Ohio subset of Plant Communities of the Midwest ... - NatureServe

Wooded Swamps and Floodplains: Midwestern Riverfront Floodplain Forests
Acer saccharinum - Ulmus americana - (Populus deltoides) Forest
Silver Maple - American Elm - (Eastern Cottonwood) Forest
Silver Maple - Elm - (Cottonwood) Forest
CEGL002586
DESCRIPTION: Canopy cover is more-or-less closed and dominated by Acer saccharinum. Codominants may include
Populus deltoides, Platanus occidentalis, Ulmus americana, Ulmus rubra, Salix nigra, Acer negundo, Betula nigra,
Celtis occidentalis, and Fraxinus pennsylvanica. The shrub and sapling layer is often open (50%
cover or basal area). This type is most clearly expressed on larger rivers. To some degree this type is more
northern, separable from the more southern type Acer saccharinum - Celtis laevigata - Carya illinoinensis Forest
(CEGL002431), but this distinction is not yet well resolved. In the southern parts of its range, this type may overlap
with Platanus occidentalis - Acer saccharinum - Juglans nigra - Ulmus rubra Forest (CEGL007334), but that type is
generally a higher terrace, small stream type. Compare this type with SAF cover type 62 (Eyre 1980). In Minnesota
stands with less than either 50% cottonwood or silver maple and not in northwestern Minnesota tend to occur here
(i.e., a mixed floodplain forest), as do silver maple stands with a supercanopy of cottonwoods. In southwestern
Minnesota, stands with only some swamp white oak go here. If swamp white oak is dominant the stands probably
belong with either an association in the Quercus palustris - (Quercus bicolor) Seasonally Flooded Forest Alliance
(A.329), or Quercus macrocarpa - Quercus bicolor - Carya laciniosa / Leersia spp. - Cinna spp. Forest
(CEGL002098), at least in the Midwest. Fraxinus pennsylvanica is a typical codominant in this type. In Wisconsin, this
type may better be named Acer saccharinum - Fraxinus pennsylvanica - Betula nigra Forest (E. Epstein pers. comm.
1999).
CONSERVATION RANK: G4. There has been significant conversion of stands to agriculture, hydrologic modifications
due to river dams, etc., and siltation caused by modified flooding regimes.
DISTRIBUTION: This silver maple - elm - cottonwood forest community is found throughout the midwestern United
States and parts of the eastern United States, ranging from Pennsylvania west to Minnesota, south to Arkansas, and
east to Virginia.
USFS ECOREGIONS: 212Hb:CCC, 212He:CCC, 212Hm:CCC, 212Ht:CCP, 212Hv:CCC, 212Hw:CCP, 212Hx:CCP, 212Hy:CCP,
212Ja:CCC, 212Je:CCC, 212Jf:CCC, 212Jj:CC, 212Jl:CCC, 212Js:CCC, 212Ka:CC, 212Kb:CCC, 212Mb:CPP, 212Na:CC,
212Nb:CCP, 212Nc:CCC, 212Nd:CCC, 221Ea:CCC, 221Ec:CCC, 221Ed:CCC, 221Ef:CCC, 221Fa:CCC, 222Aj:CCC,
222Ap:CCC, 222Aq:CCC, 222Ch:CCC, 222Db:CCC, 222Dc:CCP, 222De:CCC, 222Df:CCP, 222Ei:CPP, 222Ek:CPP,
222El:CPP, 222Em:CPP, 222Fa:CCP, 222Fb:CCC, 222Fc:CCP, 222Fd:CCP, 222Fe:CCP, 222Ff:CCP, 222Ga:CCC,
222Gb:CCC, 222Gc:CCC, 222Gd:CCP, 222Ge:CCC, 222Ha:CCC, 222Hb:CCC, 222Hc:CCC, 222Hf:CCC, 222If:CCC,
222Jb:CCC, 222Jh:CCC, 222Ji:CCC, 222Jj:CCC, 222Ka:CCC, 222Kb:CCC, 222Kd:CCC, 222Kf:CCC, 222Kg:CCC, 222Kh:CCC,
222Kj:CCP, 222Lc:CCC, 222Ld:CCC, 222Lf:CCC, 222Ma:CCC, 222Mb:CCC, 222Mc:CCC, 222Md:CCC, 222Me:CCC,
234Aa:CC, 234Am:CCC, 234An:CCC, 251Ba:CCC, 251Be:CCC, 251Cc:CCC, 251Cd:CCC, 251Cf:CCC, 251Dd:CCP,
251De:CCC, 251Df:CCC, 251Dg:CCC, 251Dh:CCC, 251Eb:CCC, M221Aa:CCC, M221Ab:CCC, M221Ac:CCC, M221Ad:CCC,
M221Bb:CCC, M221Da:CCC
CONSERVATION REGIONS: 35:C, 36:C, 37:C, 38:C, 40:, 42:C, 43:P, 44:C, 45:C, 46:C, 47:C, 48:C, 49:C, 50:P, 52:C, 59:C
STATES: AR IA IL IN KY MI MN MO OH PA TN VA WI WV PROVINCES: ON
PLANT COMMUNITIES OF THE MIDWEST – 2001. APPENDIX: ASSOCIATION DESCRIPTIONS
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