Ohio subset of Plant Communities of the Midwest ... - NatureServe
Ohio subset of Plant Communities of the Midwest ... - NatureServe
Ohio subset of Plant Communities of the Midwest ... - NatureServe
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Wooded Swamps and Floodplains: Nor<strong>the</strong>rn Rich Conifer Swamps<br />
Tsuga canadensis - Betula alleghaniensis Saturated Forest<br />
Eastern Hemlock - Yellow Birch Saturated Forest<br />
Hemlock - Yellow Birch Swamp Wet-mesic Forest<br />
CEGL005003<br />
DESCRIPTION: The overstory <strong>of</strong> this community is composed <strong>of</strong> conifers with a moderate amount <strong>of</strong> deciduous trees.<br />
Tsuga canadensis is usually <strong>the</strong> most abundant species with Abies balsamea, Acer rubrum, Acer saccharum, Betula<br />
alleghaniensis, Picea glauca, Pinus strobus, and Thuja occidentalis less common. The shrub layer is not welldeveloped<br />
in mature stands with dense canopies, but shrubs are <strong>of</strong>ten abundant in disturbed or young stands.<br />
Shrubs that may be present include Amelanchier spp., Corylus cornuta, Lonicera canadensis, Prunus pensylvanica,<br />
and Vaccinium spp. Common herbaceous species include Clintonia borealis, Coptis trifolia, Cornus canadensis,<br />
Dryopteris carthusiana, Maian<strong>the</strong>mum canadense, Oxalis montana, Trientalis borealis, Viola spp., and o<strong>the</strong>rs.<br />
This community is typically found on wet-mesic areas with imperfectly drained loamy sand, sandy loam, and loam<br />
soils that are <strong>of</strong>ten saturated. These areas occur on gentle slopes, drainageways, and bordering lakes and wetlands.<br />
The nutrient status is generally poor to medium (Kotar et al. 1988).<br />
COMMENTS: 3, MCS. Type probably varies from mixed evergreen-deciduous to evergreen, with at least 25% Tsuga<br />
canadensis present (cover or basal area), and <strong>the</strong> rest ei<strong>the</strong>r hardwoods or some conifers. If Thuja occidentalis is<br />
prominent (>50% cover (or basal area) <strong>of</strong> <strong>the</strong> conifer component), place with Thuja occidentalis white-cedar types,<br />
such as Thuja occidentalis - (Picea mariana, Abies balsamea) / Alnus incana Forest (CEGL002456). Mixed stands <strong>of</strong><br />
Thuja and Tsuga have been identified on <strong>the</strong> Chequamegon National Forest in Wisconsin, and are currently placed<br />
with this Tsuga type until field verification can be conducted (M. Brzeskiewicz pers. comm. 1997). Type may equal<br />
Tsuga canadensis - Betula alleghaniensis / Ilex verticillata / Sphagnum spp. Forest (CEGL006226) in <strong>the</strong> Nor<strong>the</strong>ast,<br />
but would make a broad type. Stands in nor<strong>the</strong>astern <strong>Ohio</strong> are placed with that CEGL006226, found in New York and<br />
<strong>the</strong> nor<strong>the</strong>astern United States. <strong>Ohio</strong> stands have no Rhododendron spp. (at least, not currently), and appear to<br />
resemble CEGL006226 more than CEGL006279. In Michigan this type is found in Gogebic and Iron counties in <strong>the</strong><br />
western Upper Peninsula.<br />
CONSERVATION RANK: G3. This type is fairly widespread in, e.g., Wisconsin, but few good occurrences have been<br />
recorded (E. Epstein pers. comm. 1999).<br />
DISTRIBUTION: This community is found in <strong>the</strong> central Great Lakes region <strong>of</strong> <strong>the</strong> United States and adjacent<br />
Canada, ranging from nor<strong>the</strong>rn Wisconsin to sou<strong>the</strong>rn Ontario.<br />
USFS ECOREGIONS: 212Ha:CCC, 212Hb:CCP, 212Hh:CCP, 212Hl:CCP, 212Hm:CCP, 212Ho:CCP, 212Hr:CCP, 212Ht:CCP,<br />
212Hu:CCP, 212Hv:CC, 212Hw:CCP, 212Ia:C, 212Ja:CPP, 212Jb:CPP, 212Jc:CPP, 212Jf:CPP, 212Jl:CPP, 212Jm:CPP,<br />
212Jn:CPP, 212Jo:CPP, 221Fa:CCC, 221Fb:CCC, 222Ia:CCC, 222Ja:CCC<br />
CONSERVATION REGIONS: 47:P, 48:C, 49:C<br />
STATES: MI OH WI PROVINCES: ON<br />
MIDWEST HERITAGE SYNONYMY: MI rich conifer swamp<br />
OH hemlock-hardwood swamp =<br />
WI nor<strong>the</strong>rn wet-mesic forest (hemlock swamp subtype) =<br />
OTHER SYNONYMY: Tsuga / Maian<strong>the</strong>mum - Coptis (Kotar et al. 1988) =<br />
USNVC HIERARCHY: TSUGA CANADENSIS SATURATED FOREST ALLIANCE (I.A.8.N.g)<br />
PLANT COMMUNITIES OF THE MIDWEST – 2001. APPENDIX: ASSOCIATION DESCRIPTIONS<br />
166