Hydrological Alteration along the Missouri River Basin: A Time Series Approach

dc.contributor.author Pegg, Mark
dc.contributor.author Pierce, Clay
dc.contributor.author Roy, Anindya
dc.contributor.department Animal Ecology
dc.date 2018-02-16T13:33:23.000
dc.date.accessioned 2020-06-29T22:44:44Z
dc.date.available 2020-06-29T22:44:44Z
dc.date.issued 2003-01-01
dc.description.abstract <p>Human alteration of large rivers is commonplace, often resulting in significant changes in flow characteristics. We used a time series approach to examine daily mean flow data from locations throughout the mainstem Missouri River. Data from a pre-alteration period (1925–1948) were compared with a post-alteration period (1967–1996), with separate analyses conducted using either data from the entire year or restricted to the spring fish spawning period (1 April–30 June). Daily mean flows were significantly higher during the post-alteration period at all locations. Flow variability was markedly reduced during the post-alteration period as a probable result of flow regulation and climatological shifts. Daily mean flow during the spring fish spawning period was significantly lower during the post-alteration period at the most highly altered locations in the middle portion of the river, but unchanged at the least altered locations in the upper and lower port ions of the river. Our data also corroborate other analyses, using alternate statistical approaches, that suggest similar changes to the Missouri River system. Our results suggest human alterations on the Missouri River, particularly in the middle portion most strongly affected by impoundments and channelization, have resulted in changes to the natural flow regime.</p>
dc.description.comments <p>This article is from <em>Aquatic Sciences</em> 65 (2003): 63, doi:<a href="http://dx.doi.org/10.1007/s000270300005" target="_blank">10.1007/s000270300005</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/aecl_pubs/1/
dc.identifier.articleid 1000
dc.identifier.contextkey 7225909
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aecl_pubs/1
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1880
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/aecl_pubs/1/2003_Pierce_HydrologicalAlterationMissouri.pdf|||Fri Jan 14 17:31:50 UTC 2022
dc.source.uri https://lib.dr.iastate.edu/cgi/viewcontent.cgi?article=1115&context=nrem_pubs
dc.subject.disciplines Aquaculture and Fisheries
dc.subject.disciplines Natural Resources Management and Policy
dc.subject.disciplines Terrestrial and Aquatic Ecology
dc.subject.keywords hydrology
dc.subject.keywords time series
dc.subject.keywords human alteration
dc.title Hydrological Alteration along the Missouri River Basin: A Time Series Approach
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isOrgUnitOfPublication dc916ec7-70d9-48fc-a9b4-83f345e17b12
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