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DRAFT 6 <br /> Habitat <br /> L. bradshawii is endemic to the central and southern portions of the Willamette Valley in <br /> western Oregon (USFWS 1993), and near LaCamas Lake, Washington. Occurrence has <br /> been documented in three distinct habitat types: (1) shallow, alluvial soils near the <br /> Santiam River; (2) seasonally saturated or flooded prairies along creeks and streams in <br /> the southern Willamette Valley; and (3) wet prairie in the vicinity of LaCamas Lake, <br /> Washington. Most populations are found in seasonal wet prairie habitat in the southern <br /> Willamette Valley, particularly near Eugene. <br /> L. bradshawii occurs in the wet prairies dominated by tufted - hairgrass (Deschampsia <br /> caespitosa). The Deschampsia community is a tall grass prairie type, typically found in <br /> the low, flat, bottomlands of the Willamette Valley (Franklin and Dyrness 1973). Less <br /> that 1% of these native wet prairies have survived since Euroamerican settlement <br /> (Alverson 1994). These areas usually have standing water from October to May. The <br /> soils are uniformly heavy clay with little rock, sand, or gravel present (Kagan 1980). <br /> Native vascular plants associated with this habitat type are listed in Appendix 1. Many <br /> introduced plants are also common in the wet prairie habitat. Common introduced <br /> species found at Willow Creek Preserve, a Deschampsia caespitosa grassland in west <br /> Eugene, are also listed in Appendix 1. Other sensitive plant and animal species often <br />