A 497 page, April 2004, book from the Grasslands Conservation Council of British Columbia.

From the Preface:
"The Grasslands of British Columbia provides a comprehensive source that synthesizes ecological information for grasslands in each region  of  the  province.  It also provides information on grassland plant and animal species at risk and other wildlife that depend on grassland  habitats. This report complements the Geographic Information System that the Grasslands Conservation Council of British Columbia has developed to map the abundance, distribution and status of provincial grasslands."

See the Book [PDF @15MB].