Nearly three quarters of the populations of British Columbia, Washington, and Oregon live within this ecoregion. Habit conversion for human uses has been widespread, reflecting the accessibility, rich natural resources, and economic potential of virtually the entire ecoregion. Additional information on this ecoregion is available from the Washington Biodiversity Council.
The spatial data available here represents the most
basic level of information |
The
Willamette Valley – Puget Trough – Georgia Basin (WPG)
ecoregion is a long stretch of broad valley lowlands and inland sea
girdled by the Cascade and Coastal mountain ranges of British Columbia,
Washington, and Oregon. This ecoregion is comprised of almost 14 million
acres of coastal lowlands, islands, and intermontane lowlands. The
effects of the nearby mountain ranges, influx of ocean currents, and
historic glaciation have caused dramatic localized variations in climate,
soil, and geology. These factors combine to influence a wide array
of ecosystems including coniferous forests, open prairies, and oak
savannas. The marine and a estuarine environments of British Columbia
and Washington are renowned for the tremendous diversity of communities
and species. 