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Forest In Illinois
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Southern Catalpa
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Forest Communities in Illinois Illinois's major woodland types have been described according to forest community composition and are often named for the pre-dominant overstorey trees present These forest communities recur predictably under certain soil moisture conditions and in specific physiographic areas Most forests in Illinois can be placed in one of six communities: oak-hickory, maple-beech, elm-ash-soft maple, oak-gum-cypress, oak-pine, loblolly-shortleaf pine, white-red-jack pine
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Oak Hickory Forest
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Maple-Beech Forest
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Elm-Ash-Soft Maple Forest
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Oak-Gum-Cypress Forest
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Oak-Pine Forest
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Loblolly-Shortleaf Pine Forest
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Red-White-Jack Pine Forest
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Illinois Wetland Ecosystems
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Wetland Definition The "Federal Manual for Identifying and Delineating Jurisdictional Wetlands" was published in 1991 and was adopted in 1993 – defined wetlands as: “Wetlands are lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water..."
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More on wetland definition Critical to the definition of wetlands is that a wetland must have at least 1 of the following 3 characteristics 1. hydrophytic vegetation - plants which are adapted to grow in waterlogged soil - if these plants are present you definitely have a wetland - at least 470 wetland and aquatic plants have been identified in Illinois 2. hydric soil - soil which is waterlogged and undrained 3. wetland hydrology - the soil must be saturated with water or covered with shallow water at some time during the growing season of each year - this is the hardest standard to apply - for some fully functional wetlands are only flooded or saturated on occasional years - but they will have hydrophytic vegetation and/or hydric soils, so they are true wetlands
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Prairie Pothole Wetlands
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Illinois River Basin Wetlands
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Bald Cypress Swamps
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Wetland Draining – Old School
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Wetland Draining Today
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Drainage Districts
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Riparian Wetlands
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Stream Channelization
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Mississippi and Illinois River Dams
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Mississippi River Dam – La Crosse, WI
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Wetland Types
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Palustrine Wetlands Palustrine wetland systems - nontidal wetlands covering areas with water up to 6.6 feet (2 m) deep Prairie glacial marshes in of north-central Illinois are shallow basins within small watersheds and these are typical palustrine systems - they have seasonal fluctuations in water level due to annual rainfall patterns and annual changes in water level reflecting long-term climate variations (drought cycles)
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Palustrine Types Type I wetlands are seasonally flooded basins where soil is periodically waterlogged but drains well - so well it could be farmed most years. These wetlands occur as upland depressions or overflow bottomlands Dominant vegetation varies with length of flooding and may include smartweed, wild millet, fall panicum, sedges, beggar-ticks, ragweed, and barnyard grass
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Palustrine Type 1 Wetland
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Palustrine Types Type II wetlands are freshwater meadows where soil remains waterlogged within inches of the surface and standing water is present in spring and after heavy rainfall common species include prairie cordgrass, reed canary grass, common reed (Phragmites), manna grass, sedges, rushes, and mints
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Palustrine Type II Wetland
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Palustrine Types Type III wetlands are inland shallow freshwater marshes that usually have 6 inches of standing water, but may dry out in late summer common species include grasses, bulrushes, spikerushes, cattails, arrowheads (Sagittaria), giant bur reed, smartweeds, and sedges
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Palustrine Type III Wetland
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Palustrine Types Type IV wetlands are deep fresh marshes with 6 inches to 3 feet of standing water dominant plants include cattails, bulrushes, reeds, spikerushes, bur reeds, pondweeds, water milfoils, coontails, waterlilies (lotus) and duckweeds
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Palustrine Type IV Wetland
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Seepage Wetlands Seepage wetlands are distinctive types of palustrine wetlands that form in areas of groundwater discharge - they are sometimes called fens or hanging bogs Typically the soil is continuously saturated, although there may be little or no standing water
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Seepage Wetland
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Lacustrine Wetlands Lacustrine wetland systems are found in the shallow protected areas of lakes with water depth in the deepest part of the wetland basin greater than 6.6 feet (2 m) Wetlands in this system extend from the lakeshore to the point where at low water stage the water is 6.6 feet deep
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Lacustrine Wetlands Lacustrine wetlands are found along protected shores of our larger lakes Lacustrine wetlands are often referred to as Type V wetlands or open freshwater wetlands Typical vegetation includes emergent species of Type IV lining the shore, with floating and submerged aquatic plants in open water
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Lacustrine Wetland
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Riparian Wetlands These are riverine wetland systems which include wetland communities in river channels on sand bars, etc.; overflow bottomland palustrine wetlands; lacustrine wetlands in oxbow lakes; and backwater marshes These areas function together as an ecosystem where flowing water may supply moisture, sediments, and nutrients which are not available in upland systems
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Riparian Vegetation common species include those found in palustrine and lacustrine wetlands (mainly cattails, sedges, rushes, smartweed, arrowheads, reeds, bur reeds) as well as bottomland trees and shrubs including willows, cottonwood, silver maple, green ash, box elder, hackberry, slippery elm, American elm, basswood, black walnut, poison ivy, honeysuckles, dogwoods, gooseberry, raspberry, chokecherry, elderberry, burning bush
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Riparian Wetlands
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