Ecosystem Modeling for Evaluation of Adaptive Management Policies in the Grand Canyon

dc.contributor.authorWalters, Carl J.en_US
dc.contributor.authorKorman, Joshen_US
dc.contributor.authorStevens, Lawrence E.en_US
dc.contributor.authorGold, Barryen_US
dc.coverage.countryUnited Statesen_US
dc.coverage.regionNorth Americaen_US
dc.date.accessioned2009-07-31T14:52:51Z
dc.date.available2009-07-31T14:52:51Z
dc.date.issued2000en_US
dc.date.submitted2008-10-31en_US
dc.date.submitted2008-10-31en_US
dc.description.abstract"An Adaptive Environmental Assessment and Management workshop process was used to assist Grand Canyon scientists and managers in developing conceptual and simulation models for the Colorado ecosystem affected by Glen Canyon Dam. This model examines ecosystem variables and processes at multiple scales in space and time, ranging from feet and hours for benthic algal response to diurnal flow changes, to reaches and decades for sediment storage and dynamics of long-lived native fish species. Its aim is to help screen policy options ranging from changes in hourly variation in flow allowed from Glen Canyon Dam, to major structural changes for restoration of more natural temperature regimes. It appears that we can make fairly accurate predictions about some components of ecosystem response to policy change (e.g., autochthonous primary production, insect communities, riparian vegetation, rainbow trout population), but we are moderately or grossly uncertain about others (e.g., long-term sediment storage, response of native and non-native fishes to physical habitat restoration). Further, we do not believe that existing monitoring programs are adequate to detect responses of native fishes or vegetation to anything short of gross habitat changes. Some experimental manipulations (such as controlled floods for beach/habitat-building) should proceed, but most should await development of better monitoring programs and sound temporal baseline information from those programs."en_US
dc.identifier.citationjournalEcology and Societyen_US
dc.identifier.citationmonthDecemberen_US
dc.identifier.citationnumber2en_US
dc.identifier.citationvolume4en_US
dc.identifier.urihttps://hdl.handle.net/10535/2703
dc.subjectadaptive systemsen_US
dc.subjectColorado Riveren_US
dc.subjectdamsen_US
dc.subjectecosystemsen_US
dc.subjectmodelingen_US
dc.subjectinsectsen_US
dc.subject.sectorSocial Organizationen_US
dc.subject.sectorGeneral & Multiple Resourcesen_US
dc.titleEcosystem Modeling for Evaluation of Adaptive Management Policies in the Grand Canyonen_US
dc.typeJournal Articleen_US
dc.type.publishedpublisheden_US
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