Wednesday 4 October 2017

WW: Oak prairie

(When settlers first came here, most of the Puget Sound Basin was prairie, in two configurations: grassland, with few trees, and parkland, covered with Garry oak [Quercus garryana]. As I've mentioned elsewhere, oak trees are perishing rare on the West Coast of North America, and that, plus the fact that these oak-covered savannahs support greater biodiversity than any other ecosystem in the region, has garnered a lot of commentary over the years.

Prairie is not, however, a natural phenomenon in these parts; for millennia the entire 1000-mile habitat was maintained by the First Nations via strategic firing. When the newcomers prevented them from continuing, it largely vanished under an invasive forest dominated by Douglas fir [
Pseudotsuga menziesii]. Post-war over-development has all but erased what remained.

So today very little of the oak prairie that once stretched unbroken from Central California into British Columbia is left; none, to my knowledge, is protected. Including this 40-to-80 acre example, on the plat of a massive new retirement estate.)

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