Technical Report
 

Survey of the Ecological Condition and Functions of Enhanced, Restored, and Reference Wetlands in the Willamette Valley, Oregon

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https://ir.library.oregonstate.edu/concern/technical_reports/8k71np185

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Abstract
  • In a series of Willamette Valley wetlands, standardized protocols were used in 2009 and 2010 to primarily assess (a) vegetation species composition and (b) relative levels of ecosystem services. Of the 60 wetlands visited in one or both years, 34 were classified as riverine and 26 as flats. Of the 34 riverine wetlands, 21 are believed to be restored or enhanced. Of the 26 flats wetlands, 20 are believed to be restored or enhanced. Also, 13 riverine and 6 flats wetlands that to our knowledge have not been recently restored or enhanced were visited to provide reference data. No opportunities were identified to make before‐and‐after comparisons of restoration or enhancement practices during the two‐year span of this project. All the surveyed wetlands were ones that had a significant area of surface water that persisted at least through early June. No sites that were entirely wet prairies or vernal pools were surveyed. Aquatic plants located in places where water was deeper than about 2 feet were not surveyed. The protocols were applied by the same person (the author) during a single visit each year. Additionally and in 2009 only, selected compounds in the soil from each site were analyzed. Statistical analyses investigated correlations among measured variables.
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Citation
  • Adamus, P.R. 2010. Survey of the Ecological Condition and Functions of Enhanced, Restored, and Reference Wetlands in the Willamette Valley, Oregon. Report to Oregon Watershed Enhancement Board and Oregon Department of State Lands, Salem, Oregon.
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  • Oregon Watershed Enhancement Board, USEPA
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  • Report to the Oregon Watershed Enhancement Board; Salem, Oregon

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file details Adamus_2010_Willamette_Wetlands_Vegetation_Survey_OWEB.pdf 2018-01-11 Público Descargar