Evaluating Cumulative Ecosystem Response to Restoration Projects in the Lower Columbia River and Estuary, 2009

Johnson, Gary E. ; Diefenderfer, Heida L. ; Borde, Amy B. ; Bryson, Amanda J. ; Cameron, April ; Coleman, Andre M. ; Corbett, C. ; Dawley, Earl M. ; Ebberts, Blaine D. ; Kauffman, Ronald ; Roegner, G. Curtis ; Russell, Micah T. ; Silva, April ; Skalski, John R. ; Thom,

关键词: ADDITIVES;    COLUMBIA RIVER;    ECOSYSTEMS;    EVALUATION;    FISHERIES;    HABITAT;    JUVENILES;    SWAMPS;    US CORPS OF ENGINEERS;   

DOI  :  10.2172/1009755
RP-ID  :  PNNL-19440
PID  :  OSTI ID: 1009755
Others  :  Other: 400403209
Others  :  TRN: US201108%%412

学科分类：环境科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

This is the sixth annual report of a seven-year project (2004 through 2010) to evaluate the cumulative effects of habitat restoration actions in the lower Columbia River and estuary (LCRE). The project, called the Cumulative Effects Study, is being conducted for the U.S. Army Corps of Engineers Portland District (USACE) by the Marine Sciences Laboratory of the Pacific Northwest National Laboratory (PNNL), the Pt. Adams Biological Field Station of the National Marine Fisheries Service (NMFS), the Columbia River Estuary Study Taskforce (CREST), and the University of Washington. The goal of the Cumulative Effects Study is to develop a methodology to evaluate the cumulative effects of multiple habitat restoration projects intended to benefit ecosystems supporting juvenile salmonids in the 235-km-long LCRE. Literature review in 2004 revealed no existing methods for such an evaluation and suggested that cumulative effects could be additive or synergistic. From 2005 through 2009, annual field research involved intensive, comparative studies paired by habitat type (tidal swamp versus marsh), trajectory (restoration versus reference site), and restoration action (tidegate replacement vs. culvert replacement vs. dike breach).