Ministry of Environment
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Report: Sensitive Ecosystems Inventory (SEI): East Vancouver Island and the Gulf Islands (includes 2002 Disturbance Mapping)

Report Documents
Map Plotfiles
  • No files of this type available
Data Files
  • EcoCat_readme  Provides information on using data files for this project  (pdf/26.2 Kb)
  • SEI Data Dictionary  Provides descriptions of database fields and values.  (pdf/84.3 Kb)
  • SEI Field Inspection Data (mdb)  Database includes ecosystem attributes and field plot data. Download Instructions for opening the along with the database.  (zipp/1.8 Mb)
  • SEI polygons attributes  SEI non-spatial polygon information (attributes)  (csv/2 Mb)
Digital Map Files
Image Document
Video Files
  • No files of this type available
All Documents

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  • If you have any questions on the information presented, or require additional report data or attachments, please contact the Report Contact

The Sensitive Ecosystems Inventory for East Vancouver Island and Gulf Islands completed in 1993-97, mapped seven natural ecosystems and two other ecosystems important for biodiversity. The disturbance mapping used 2002 air photos to identify areas of the original polygons that had been disturbed and attempted to improve mapping of riparian areas. The study area is located on the eastern coastal lowland of Vancouver Island from Campbell River to Sooke, and includes the adjacent Gulf Islands.

Author:  Canadian Wildlife Service and BC Ministry of Environment

Old Reference Number:  9914 redigitizing, 4206 original

Old Reference System:  BAPID

Date Published:  Jun 1998

Report ID:  2124

Audience:  Government and Public

The study area is situated in the Nanaimo Lowland (NAL), Southern Gulf Islands (SGI) and Strait of Georgia (SOG) Ecosections and include the Coastal Douglas-fir (CDF) and the Coastal Western Hemlock (CWH) biogeoclimatic zones. The project files available are a project report, two spatial file and a digital map file. Results of this disturbance mapping show a disturbing trend. Over 8,800 ha (11%) of the area occupied by the nine SEI ecosystem types in the early 1990s had been disturbed by 2002. Over 1480 ha of disturbed area had originally been occupied by the seven sensitive ecosystems. Older forests had the highest rate of loss at 8.6% (915 ha) followed by riparian (4.6%), woodland (2.6%) and wetland (2.0%) ecosystems. The largest area of loss was 7,360 ha (16.4%) in the older second growth forest category. Losses due to fragmentation are currently being assessed and will add to these totals.

Report Type
  Terrestrial Information
  Region - Vancouver Island
  Terrestrial Information - Sensitive Ecosystem Inventory (SEI)

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