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https://ir.library.oregonstate.edu/concern/articles/bc386k96w

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  • Dams impound the majority of rivers and provide important societal benefits, especially daily water releases that enable on-peak hydroelectricity generation. Such “hydropeaking” is common worldwide, but its downstream impacts remain unclear. We evaluated the response of aquatic insects, a cornerstone of river food webs, to hydropeaking using a life history–hydrodynamic model. Our model predicts that aquatic-insect abundance will depend on a basic life-history trait—adult egg-laying behavior—such that open-water layers will be unaffected by hydropeaking, whereas ecologically important and widespread river-edge layers, such as mayflies, will be extirpated. These predictions are supported by a more-than-2500-sample, citizen-science data set of aquatic insects from the Colorado River in the Grand Canyon and by a survey of insect diversity and hydropeaking intensity across dammed rivers of the Western United States. Our study reveals a hydropeaking-related life history bottleneck that precludes viable populations of many aquatic insects from inhabiting regulated rivers.
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  • description.provenance : Submitted by Open Access (openaccess@library.oregonstate.edu) on 2016-08-24T14:29:40Z No. of bitstreams: 2 KennedyFlowManagementHydropower.pdf: 2168636 bytes, checksum: 27d3f35a2a6f1032a8656b246044eeb6 (MD5) KennedyFlowManagementHydropowerSupplement.pdf: 342737 bytes, checksum: be882a1f0ef5d0aa68688f8c64fa8441 (MD5)
  • description.provenance : Made available in DSpace on 2016-08-24T14:37:17Z (GMT). No. of bitstreams: 3 krauserp335256240.zip: 2134985 bytes, checksum: ae480030af1495b8524b5464d980090c (MD5) KennedyFlowManagementHydropower.pdf: 2168636 bytes, checksum: 27d3f35a2a6f1032a8656b246044eeb6 (MD5) KennedyFlowManagementHydropowerSupplement.pdf: 342737 bytes, checksum: be882a1f0ef5d0aa68688f8c64fa8441 (MD5) Previous issue date: 2016-07
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-08-24T14:37:17Z (GMT) No. of bitstreams: 3 krauserp335256240.zip: 2134985 bytes, checksum: ae480030af1495b8524b5464d980090c (MD5) KennedyFlowManagementHydropower.pdf: 2168636 bytes, checksum: 27d3f35a2a6f1032a8656b246044eeb6 (MD5) KennedyFlowManagementHydropowerSupplement.pdf: 342737 bytes, checksum: be882a1f0ef5d0aa68688f8c64fa8441 (MD5)

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