Regional comparisons Garry oak woodlands are the most provincially rare and endangered of the three ecosystems. The few remnant good quality sites in the Capital Region are, therefore, high provincial conservation priorities. Although one-third of remnant ecosystems are in parks, parks do not necessarily protect ecosystems. Most parks are fragments of original ecosystems, and may not be large enough to support native species. Development adjacent to parks can further fragment the ecosystem.
Similar threats exist outside parks.
In addition, lands may be cleared and developed for housing, industry, commerce and agriculture, destroying the remnant habitats.