Sediment budget for salmonid spawning habitat rehabilitation in a regulated river

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dc.contributor.author Merz, J. E.
dc.contributor.author Pasternack, G. B.
dc.contributor.author Wheaton, Joseph
dc.date.accessioned 2011-05-17T09:21:39Z
dc.date.available 2011-05-17T09:21:39Z
dc.date.issued 2006
dc.identifier.citation Merz, J.E., Pasternack, G.B., Wheaton, J.M. (2006). Sediment budget for salmonid spawning habitat rehabilitation in a regulated river. Geomorphology, 76(1-2): 207-228. en_UK
dc.identifier.uri http://hdl.handle.net/2160/6751
dc.description.abstract Bed elevation, feature adjustments, and spawning use were monitored at three Chinook salmon (Oncorhynchus tschawytscha) spawning habitat rehabilitation sites to measure project longevity in a regulated river. Sites enhanced with 649–1323 m3 of gravel lost from 3–20% of remaining gravel volume annually during controlled flows of 8–70 m3/s and 2.6–4.6% of placed material during a short-duration (19 days) release of 57 m3/s. The oldest site lost ~50% of enhancement volume over 4 years. Of the mechanisms monitored, gravel deflation was the greatest contributor to volumetric reductions, followed by hydraulic scour. Spawning, local scour around placed features, and oversteepened slopes contributed to volumetric changes. As sites matured, volumetric reductions decreased. Sites captured as much large woody debris as was lost. While complexity is an extremely important aspect of ecological function, artificial production of highly diverse and complex habitat features may lead to limited longevity without natural rejuvenatio en_UK
dc.description.sponsorship East Bay Municipal Utility District, the California Department of Fish and Game, and the United States Fish and Wildlife Service through the Central Valley Project Improvement Act Restoration Funds en_UK
dc.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.relation.isreferencedby http://www.gis.usu.edu/~jwheaton/Downloads/Merz_Sedbudget.pdf en_UK
dc.title Sediment budget for salmonid spawning habitat rehabilitation in a regulated river en_UK
dc.type Text en_UK
dc.type.publicationtype refereed published journal paper en_UK
dc.identifier.duplicate True


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