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GRASSES
OF THE COLUMBIA BASIN OF BRITISH COLUMBIA The plant species checklist was developed using the specimen database at the Royal British Columbia Museum Herbarium (V). At the Herbarium, specimen data is maintained on a FOXPRO database that has been updated and annotated by specialists to reflect the recent changes in grass taxonomy. Each record in the checklist has an associated specimen housed at the Herbarium, except in the case of some of the Red and Blue Listed specimens described in Douglas et al. (1998). In most cases, the names follow Douglas et al. (1994). The names of some genera were changed to reflect changes in taxonomic thinking and to reflect the changes which will be included in the Manual of Grasses of North America (to be released in the near future by Barkworth et al.) The maps were generated using a Geographic Information System (ARCVIEW 3.0a) from the geographic coordinates in the database records. The basemap is from the Watershed Atlas data available in digital format from the Ministry of Environment Lands and Parks website. The basemap data was digitized from NTS 1:50,000 mapsheets and converted to NAD 83 format in 1996. It is in Albers Equal Area Conic projection. The watershed base map was clipped to the study area determined by the Living Landscapes program at the Royal British Columbia Museum. Point data from the database was added to the basemap and a distribution map was generated for each species. The points represent actual specimen locations and can be traced back to the database and a herbarium sheet. Many species that show limited distribution may prove to be more widely distributed as a result of more extensive field work. The maps should be used as a guide to where specimens have been collected but in no way reflect the only places where the species can be observed. |
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