Since 1984
  • CAROLINIAN CANADA

 

The 58 Rare Vegetation Communities in the Carolinian Zone (Site Region 7E)

Common Name Provincial Rank Global Rank
Moist - Fresh Pin Oak - Bur Oak Tallgrass Savannah Type S1 G1
Canada Bluegrass - Nodding Onion Alvar Grassland Type S1 G1?
Chinquapin Oak - Nodding Onion Treed Alvar Grassland Type S1 G1?
Cottonwood Dune Savannah Type S1 G1G2
Moist - Fresh Black Oak - White Oak Tallgrass Woodland Type S1 G2
Moist - Fresh Tallgrass Prairie Type S1 G2
Moist - Fresh Tallgrass Prairie Type S1 G2
Moist - Fresh Black Oak Tallgrass Savannah Type S1 G2
Huckleberry Organic Thicket Swamp Type S1 G2Q
Dry Black Oak Tallgrass Savannah Type S1 G3
Dry Tallgrass Prairie Type S1 G3
Perched Mineral Prairie Fen Type S1 G3G4
Dry Black Oak - White Oak Tallgrass Woodland Type S1 G?
Graminoid Coastal Meadow Marsh Type S2 G2?
Basswood - White Ash - Butternut Moist Treed Limestone Talus Type S2 G3G5
Dry Herbaceous Limestone / Dolostone Talus S2 G?
Little Bluestem - Switchgrass - Beachgrass Dune Grassland Type S2 G?
Juniper Dune Shrubland Type S2 G?
Hemlock - Sugar Maple Moist Limestone Talus Type S2 G?
Wet Herbaceous Limestone / Dolostone Talus S2 G?
Dry - Fresh Hackberry Deciduous Forest Type S2 G?
Pin Oak Mineral Deciduous Swamp Type S2S3 G2
Sea Rocket Sand Beach Type S2S3 G2G4
Moist - Fresh Black Walnut Deciduous Forest Type S2S3 G4?
White Cedar Treed Limestone Cliff Type S3 G2Q
Sugar Maple Moist Treed Limestone Talus Type S3 G3G5
White Birch Dry Treed Limestone Talus Type S3 G3G5
Buttonbush Organic Thicket Swamp Type S3 G4
Poison Sumac Organic Thicket Swamp Type S3 G4?
Dry Black Oak Deciduous Forest Type S3 G4?
Bulblet Fern - Herb Robert Open Shaded Limestone / Dolostone Cliff Face Type S3 G5
Cliffbrake - Lichen Open Unshaded Limestone / Dolostone Cliff Face Type S3 G5
White Cedar Dry Treed Limestone Talus Type S3 G?
Round-leaved Dogwood Open Limestone / Dolostone Cliff Rim Shrubland Type S3 G?
Mountain Maple Open Limestone Talus Shrubland Type S3 G?
Sugar Maple - Ironwood - White Ash Treed Limestone Cliff Type S3 G?
Open Limestone / Dolostone Seepage Cliff Type S3 G?Q
Moist - Fresh Sugar Maple - Black Maple Deciduous Forest Type S3? G?
Dry Oak - Hickory Deciduous Forest Type S3S4 G4?
Dry - Fresh Hickory Deciduous Forest Type S3S4 G4?
Dry - Fresh Mixed Oak Deciduous Forest Type S3S4 G?
White Cedar - Hemlock Coniferous Mineral Swamp Type S3S4 G?
Shrubby Cinquefoil Shrub Fen Type S4 G3G4
Common Reed Grass Organic Shallow Marsh Type S4 G3G4
Dry - Fresh White Oak Deciduous Forest Type S4 G?
Moist - Fresh Hemlock - Sugar Maple Mixed Forest Type S4S5 G4G5
Tamarack Coniferous Organic Swamp Type S5 G4
White Cedar Coniferous Organic Swamp Type S5 G4
Silver / Red Maple Mineral Deciduous Swamp Type S5 G4?
White Cedar - Tamarack Coniferous Organic Swamp Type S5 G4G5
Dry - Fresh White Pine - Oak Mixed Forest Type S5 G4G5
Leatherleaf Shrub Bog Type S5 G5
Water Lily - Bullhead Lily Floating-leaved Shallow Aquatic Type S5 G5
Fresh Sugar Maple Deciduous Forest Type S5 G5?
Dry - Fresh Red Oak Deciduous Forest Type S5 G?
Red / Green Ash Mineral Deciduous Swamp Type S5 G?
White Elm Mineral Deciduous Swamp Type S5 G?
Dry - Fresh Oak - Sugar Maple Deciduous Forest Type S5 G?

Global Rank (GRANK) Global ranks are assigned by a consensus of the network of Conservation Data Centres, scientific experts,and The Nature Conservancy to designate a rarity rank based on the range-wide status of a species, subspecies or variety. The most important factors considered in assigning global (and provincial) ranks are the total number of known, extant sites world-wide, and the degree to which they are potentially or actively threatened with destruction. Other criteria include the number of known populations considered to be securely protected, the size of the various populations, and the ability of the taxon to persist at its known sites. The taxonomic distinctness of each taxon has also been considered. Hybrids, introduced species, and taxonomically dubious species, subspecies and varieties have not been included.

Provincial Rank (SRANK) Provincial (or Subnational) ranks are used by the Natural Heritage Information Centre to set protection priorities for rare species and natural communities. These ranks are not legal designations. Provincial ranks are assigned in a manner similar to that described for global ranks, but consider only those factors within the political boundaries of Ontario. By comparing the global and provincial ranks, the status, rarity, and the urgency of conservation, needs can be ascertained. The NHIC evaluates provincial ranks on a continual basis and produces updated lists at least annually.

The table summarizes information obtained from the Natural Heritage Information Centre (NHIC). Ranks are revised as new information becomes available and users should consult the NHIC web site for the most up to date information.

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