to slow runoff potential. The soil series associated with this site includes Houghton and Muskego. The parent material is organic material, and the soils are very poorly drained and very deep with seasonal high-water tables. Soil pH classes are strongly acid to moderately alkaline. No rooting restrictions are noted for the soils of this ecological site.

Some soil map units in this ecological site, if not drained, may meet the definition of hydric soils and are listed as meeting criteria 1 of the hydric soils list (77 FR 12234).

Figure 9. Profile sketches of soil series associated with Ponded Organic Acidic Peatland.

Table 4. Representative soil features

Parent material	(1) Organic material
Drainage class	Very poorly drained
Permeability class	Slow
Depth to restrictive layer	80 in
Soil depth	80 in
Surface fragment cover <=3"	Not specified
Surface fragment cover >3"	Not specified
Available water capacity (Depth not specified)	13 – 16 in
Calcium carbonate equivalent (Depth not specified)	60%
Electrical conductivity (Depth not specified)	Not specified
Sodium adsorption ratio (Depth not specified)	Not specified
Soil reaction (1:1 water) (Depth not specified)	5.1 – 8.4
Subsurface fragment volume <=3" (Depth not specified)	1 – 2%
Subsurface fragment volume >3" (Depth not specified)	Not specified

Ecological dynamics

The information in this Ecological Site Description, including the state-and-transition model (STM), was developed based on historical data, current field data, professional experience, and a review of the scientific literature. As a result, all possible scenarios or plant species may not be included. Key indicator plant species, disturbances, and ecological processes are described to inform land management decisions.

The MLRA lies within the tallgrass prairie ecosystem of the Midwest, but a variety of environmental and edaphic factors resulted in landscape that historically supported prairies, savannas, forests, and various wetlands. Ponded Organic Acidic Peatlands form an aspect of this vegetative continuum. This ecological site occurs on depressions of lake plains and outwash plains on very poorly drained, acidic organic soils. Species characteristic of this ecological site consist of hydrophytic woody and herbaceous vegetation and mosses.

Ponded Organic Acidic Peatlands are dependent on consistent groundwater discharge. Water levels naturally fluctuate across spatiotemporal scales, giving rise to various successional phases (LANDFIRE 2009; WDNR 2015). Early successional phases begin as moss-dominated floating bogs. As herbaceous material accumulates, the community shifts to a low bog. The advancing development in the microtopography – acidic hummocks and small, wet depressions – gives rise to the late successional forested bog phase (White and Madany 1978).

Drought, fire, and windthrow have also played a role in shaping this ecological site. The periodic episodes of reduced soil moisture in conjunction with the very poorly-drained soils have favored the proliferation of plant species tolerant of such conditions. Drought can also slow the growth of plants and result in dieback of certain species. Occasional fires reduced plant litter and aided in preventing declines in species richness. Windthrow, coupled with drought and fire would greatly reduce the tree canopy (LANDFIRE 2009; WDNR 2015).

Today, Ponded Organic Acidic Peatlands have been greatly reduced in abundance and diversity. In the early 20th century, sites were cleared, drained, and converted to muck farms. The resulting changes to the soils left them prone to wind erosion and oxidation, making them unsuitable for agriculture. Sites that have not been directly altered show evidence of indirect anthropogenic influences from hydrologic alterations, sedimentation, pollution and invasive species. Restoration of these sites back to the historic conditions may be improbable (WDNR 2015). The state-and-transition model that follows provides a detailed description of each state, community phase, pathway, and transition. This model is based on available experimental research, field observations, literature reviews, professional consensus, and interpretations.

State and transition model

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State 1
Reference State

The reference plant community is categorized as a bog community, dominated by hydrophytic woody and herbaceous vegetation and mosses. The three community phases within the reference state are dependent on consistent groundwater discharge. The fluctuations in discharge alter species composition, cover, and extent. Drought, occasional fires, and windthrow have more localized impacts in the reference phases, but do contribute to overall species composition, diversity, cover, and productivity.

Community 1.1
Tamarack - Red Maple/Bog Birch - Cranberry/Sphagnum

Sites in this reference community phase are dominated by hydrophytic woody vegetation and mosses. Tamarack is the dominant tree species with a patchy to high canopy of even-aged plants. Red maple, black ash, green ash, and paper birch are common canopy associates. A variety of shrubs can be present among the canopy gaps including bog birch, cranberry, redosier dogwood, and poison sumac. The herbaceous layer may be limited, but, if present, may include mostly sedges, such as hairy sedge (Carex lacustris Willd.) and woollyfruit sedge (Carex lasiocarpa Ehrh.) (White and Madany 1978; WDNR 2015).

Dominant plant species

tamarack (Larix laricina), tree
red maple (Acer rubrum), tree
bog birch (Betula pumila), shrub
cranberry (Vaccinium macrocarpon), shrub
sphagnum (Sphagnum), other herbaceous

Community 1.2
Bog Birch - Cranberry/Hairy Sedge - Tawny Cottongrass/Sphagnum

This reference community phase represents a mid-seral low to tall shrub bog community. A variety of shrubs are present, and the herbaceous and moss strata are well-developed. Sedges, along with fringed brome (Bromus ciliatus L.), bluejoint (Calamagrostis canadensis L.), and fowl mannagrass (Glyceria striata (Lam.) Hitchc.) are characteristic graminoids. Forbs can include tawny cottongrass (Eriophorum virginicum L.), yellow marsh marigold (Caltha palustris L.), skunk cabbage (Symplocarpus foetidus (L.) Salisb. Ex W.P.C. Barton), and water arum (Calla palustris L.) (White and Madany 1978; WDNR 2015).

Dominant plant species

bog birch (Betula pumila), shrub
cranberry (Vaccinium macrocarpon), shrub
hairy sedge (Carex lacustris), other herbaceous
tawny cottongrass (Eriophorum virginicum), other herbaceous
sphagnum (Sphagnum), other herbaceous

Community 1.3
Hairy Sedge - Woollyfruit Sedge/Sphagnum - Polytrichum Moss

This reference community phase represents an early seral floating graminoid bog. Mosses co-dominate with a variety of sedges. Acidophilic and insectivorous species are characteristic of this phase and may include roundleaf sundew (Drosera rotundifolia L.), buckbean (Menyanthes trifoliata L.), and purple pitcherplant (Sarracenia purpurea L.) (White and Madany 1978).

Dominant plant species

hairy sedge (Carex lacustris), other herbaceous
woollyfruit sedge (Carex lasiocarpa), other herbaceous
sphagnum (Sphagnum), other herbaceous
polytrichum moss (Polytrichum), other herbaceous

Pathway 1.1A
Community 1.1 to 1.2

Large disturbance event that reduces or removes the tree canopy.

Pathway 1.2A
Community 1.2 to 1.1

Natural succession resulting in lower ponded water conditions and lack of natural disturbances.

Pathway 1.2B
Community 1.2 to 1.3

Disturbance event that sets back the natural succession.

Pathway 1.3A
Community 1.3 to 1.2

Natural succession resulting in lower ponded water conditions and lack of natural disturbances.

State 2
Degraded State

The expansion of ruderal and non-native woody species into Ponded Organic Acidic Peatlands can arise due to a complex interaction of fire suppression, hydrological alterations, and edge effects. Subsurface water reduction from agricultural tiling, ditching, or off-site development in conjunction with the removal of periodic fires result in significant changes to the reference plant community. In addition, edge effects can arise from indirect land management practices (e.g., cropping, herbicide drift, sedimentation, groundwater pollution) on directly adjacent sites that facilitates invasive species spread (WDNR 2015).

Community 2.1
Redosier Dogwood - Glossy Buckthorn

This community phase represents the initial changes to the natural community following hydroperiod alterations, fire suppression, and adjacent land management actions. Tall shrubs form a nearly impenetrable thicket with species such as redosier dogwood, poison sumac, and speckled alder (Alnus incana (L.) Moench ssp. rugosa (Du Roi) R.T. Clausen). Non-native invasive shrubs also encroach, including glossy buckthorn (Frangula alnus Mill.) (WDNR 2015).

Dominant plant species

redosier dogwood (Cornus sericea), shrub
glossy buckthorn (Frangula alnus), shrub

Community 2.2
Red Maple/Redosier Dogwood - Glossy Buckthorn

Sites falling into this community phase represent the natural succession as a result of continuing changes to the hydroperiod and adjacent lands. Red maple along with elms and ashes not only dominate the canopy, but also the subcanopy and sapling layers. Redosier dogwood and glossy buckthorn continue to form a nearly continuous shrub layer, allowing little to no light for any potential tamarack seedlings that may have been present.

Dominant plant species

red maple (Acer rubrum), tree
redosier dogwood (Cornus sericea), shrub
glossy buckthorn (Frangula alnus), shrub

Pathway 2.1A
Community 2.1 to 2.2

Natural succession as a result of continuing landscape changes.

State 3
Anthropogenic State

The anthropogenic state occurs when the reference state is cleared and developed for human use and inhabitation, such as for commercial and housing developments, landfills, parks, golf courses, cemeteries, earthen spoils, etc. The native vegetation has been removed and soils have either been altered in place (e.g. cemeteries) or transported from one location to another (e.g. housing developments). Most of the soils in this state have 50 to 100 cm of overburden on top of the natural soil. This natural material can be determined by observing a buried surface horizon or the unaltered subsoil, till, or lacustrine parent materials. This state is generally considered permanent.

Community 3.1
Human-altered land

Sites in this community phase have had the native plant community removed and soils heavily re-worked in support of human development projects.

Transition T1A
State 1 to 2

Changes to hydrology, long-term fire suppression, pollution, and invasive species transition the site to the degraded state (2).

Transition T1B
State 1 to 3

Vegetation removal and human alterations/transportation of soils transitions the site to the anthropogenic state (3).

Transition T2A
State 2 to 3

Vegetation removal and human alterations/transportation of soils transitions the site to the anthropogenic state (3).

Additional community tables

Supporting information

Inventory data references

No field plots were available for this site. A review of the scientific literature and professional experience were used to approximate the plant communities for this provisional ecological site. Information for the state-and-transition model was obtained from the same sources. All community phases are considered provisional based on these plots and the sources identified in this ecological site description.

Other references

Angel, J. No date. Climate of Illinois Narrative. Illinois State Water Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign. Available at https://www.isws.illinois.edu/statecli/General/Illinois-climate-narrative.htm. Accessed 8 November 2018.

Changes in Hydric Soils Database Selection Criteria. 77 Federal Register 12234 (29 February 2012), pp. 12234-12235.

Cleland, D.T., J.A. Freeouf, J.E. Keys, G.J. Nowacki, C. Carpenter, and W.H. McNab. 2007. Ecological Subregions: Sections and Subsections of the Coterminous United States. USDA Forest Service, General Technical Report WO-76. Washington, DC. 92 pps.

Federal Geographic Data Committee. 2013. Classification of Wetlands and Deepwater Habitats of the United States. FGDC-STD-004-2013. Second Edition. Wetlands Subcommittee, Federal geographic Data Committee and U.S. Fish and Wildlife Service, Washington, D.C. 90 pps.

LANDFIRE. 2009. Biophysical Setting 6314810 Laurentian-Acadian Swamp Systems. In: LANDFIRE National Vegetation Dynamics Models. USDA Forest Service and US Department of Interior. Washington, DC.

NatureServe. 2018. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1 NatureServe, Arlington, VA. Available at http://explorer.natureserve.org. (Accessed 21 January 2020).

Peel, M.C., B.L. Finlayson, and T.A. McMahon. 2007. Updated world map of the Köppen-Geiger climate classification. Hydrology and Earth System Sciences 11: 1633-1644.

Schwegman, J.E., G.B. Fell, M. Hutchinson, G. Paulson, W.M. Shepherd, and J. White. 1973. Comprehensive Plan for the Illinois Nature Preserves System, Part 2 The Natural Divisions of Illinois. Illinois Nature Preserves Commission, Rockford, IL. 32 pps.

Smith, R.D., A. Ammann, C. Bartoldus, and M.M. Brinson. 1995. An Approach for Assessing Wetland Functions Using Hydrogeomorphic Classification, Reference Wetlands, and Functional Indices. U.S. Army Corps of Engineers, Waterways Experiment Station, Wetlands Research Program Technical Report WRP-DE-9. 78 pps.

Taft, J.B., G.S. Wilhelm, D.M. Ladd, and L.A. Masters. 1997. Floristic Quality Assessment for vegetation in Illinois, a method for assessing vegetation integrity. Erigenia 15: 3-95.

Taft, J.B., R.C. Anderson, L.R. Iverson, and W.C. Handel. 2009. Chapter 4: Vegetation ecology and change in terrestrial ecosystems. In: C.A. Taylor, J.B. Taft, and C.E. Warwick (eds.). Canaries in the Catbird Seat: The Past, Present, and Future of Biological Resources in a Changing Environment. Illinois Natural Heritage Survey Special Publication 30, Prairie Research Institute, University of Illinois at Urbana-Champaign. 306 pps.

U.S. Army Corps of Engineers [USACE]. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Midwest Region (Version 2.0). U.S. Army Corps of Engineers, Wetlands Regulatory Assistance Program, U.S. Army Engineer Research and Development Center, Vicksburg, MS. 141 pps.

United States Department of Agriculture – Natural Resources Conservation Service (USDA-NRCS). 2003. National Range and Pasture Handbook, Revision 1. Grazing Lands Technology Institute. 214 pps.

United States Department of Agriculture – Natural Resource Conservation Service (USDA-NRCS). 2006. Land Resource Regions and Major Land Resource Areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. 682 pps.

United States Department of Agriculture – Natural Resource Conservation Service (USDA-NRCS). 2008. Hydrogeomorphic Wetland Classification: An Overview and Modification to Better Meet the Needs of the Natural Resources Conservation Service. Technical Note No. 190-8-76. Washington, D.C. 8 pps.

U.S. Environmental Protection Agency [EPA]. 2013. Level III and Level IV Ecoregions of the Continental United States. Corvallis, OR, U.S. EPA, National Health and Environmental Effects Research Laboratory, map scale 1:3,000,000. Available at http://www.epa.gov/eco-research/level-iii-andiv-ecoregions-continental-united-states. (Accessed 1 March 2017).

White, J. and M.H. Madany. 1978. Classification of natural communities in Illinois. In: J. White. Illinois Natural Areas Inventory Technical Report. Illinois Natural Areas Inventory, Department of Landscape Architecture, University of Illinois at Urbana/Champaign. 426 pps.

Wisconsin Department of Natural Resources [WDNR]. 2015. The Ecological Landscapes of Wisconsin: An Assessment of Ecological Resources and a Guide to Planning Sustainable Management. Wisconsin Department of Natural Resources, PUB-SS-1131 2015, Madison, WI. 293 pps.

Contributors

Lisa Kluesner
Kristine Ryan
Sarah Smith
Tiffany Justus

Approval

Chris Tecklenburg, 4/22/2020

Acknowledgments

This project could not have been completed without the dedication and commitment from a variety of staff members. Team members supported the project by serving on the technical team, assisting with the development of state and community phases of the state-and-transition model, providing peer review and technical editing, and conducting quality control and quality assurance reviews.

List of primary contributors and reviewers.
Organization Name Title Location
Natural Resources Conservation Service Ron Collman State Soil Scientist Champaign, IL
Tonie Endres Senior Regional Soil Scientist Indianapolis, IN
Tiffany Justus Soil Scientist Aurora, IL
Lisa Kluesner Ecological Site Specialist Waverly, IA
Rick Neilson State Soil Scientist Indianapolis, IN
Jason Nemecek State Soil Scientist Madison, WI
Kevin Norwood Soil Survey Regional Director Indianapolis, IN
Kristine Ryan MLRA Soil Survey Leader Aurora, IL
Stanley Sipp Resource Inventory Specialist Champaign, IL
Sarah Smith Soil Scientist Aurora, IL
Chris Tecklenberg Acting Regional Ecological Site Specialist Hutchinson, KS

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	09/07/2022
Approved by	Chris Tecklenburg
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 R110XY020IL

Ponded Organic Acidic Peatland

Last updated: 4/22/2020 Accessed: 12/22/2024

General information

MLRA notes

Classification relationships

Ecological site concept

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: 4/22/2020
Accessed: 12/22/2024