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Urbanizing Flora of Portland, Oregon, 1806-2008.

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dc.creator Christy, John A.
dc.creator Kimpo, Angela
dc.creator Marttala, Vernon
dc.creator Gaddis, Philip K.
dc.creator Christy, Nancy L.
dc.date.accessioned 2012-10-04T23:23:18Z
dc.date.available 2012-10-04T23:23:18Z
dc.date.issued 2009
dc.identifier ISSN: 1523-8520 en_US
dc.identifier.citation Christy, J.A., A. Kimpo, V. Marttala, P.K. Gaddis & N.L. Christy. 2009. Urbanizing flora of Portland, Oregon, 1806-2008. Native Plant Society of Oregon Occasional Paper 3: 1-319. en_US
dc.identifier.uri http://hdl.handle.net/1957/34164
dc.description Second printing with corrections and additions, December 2009. en_US
dc.description.abstract This is an annotated catalog of the vascular flora of Portland and vicinity. It contains 1,553 taxa in 126 families, and compares the historical flora with changes that have occurred since 1925. Sources included additional publications, the herbarium record, and the botanical observations of the authors and contributors. The vascular flora of the Portland-Vancouver area is documented by herbarium specimens and publications dating back to 1806. Urbanization has had inevitable and predictable effects on the region's vegetation. Wetlands have declined locally by 97 percent, coniferous forest by 92 percent, prairie and savanna by 90 percent, riparian and wetland forest by 58 percent, and oak communities of any sort by 40 percent. Open water features declined 49 percent. Old literature and specimens document the floristic composition of some of these vanished habitats. en_US
dc.publisher Native Plant Society of Oregon en_US
dc.relation Oregon Explorer en_US
dc.relation Willamette Explorer en_US
dc.subject Oregon flora en_US
dc.subject Urban flora en_US
dc.subject Vegetation description en_US
dc.subject Botanical collecting en_US
dc.subject.lcsh Botany - Oregon en_US
dc.subject.lcsh Botany - Classification en_US
dc.subject.other Oregon Flora Project en_US
dc.subject.other Native Plant Society of Oregon en_US
dc.subject.other Portland, Oregon en_US
dc.subject.other Vancouver, Washington en_US
dc.title Urbanizing Flora of Portland, Oregon, 1806-2008. en_US
dc.title.alternative Occasional Paper 3 of the Native Plant Society of Oregon en_US
dc.type Technical Report en_US
dc.description.peerreview no en_US
dc.coverage.spatialecoregion Willamette Valley en_US
dc.coverage.spatialcounties Multnomah en_US
dc.coverage.spatialcounties Washington en_US
dc.coverage.spatialoregonplanbasins Willamette en_US
dc.coverage.spatialstates Oregon en_US


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