The Nature Trust of British Columbia
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Cornus stolonifera,COST, 2 Red-osier dogwoodEquisetum arvense,EQAR, 2 Field horsetail Gallium boreale,GABO, 2 Northern bedstraw Hordeum jubatum,HOJU, 1 Foxtail barley Hordeum vulgare,HOVU, 1 Barley Juncus spp.,JUNC, 1 Rush species Lepidiem densiflorum,LEDE, 2 Field peppergrass Medicago sativa,MESA, 2 Alfalfa Phalaris arundinacea,PHAR, 1 Reed canarygrass Phleum pratense,PHPR, 1 Timothy
--------------------------------------------------------------------------------------------------------- Picea glauca,PIGL, 3 Hybrid white spruce Pinus ponderosa,PIPO, 3 Ponderosa pine Potentilla anserina,POAN, 2 Silverweed Poa compressa,POCO, 1 Canada bluegrass Poa pratensis,POPR, 1 Kentucky bluegrass Poa spp.,POSP, 1 Bluegrass Populus balsamifera,POBA, 3 Black cottonwood Populus tremuloides,POTR, 3 Trembling aspen Prunus virginiana,PRVI, 3 Chokecherry Rosa acicularis,ROAC, 3 Prickly rose Rosa woodsii,ROWO, 3 Prairie rose Scirpus cespitosus,SCCE, 1 Tufted clubrush Smilacina stellata,SMST, 2 Star-flowered false solomon’s-seal Symphoricarpus albus,SYAL, 3 Snowberry Taraxacum officinale,TAOF, 2 Dandelion Thlaspi arvense,THAR, 2 Pennycress The natural plant community tracking list is incomplete since there is not yet enough data available for the CDC to rank all of the rare natural plant communities in B.C. This applies especially to many wetland, alpine, and grassland plant communities. This year, the Ministry of Forests will be classifying grassland and wetland plant communities throughout B.C., and this will enable the CDC to produce a more comprehensive natural plant community tracking list. In preparation for this, the rarity ranks of those wetland and grassland plant communities already on the tracking list have the "Q" modifier (e.g. S2Q) to indicate that their classification is about to change. Their names and ranks will be updated after the classification is completed. Until then, they will be retained on "interim" red and blue lists to indicate that there are conservation concerns for these plant communities which will probably also apply to the corresponding plant communities in the new classification. Please note that all ranks reflect the rarity of plant community occurrences that have not been disturbed by humans or domestic animals, and are in a natural or "climax" state. Do not confuse these natural plant communities with successional plant communities (e.g. second-growth Douglas-fir and salal forests), or with degraded plant communities (e.g. a weedy bluebunch wheatgrass and junegrass grassland). However, be aware that for the purposes of conservation, disturbed occurrences of rare plant communities may be ecologically valuable if there are few or no natural, undisturbed occurrences left in the Province (e.g. Garry Oak plant communities). Please visit the CDC's Ecology web page (www.elp.gov.bc.ca/rib/wis/cdc/ecology.htm) or contact the CDC for more information on rare natural plant communities and rare natural plant community conservation.
10 Natural Plant Communities Listed Biogeoclimatic Ecosystem Classification (BEC) Unit(s): This column gives the BEC unit(s) in which each plant community can occur. These units are described in the Ministry of Forests’ "Field Guide to Site Identification and Interpretation" for the appropriate Forest Region. Please note that the BEC units listed are for the entire Forest Region, and may not all occur in this Forest District. Units numbered "00" have not yet been assigned site series numbers by the Ministry of Forests. Site series are NOT equivalent to natural plant communities as defined by the CDC; visit the CDC's Ecology web page (www.elp.gov.bc.ca/rib/wis/cdc/ecology.htm) for an explanation. Successional Status: This column indicates the successional status of each natural plant community. Natural plant communities are, almost without exception, climax plant communities. Younger successional stages are considered to be different plant communities, though they may eventually develop into climax plant communities. For more information on successional status, visit the CDC's Ecology web page (www.elp.gov.bc.ca/rib/wis/cdc/ecology.htm) or consult the Field Manual for Describing Terrestrial Ecosystems (www.for.gov.bc.ca/RIC/Pubs/teEcolo/fmdte/deif.htm).
Structural Stage: This column indicates the structural stage(s) of each natural plant community. Similar plant communities at younger structural stages are considered to be different plant communities, though they may eventually develop into natural plant communities. For definitions, see the Field Manual for Describing Terrestrial Ecosystems (www.for.gov.bc.ca/RIC/Pubs/teEcolo/fmdte/deif.htm).
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