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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Rocky Shores: Great Lakes Alkaline Rocky Shores<br />
Dasiphora fruticosa ssp. floribunda / Clinopodium arkansanum - Argentina anserina - Primula<br />
mistassinica Sparse Vegetation<br />
Shrubby-cinquefoil / Low Calamint - Silverweed - Bird's-eye Primrose Sparse Vegetation<br />
Great Lakes Limestone - Dolostone Bedrock Shore<br />
CEGL002506<br />
DESCRIPTION: These lakeshores are characterized by a zonal gradation <strong>of</strong> plant communities, changing in response<br />
to distance from <strong>the</strong> lake. Typical species found in protected bedrock cracks <strong>of</strong> <strong>the</strong> splash/scrape zone include<br />
Juncus balticus, Argentina anserina (= Potentilla anserina), and Populus balsamifera. The more inland vegetated<br />
zone contains patchy vegetation. Common species include Clinopodium arkansanum (= Calamintha arkansana),<br />
Deschampsia caespitosa, Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda), Dichan<strong>the</strong>lium<br />
acuminatum var. lindheimeri (= Panicum lindheimeri), and species from <strong>the</strong> previous zone. A variety <strong>of</strong> mosses,<br />
including Campylium stellatum, are common throughout this zone. In <strong>the</strong> most inland zone, on sand accumulations or<br />
cobble ridges on <strong>the</strong> bedrock, scattered trees and shrubs are common, including Abies balsamea, Picea glauca,<br />
Populus balsamifera, and Thuja occidentalis (Albert et al. 1995).<br />
The width <strong>of</strong> <strong>the</strong> zone varies with fluctuations in <strong>the</strong> Great Lakes water level. The splash/scrape zone, which<br />
averages 10 m in width, is very sparsely vegetated, with small pools <strong>of</strong> standing water. <strong>Plant</strong> species are typically<br />
found in protected bedrock cracks. A vegetated zone occurs more inland as soil accumulates in and adjacent to<br />
bedrock cracks. Fur<strong>the</strong>r inland, sand accumulations or cobble ridges on <strong>the</strong> bedrock surface provide a suitable<br />
substrate for <strong>the</strong> establishment <strong>of</strong> woody and herbaceous plants.<br />
Wind, waves, and ice action disturb <strong>the</strong> various zones in this community.<br />
COMMENTS: 2, MCS. Note, in Michigan alvar-like communities may be included here. New York occurrences in Lake<br />
Champlain may fit this type. Michigan stands may be split into two types: limestone/dolomite (S3) and volcanic<br />
conglomerate (S3).<br />
CONSERVATION RANK: G3.<br />
DISTRIBUTION: This community occurs along Great Lakes shores in <strong>the</strong> United States and Canada, ranging from<br />
Michigan and Wisconsin to Ontario, and possibly to Minnesota and <strong>Ohio</strong>.<br />
USFS ECOREGIONS: 212Ha:CC, 212He:CCC, 212Hi:CC, 212Hj:CCC, 212Hl:CCP, 212Ja:C, 212Oa:CCC, 212Ob:CCC,<br />
212Pa:CCC<br />
CONSERVATION REGIONS: 48:C<br />
STATES: MI MN OH WI PROVINCES: ON<br />
MIDWEST HERITAGE SYNONYMY: MI bedrock beach-limestone pavement lakeshore =<br />
MN lake beach (lake superior section) bedrock subtype <br />
OH bedrock beach <br />
WI Great Lakes limestone-dolostone bedrock shore =<br />
OTHER SYNONYMY:<br />
USNVC HIERARCHY: OPEN PAVEMENT SPARSE VEGETATION ALLIANCE (VII.A.2.N.a)<br />
PLANT COMMUNITIES OF THE MIDWEST – 2001. APPENDIX: ASSOCIATION DESCRIPTIONS<br />
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