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Chum salmon spawning habitat report for the Clatskanie River and Scappoose Creek populations

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TitleChum salmon spawning habitat report for the Clatskanie River and Scappoose Creek populationsPersonal NameAlfonse, BrianHomel, Kris M. 1979-Nunnally, James E.Suring, Erik J.Corporate NameOregon Department of Fish and WildlifeSubjectChum salmon -- Monitoring -- Oregon -- Clatskanie River WatershedChum salmon -- Sampling -- Oregon -- Clatskanie River WatershedDate2017CollectionFish & Wildlife Last edited by: Angie Jannelli

LanguageengPublisherOregon Department of Fish and WildlifePlace of PublicationClackamas, ORFormonline resourceExtent1 online resource (196 pages)Type of ResourcetextIssuancemonographicSummaryHistorically, Chum Salmon represented a significant portion of the annual returns of salmon and steelhead to the lower Columbia River. It is thought that 10-15 million salmon and steelhead returned annually (Gresh et al. 2000), of which Chum Salmon may have comprised 7-10% of the return (NPPC 1986). The earliest estimate of abundance of Chum Salmon comes from commercial catch data; in 1928, over 700,000 Chum Salmon were captured (Smith 1979), which may have represented a population of over a million Chum Salmon (NPPC 1986). Beginning in the early 1800s, settlement along the lower Columbia River (LCR) and tributaries resulted in changes to land use and harvest of Chum Salmon that ultimately led to the extirpation of 90% of Chum Salmon populations in the LCR. By the 1950s, returns to the lower Columbia River numbered in the thousands. In response to these dramatic declines, all populations of Columbia River Chum Salmon were listed as "threatened" under the Endangered Species Act in 1999 (USFWS 1999) as a single evolutionary significant unit (ESU). At the time of listing, 17 historic populations were recognized (Myers et al. 2003, USFWS 1999) and all but two of them (the Grays River and lower gorge populations) were considered extirpated (Kostow 1995). Following listing, Oregon developed the Chum Recovery Strategy (ODFW 2010), which outlined the overall approach towards restoring Chum Salmon populations. In preparing that recovery strategy, it was determined that very little historical data existed on Chum Salmon distribution and abundance within the lower Columbia River. Moreover, it was unclear which specific limiting factors existed within each historical population and whether those limiting factors had been addressed. To address these critical uncertainties, Oregon created a Chum Salmon Reintroduction Project in 2012. The goals of the Chum Salmon Reintroduction Project are to identify and address factors that limit the abundance of Chum Salmon, restore habitat to promote natural recolonization, and reintroduce Chum Salmon into locations where they do not currently exist. As such, baseline habitat surveys were completed in all populations within the coastal stratum (Youngs Bay, Big Creek, Clatskanie River, and Scappoose Creek). This report summarizes data collected during these surveysNoteprepared by Brian Alfonse, Kristen Homel, Ph.D., James E. Nunnally, and Erik SuringIncludes bibliographical references (page 6)Text in English

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Library ClassificationFWOCLC Number1457048501Restrictions on Accesshttp://rightsstatements.org/vocab/CNE/1.0/