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Conservation Service

Ecological site F124XY006OH

Wet Lowland and Depression

Last updated: 6/30/2020
Accessed: 04/25/2024

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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): 124X–Western Allegheny Plateau

Major Land Resource Area (MLRA): 124—Western Allegheny Plateau (USDA-NRCS, 2006)
MLRA 124, Western Allegheny Plateau extends from and includes western PA just north of Pittsburgh through southeastern OH to and includes northeastern KY. This area is primarily in the Kanawha Section of the Appalachian Province of the Appalachian Highlands. This MLRA is on an unglaciated dissected plateau with narrow level valley floors, rolling ridgetops, and hilly to steep slopes with dendritic stream drainages. A notable exception is the broad, Teays Valley, and other glacio-fluvial and glacio-lacustrine features attributed to nearby Pleistocene glaciation. Elevation ranges from 660 to 1310 feet (200 to 400 meters). The geology is predominantly cyclic beds of sandstone, siltstone, clay, shale and coal of Pennsylvanian age. Soils are dominated by Udalfs, Udults, and Ochcrepts with a mesic temperature regime in combination with five parent materials, residuum, colluvium, alluvium, eolian, and extra-glacial material of glacio-fluvial and glaciolacustrine mesic materials. The climate is predominately a humid continental to temperate, with 37 to 45 inches (940-1145 mm). Average annual temperature is 46 to 56 degrees F (8 to 13 degree C) with a freeze-free period averaging 185 days. Much of the areas is either forest or in farms, principally for hay and pasture, with fruits and vegetables grown locally. Coal and gas extraction are important industries in the northern part of the MLRA.

Classification relationships

USDA-NRCS (USDA 2006):Land Resource Region (LRR): N—East and Central Farming and Forest Region
Major Land Resource Area (MLRA): 124—Western Allegheny Plateau
USDA-FS:
Province: Humid Temperate
Section: Southern Unglaciated Allegheny Plateau
Subsection: Pittsburgh Low Plateau
Unglaciated Muskingam Plains
Western Hocking Plateau
Lower Scotio River Plateau
Teays Plateau
Kinniconick and Licking Knobs
Section: North Cumberland Plateau (in Part)
Subsection: Kinniconick and Licking Knobs
Miami-Scioto Plain – Tipton Till Plain

Ecological site concept

Within the dissected plateau of the unglaciated Western Allegheny Plateau, the Wet Lowland and Depression ecological site is set in a variety of wetland landscapes ranging from bottomlands, valley basins, and depressions. The ecological site is derived from calcareous to acid mixed sedimentary geology primarily composed of limestone, sandstone, shale, siltstone. The seasonably high water table is generally at to 9 inches below the surface (0-23 cm). Parent materials include recent slackwater alluvium, colluvium, lacustrine, and glacio-lacustrine material. These landscapes tend to be flat or only gently sloping. The substrate is mineral soil but may have a component of organic material. The sites are very poorly-drained to poorly-drained. The flooding frequency is none to rare and the ponding frequency is none to frequent. Representative soils include: Sebring, Canadice, Lorain, Mullins, Purdy, Peoga, Purdy Variant, Luray, Knowlton, Ginat, Brinkerton, Andover. Reference plant communities include: Maple - Ash - Elm Swamps and Pin Oak Mixed Hardwood Depression Forests.

Similar sites

F124XY008OH	Wet Floodplain and Drainageway Wet Floodplain and Drainage share wetland characteristics. However, Wet Lowland and Depression flood none or rarely.

F124XY008OH

Wet Floodplain and Drainageway

Wet Floodplain and Drainage share wetland characteristics. However, Wet Lowland and Depression flood none or rarely.

Table 1. Dominant plant species

Tree	Not specified
Shrub	Not specified
Herbaceous	Not specified

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Physiographic features

The Wet Lowland and Depression ecological site is found on hydric soils in bottomlands, bottomlands, valley basins, and depressions. The parent materials are varied and include recent slackwater alluvium, colluvium, lacustrine, and glaciolacustrine material derived from mixed sedimentary rocks of calcareous and noncalcareous shales, siltstones, sandstones, and limestone. These landscapes tend to be flat or only gently sloping. Generally, this site is not subject to flooding.

Table 2. Representative physiographic features

Landforms	(1) Depression (2) Draw
Elevation	300 – 1,300 ft
Slope	3%
Aspect	Aspect is not a significant factor

Climatic features

The regional climate of the unglaciated Western Allegheny Plateau is predominately a humid continental climate grading at the extreme southwestern corner a to humid temperate climate with hot summers and cool winters (Beck et al., 2018; Bailey, 2014). However, the local climate is highly influenced by the dissected terrain, where climatic variations may be greater at the local scale, e.g., cooler temperatures and shorter growing season at higher elevations and more northerly latitudes.

The average annual precipitation in most of this area is 37 to 45 [50] inches (940 to 1,145 [1,270] millimeters. High-intensity, convective thunderstorms are common in summer. The average annual temperature is 46 to 56 degrees F (8 to 13 degrees C). The freeze-free period (averages) 185 days.

Climate change is occurring, and the resiliency of any ecological site will depend upon the direct and indirect effects upon component species and shifting atmospheric and soil conditions.

Wetlands are probably low to moderately vulnerable to climate change effects. Uncertain whether greater frequency and magnitude of precipitation will offset hot droughts that may adversely affect woody wetland plants (Butler et al., 2015).

Table 3. Representative climatic features

Frost-free period (characteristic range)	122-142 days
Freeze-free period (characteristic range)	156-178 days
Precipitation total (characteristic range)	40-44 in
Frost-free period (actual range)	115-148 days
Freeze-free period (actual range)	148-184 days
Precipitation total (actual range)	38-46 in
Frost-free period (average)	132 days
Freeze-free period (average)	167 days
Precipitation total (average)	42 in

Characteristic range

Actual range

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Figure 1. Monthly precipitation range

Characteristic range

Actual range

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Figure 2. Monthly minimum temperature range

Characteristic range

Actual range

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Figure 3. Monthly maximum temperature range

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Figure 4. Monthly average minimum and maximum temperature

Figure 5. Annual precipitation pattern

Figure 6. Annual average temperature pattern

Climate stations used

(1) PUTNEYVILLE 2 SE DAM [USC00367229], Dayton, PA
(2) FORD CITY 4 S DAM [USC00362942], Ford City, PA
(3) BUTLER 2 SW [USC00361139], Butler, PA
(4) DENISON WTR WKS [USC00332160], Dennison, OH
(5) NEW PHILADELPHIA FLD [USW00004852], New Philadelphia, OH
(6) MILLERSBURG [USC00335297], Millersburg, OH
(7) DANVILLE 2 W [USC00332044], Danville, OH
(8) COSHOCTON AG RSCH STN [USC00331905], Fresno, OH
(9) COSHOCTON WPC PLT [USC00331890], Coshocton, OH
(10) ZANESVILLE MUNI AP [USW00093824], Zanesville, OH
(11) PHILO 3 SW [USC00336600], Philo, OH
(12) NEW LEXINGTON 2 NW [USC00335857], New Lexington, OH
(13) LOGAN [USC00334672], Logan, OH
(14) JACKSON 3 NW [USC00334004], Jackson, OH
(15) WAVERLY [USC00338830], Waverly, OH
(16) PORTSMOUTH-SCIOTOVILLE [USC00336781], South Shore, OH
(17) WARNOCK2 [USC00158432], Greenup, KY
(18) GRAYSON 2 E [USC00153389], Grayson, KY
(19) OLIVE HILL 5NE [USC00156012], Olive Hill, KY
(20) GRAYSON 3 SW [USC00153391], Grayson, KY
(21) GIMLET 9N [USC00153230], Olive Hill, KY
(22) CAVE RUN LAKE [USC00152791], Morehead, KY
(23) ASHLAND [USC00150254], South Point, KY

Influencing water features

Wet Lowland and Depression ecological site is found on hydric soils in bottomlands, bottomlands, valley basins, and depressions which can be associated with waterbodies such as lakes and river systems.

Wetland description

In the National Wetland Classification System (Cowardin et al., 1979), the Wet Lowland and Depression ecological site may be considered in the palustrine system and less commonly in the riverine, and lacustrine systems. In the palustrine system, this ecological site would have a persistent vegetated class, such as emergent, scrub-shrub, or forested, and modified by any non-tidal water regime. Less commonly, in the riverine/lower perennial subclass and the lacustrine/littoral subclass this ecological site would range from unconsolidated vegetated shores, to non-persistent emergent vegetation with a variety of non-tidal flooding regimes.

Soil features

Representative soils include: Sebring, Canadice, Lorain, Mullins, Purdy, Peoga, Purdy Variant, Luray, Knowlton, Ginat, Brinkerton, Andover. The substrate is mineral soil but may have a component of organic material. The sites are very poorly-drained to poorly-drained. The flooding frequency is none to rare and the ponding frequency is none to frequent.

Ecological dynamics

[Caveat: The vegetation information contained in this section is only provisional, based on concepts, not yet validated with field work.*]

The vegetation groupings described in this section are based on the terrestrial ecological system classification and vegetation associations developed by NatureServe (Comer et al.,2003). Terrestrial ecological SYSTEMS are specifically defined as a group of plant community types called ASSOCIATIONS that tend to co-occur within landscapes with similar ecological processes, substrates, and/or environmental gradients. They are intended to provide a classification unit that is readily mappable, often from terrain and remote imagery, and readily identifiable by conservation and resource managers in the field. A given system will typically manifest itself in a landscape at intermediate geographic scales of tens-to-thousands of hectares and will persist for 50 or more years. A vegetation association is a plant community that is much more specific to a given soil, geology, landform, climate, hydrology, and disturbance history. It is the basic unit for vegetation classification and recognized by the US National Vegetation Classification (FDGC, 2008; USNVC, 2017). Each association will be named by the diagnostic and often dominant species that occupy the different height strata (represented by tree, shrub, and herb layers). Within the NatureServe Explorer database, ecological systems are numbered by a community Ecological System Code (CES) and individual vegetation associations are assigned an identification number called a Community Element Global Code (CEGL).

Additional and more localized vegetation information can be provided by the various State Heritage Programs. Additional insights to the vegetation were provided by Plant Communities of Ohio: A Preliminary Classification (Anderson, 1982).

Due to a long history of human activity, the reference condition more accurately reflects the current naturalized, minimally-managed state rather than the historic, pre-European settlement condition. Within the Reference State, plant communities characteristic to the Wet Lowland and Depression ecological belong to the North-Central Interior and Appalachian Rich Swamp system (CES202.605) and the North-Central Appalachian Acidic Swamp system (CES202.604) as categorized and described by NatureServe (2020). Wet Lowland and Depression ecological sites include depressions, wet backwaters of rivers, and lakeside wetlands. Besides the mature plant community-types listed here, other spontaneous, successional plant community-types that exist following disturbance or management are normally considered phases of the minimally managed Reference State. However, if dominated by non-native plant, the altered plant community-type would be considered belonging to the Semi-Natural State.

Other ecological states, a Semi-natural State and a Cultural State are recognized. The Semi-natural State would expect plant communities where ecological processes primarily operate with some conditioning by land management, e.g., managed forests, or plant communities that are an artifact of land management e.g., predominately invasive plants. The Cultural State is a completely converted or transformed state heavily or completely conditioned by land management, e.g., cultivated lands, pasture/haylands, vineyards, and plantations, etc. Generally, the form of vegetation in the Semi-natural State or the Cultural State is not able to be specified until field work is conducted.

[*Caveat] The vegetation information presented is representative of complex plant communities. Key indicator plants and ecological processes are described to help inform land management decisions. Plant communities will differ across the MLRA because of the naturally occurring variability in weather, soils, and geography. The reference plant community is not necessarily the management goal. The drafts of species lists are merely representative and are not botanical descriptions of all species occurring, or potentially occurring, on this site. They are not intended to cover every situation or the full range of conditions, species, and responses for the site.

State and transition model

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Standard diagram

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State 1
Reference State (minimally-managed)

As a result of a long history of human activity, the associations listed below, may in reality, reflect the current naturalized, minimally-managed state rather than the historic, pre-European settlement condition. Notice transition pathways are not always designated between some of the communities in the reference state because the differences in vegetation are more controlled by landscape position, rather than disturbances or management, or that the relationships are not understood. In addition, undisclosed successional plant community-types following disturbance may be included as community phases. Within the reference state, the plant communities are quite variable depending on many factors such as differences in hydrology and the nature of the substrate. Typical plant communities include: • Acer (rubrum, saccharinum) - Fraxinus spp. - Ulmus americana Swamp Forest (CEGL005038) Translated Name: (Red Maple, Silver Maple) - Ash species - American Elm Swamp Forest) Common Name: [Maple - Ash - Elm Swamp] • Quercus palustris - Quercus bicolor - (Liquidambar styraciflua) Swamp Forest (CEGL002432) Translated Name: (Pin Oak - Swamp White Oak - (Sweetgum) Swamp Forest) Common Name: [Pin Oak Mixed Hardwood Depression Forest] And many others: • Quercus palustris - Quercus bicolor - Nyssa sylvatica - Acer rubrum Sand Wet Flatwoods Forest (CEGL002100) Translated Name: (Pin Oak - Swamp White Oak - Blackgum - Red Maple Sand Wet Flatwoods Forest) Common Name: [Pin Oak - Swamp White Oak Sand Wet Flatwoods ] • Larix laricina / Aronia melanocarpa / Sphagnum spp. Swamp Forest (CEGL002472) Translated Name: (Tamarack / Black Chokeberry / Peatmoss species Swamp Forest) Common Name: [Southern Tamarack Swamp] • Fraxinus nigra - Acer rubrum / Rhamnus alnifolia / Carex leptalea Swamp Forest(CEGL007144) Translated Name: (Black Ash - Red Maple / Alderleaf Buckthorn / Bristly-stalked Sedge Swamp Forest) Common Name: [Black Ash - Red Maple Swamp Forest] • Cornus sericea - Salix spp. - (Rosa palustris) Shrub Swamp (CEGL002186) Translated Name: (Red-osier Dogwood - Willow species - (Swamp Rose) Shrub Swamp) Common Name: [Red-osier Dogwood - Willow Midwest Shrub Swamp] (Source: NatureServe, 2020)

Community 1.1
Red Maple - Silver Maple - Ash species - American Elm Swamp Forest

Acer (rubrum, saccharinum) - Fraxinus spp. - Ulmus americana Swamp Forest (CEGL005038) Translated Name: (Red Maple, Silver Maple) - Ash species - American Elm Swamp Forest) Common Name: [Maple - Ash - Elm Swamp] (Source: NatureServe 2020)

Community 1.2
Pin Oak - Swamp White Oak - (Sweetgum) Swamp Forest

Quercus alba - Quercus rubra - Quercus montana - Acer saccharum / Lindera benzoin Forest (CEGL002059) Translated Name: White Oak - Northern Red Oak - Chestnut Oak - Sugar Maple / Northern Spicebush Forest) Common Name: White Oak - Chestnut Oak - Maple Acidic Forest] (Source: NatureServe 2020)

Community 1.3
Successional plant community-type(s)

Pathway 1.1-1.3
Community 1.1 to 1.3

disturbance, greater fire frequency

Pathway 1.2-1.3
Community 1.2 to 1.3

disturbance, greater fire frequency

Pathway 1.3-1.1
Community 1.3 to 1.1

vegetation development/succession

Pathway 1.3-1.2
Community 1.3 to 1.2

vegetation development/succession

State 2
Semi-natural State

The Semi-natural State would expect plant communities where ecological processes are primarily operating with some land conditioning in the past or present, e.g., managed forests, or plant communities that are an artifact of land management e.g., predominately invasive plants.

Community 2.1
Managed Forest/Woodland

Community 2.2
Invasive Plants

Pathway 2.1-2.2
Community 2.1 to 2.2

2.1-2.2 invasive plant establishment, vegetation development/succession

Pathway 2.2-2.1
Community 2.2 to 2.1

invasive plant management, forest management

State 3
Cultural State

The Cultural State would expect the ecological site to be strongly conditioned by land management/converted to Cultivated/Pasture/Plantation.

Community 3.1
Cultivated

Community 3.2
Pasture

Community 3.3
Plantation

Transition T1-2
State 1 to 2

forest management, fire suppression, disturbance, invasive plant establishment

Transition T1-3
State 1 to 3

cutting, land clearing, plant establishment

Restoration pathway R2-1
State 2 to 1

plant removal, plant establishment, successional management

Transition T2-3
State 2 to 3

cutting, land clearing, plant establishment

Restoration pathway R3-1
State 3 to 1

plant removal, plant establishment, successional management

Restoration pathway R3-2
State 3 to 2

forest management, fire suppression, disturbance, invasive plant establishment

Additional community tables

Supporting information

Inventory data references

Site Development and Testing Plan
Future work is needed, as described in a project plan, to validate the information presented in this provisional ecological site description. Future work includes field sampling, data collection and analysis by qualified vegetation ecologists and soil scientists. As warranted, annual reviews of the project plan can be conducted by the Ecological Site Technical Team. A final field review, peer review, quality control, and quality assurance reviews of the ESD are necessary to approve a final document.

Other references

Anderson, D. M. 1982. Plant Communities of Ohio: A Preliminary Classification. Division of Natural Areas and Preserves, Ohio Department of Natural Resources, Columbus, OH (Unpublished Report).

Apsley, D., and B.C. McCarthy. 2004. White-tailed deer herbivory on forest regeneration following fire and thinning treatments in southern Ohio mixed oak forests. P. 461–471 In: Yaussy, D.A., D.M. Hix, R.P. Long, and P.C. Goebel (eds.) Proceedings, 14th Central Hardwood Forest Conference, 2004 March 16-19; Wooster, OH. Gen. Tech. Rep. NE-316. USDA Forest Service, Northeastern Research Station, Newtown Square, PA.

Bailey, R. 2014. Ecoregions: the ecosystem geography of the oceans and continents. 2nd ed. New York, NY: Springer-Verlag.

Beck, H.E., N.E. Zimmermann, T.R. McVicar, N. Vergopolan, A. Berg, E.F. Wood. 2018. Present and future Köppen-Geiger climate classification maps at 1-km resolution. Scientific Data5:180214, doi:10.1038/sdata.2018.214.

Butler, P.R., L. Iverson, F.R. Thompson, L. Brandt, S. Handler, M. Janowiak, P.D. Shannon, C. Swanston, K. Karriker, J. Bartig, and S. Connolly. 2015. Central Appalachians Forest Ecosystem Vulnerability Assessment and Synthesis: a Report From The Central Appalachians Climate Change Response Framework Project. Gen. Tech. Rep. NRS-146, US Department of Agriculture, Forest Service, Northern Research Station, Newtown Square, PA.

Comer, P., D. Faber-Langendoen, R. Evans, S. Gawler, C. Josse, G. Kittel, S. Menard, M. Pyne, M. Reid, K. Schulz, and K. Snow. 2003. Ecological Systems of the United States: A Working Classification of US Terrestrial Systems. NatureServe, Arlington, VA.

FGDC (Federal Geographic Data Committee). 2008. National Vegetation Classification Standard, Version 2. VGDC‐STD‐005‐2008 (Version 2). FGDC Vegetation Subcommittee, Reston, Virginia.

Lafon, C.W., A.T. Naito, H.D. Grissino-Mayer, S.P. Horn, and T.A. Waldrop. 2017. Fire History of the Appalachian Region: a Review and Synthesis. Gen. Tech. Rep. SRS-219., U.S. Department of Agriculture, Forest Service, Southern Research Station, Asheville, NC.

NatureServe 2020. NatureServe Explorer: An Online Encyclopedia of Life [web application]. Version #.#. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org (Accessed: April 2020).

Nowacki, G.J. and M.D. Abrams. 2008. The demise of fire and “mesophication” of forests in the eastern United States. Bioscience 58(2):123–138.

Ohio Division of Wildlife. 2015. Ohio’s State Wildlife Action Plan. Columbus, Ohio, USA.

Royo, A.A.; D.W. Kramer, K.V. Miller, N.P. Nibbelink, and S.L. Stout. 2017. Spatio-temporal variation in foodscapes modifies deer browsing impact on vegetation. Landscape Ecology 32(2):2281–2295.

USDA-NRCS [United States Department of Agriculture, Natural Resources Conservation Service]. 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.

USNVC [United States National Vegetation Classification]. 2019. United States National Vegetation Classification Database, V2.03. Federal Geographic Data Committee, Vegetation Subcommittee, Washington DC. http://usnvc.org (accessed April 2020).

Contributors

Nels Barrett, Ph.D.
Jason Teets

Approval

Nels Barrett, 6/30/2020

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	Nels Barrett
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 F124XY006OH

Wet Lowland and Depression

Last updated: 6/30/2020 Accessed: 04/25/2024

General information

MLRA notes

Classification relationships

Ecological site concept

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: 6/30/2020
Accessed: 04/25/2024