Technical Report

 

Vascular Plant Inventory for Lewis and Clark National Historical Park : Public Version Public Deposited

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https://ir.library.oregonstate.edu/concern/technical_reports/7p88cn02x

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  • A study to review the status and distribution of vascular plants at Lewis and Clark National Historical Park was initiated in 2009 and completed in 2010 by the Oregon Natural Heritage Information Center at Oregon State University. This study built on previous inventories conducted under the National Park Service‘s Inventory and Monitoring Program which was initiated in 1992 to collect baseline data on the number and status of biological resources within the parks (National Park Service 2001). The North Coast and Cascades Network of national parks conducted vascular plant inventories in seven Pacific Northwest parks from 1999 to 2003 (Rochefort et al. 2009). At that time, inventories focused on the lands included within Fort Clatsop National Memorial (FOCL), documenting 246 vascular plant species. In 2004 the Fort Clatsop National Memorial was expanded to become Lewis and Clark National Historical Park (LEWI), encompassing several units of state and federal parkland in Oregon and Washington. As this expansion occurred after completion of the initial vascular plant inventory of FOCL, vascular plant species present in the new park units had yet to be documented. Field surveys were completed between February 2009 and September 2010. Species new to the park were documented with specimen vouchers, GPS locations, and field notes. Point locations and population estimates were made for rare species and for non-native, invasive species of concern. Locations of rare communities were noted. Existing vouchers in the LEWI herbarium were verified and re-labeled with up-to-date nomenclature, mis-identifications were annotated, and species were keyed to variety or subspecies where applicable. Upon completion of field work and data mining research, an additional 180 species were documented as occurring within the legislative boundary of the park, bringing the total number of vascular species to 467. In addition, the locations of six rare community types, 10 rare species, and 18 non-native species of concern were mapped in park units. These mapped species are discussed in detail and management strategies are presented. An annotated checklist of the vascular plants of the park documents each species recorded for the park and describes their range, nativity, population size within the park, and associated habitats.
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  • Wise, L. K., and J. Kagan. 2012. Vascular plant inventory for Lewis and Clark National Historical Park: Public version. Natural Resource Technical Report NPS/LEWI/NRTR—2012/603.N. National Park Service, Fort Collins, Colorado.
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