Twin Swamps

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General Information
Criteria:
  • Listed on more than one “valuable wetland” list by natural resource agencies or nongovernment organizations.
  • Protects biological diverse wetland flora, fauna and/or their habitat

Twin Swamps, an Indiana State Dedicated Nature Preserve about 600 acres in size, is owned and managed by the Indiana Department of Natural Resources, Division of Nature Preserves. It consists of a swamp cottonwood-bald cypress swamp and an overcup oak swamp with a southern flatwoods community in between the two swamps. The bald cypress swamp is the northern most bald cypress swamp in the United States. Twin Swamps harbors 26 state listed endangered, threatened or rare species, as well as, many other species normally associated with this habitat. Because of its size and its diverse ecosystems that are rare in Indiana, the Division of Nature Preserves has hosted a number of biological surveys at Twin Swamps, including swamp rabbit research, amphibian and reptiles surveys, and butterfly and moth surveys. Twin Swamps is part of a large complex of protected lands located near the confluence of the Wabash and Ohio Rivers. Other partners in protection include the Indiana Department of Natural Resources Division of Fish and Wildlife, The Nature Conservancy, and the U.S. Army Corps of Engineers. These areas provide significant floodwater storage for these two rivers. The Division of Nature Preserves, maintains a boardwalk trail through Twin Swamps so that visitors can experience the swamps while protecting the fragile nature of the preserve.  

Exemplary Ecosystem Services:
  • Maintains ecological connectivity/cohesion
  • Recreation (birdwatching, ecotourism)
  • Flood storage/mitigation
Conservation Status and Threats
Conservation status: State/Province/Regional Protection
Adjacent Land Use: Agricultural (cropland, orchards, greenhouse)
Approximate natural buffer width:
  • > 100 ft
Ecology
General wetland characterization:
  • Inland Fresh Wooded Swamp
Soils:

Elkinsville Silt Loam, Ginat Silt Loam, Weinbach Silt Loam, Pekin Silt Loam

Flora and Fauna
Dominant flora: Taxodium distichum, Quercus lyrata, Populus heterophylla, Carya ovata, Quercus bicolor, Quercus pagoda, Quercus palustris, Acer rubrum, Liquidambar styraciflua, Cephalanthus occidentalis, Azolla caroliniana
Unique flora: Isoetes melanopoda, Hottonia inflata, Ranunculus laxicaulis, Ranunculus pusillus, Rhynchospora corniculata var. interior, Solidago buckleyi, Taxodium distichum
Dominant fauna: Ambystoma maculatum, Ambystoma opacum, Ambystoma texanum, Ambystoma talpoideum, Plethodon cinereus, Plethodon dorsalis, Siren intermedia, Notophthalmus viridescens, Hyla chrysoscelis, Rana clamitans melanota, Rana utricularia, Terrepene caroliniana, Eumeces fasciatus, Elaphae obsoleta spiloides, Nerodia erythrogaster neglecta, Thamnophis sirtalis, king rail, prothonotary warbler
Rare fauna: Catocala marmorata, Ambystoma talpoideum, Sylvilagus aquaticus, Nerodia erythrogaster neglecta
Additional Information
Please upload your first piece of evidence: TwinSwamps EOs.pdf
Please upload your first piece of evidence: TwinSwamps ArticlesReprints 2007 INPAWS Journal v14n2 _ 05142012.pdf
Please upload your second piece of evidence: USI_Drive Historic Southern Indiana brochure.pdf
Address:
Mount Vernon, IN

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