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Aerial Photography Comparison of 1983 High Flow Impact to Vegetation at Eight Colorado River Beaches

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Title	Aerial Photography Comparison of 1983 High Flow Impact to Vegetation at Eight Colorado River Beaches
Description	Report of impacts to riparian or streamside vegetation at eight study plots along the Colorado River in Grand Canyon National Park following the June 3 to August 11, 1983 high water releases from Glen Canyon Dam compared using very large scale (1:250) vegetation maps drawn from 1982 and 1984 aerial photographs. A total of 51 species were identified within five bands deliniated by flows from 14,000 cubic feet per second (cfs) to over 92,500 cfs. Percent cover change from 1982 to 1984 is compared by total species cover, individual species cover within each of the five water zones, and cover of "indicator" or representative, dominant species of the three riparian vegetative communities. Response was varied to inundation, submergence, burial by redeposited sediments, and distance downstream from Glen Canyon Dam. There was a 49% reduction in vegetative cover below the 92,500 flood peak and an 3% increase above the flood peak.;
Subject	Riparian plants -- Colorado River (Colo.-Mexico) Riparian plants -- Grand Canyon National Park (Ariz.) Riparian plants -- Effect of floods on -- Colorado River (Colo.-Mexico) Riparian plants -- Effect of floods on -- Grand Canyon National Park (Ariz.) Glen Canyon Dam (Ariz.) -- Environmental aspects
Creator	Brian, Nancy
Publisher	Published by Glen Canyon Environmental Studies, Bureau of Reclamation, Upper Colorado Region; Available from National Technical Information Service, 1987.
Series	Glen Canyon Environmental Studies GCES/20/87
Language	eng
Contributors	Glen Canyon Environmental Studies
Rights	This is a U.S. Government publication and as such may be used without restriction.
Digital Publisher	Digitized by: Utah State University, Merrill-Cazier Library;
Date Digital	2009-01
Material Type	Government publications Report Electronic books
Type	Text
Format	Text/pdf
Conversion Specifications	Scanned by Utah State University Library using Epson Expression 10000 scanner, 8-bit RGB, at 400 dpi. Archival file is uncompressed TIFF (400 dpi); display file is JPEG (300 dpi) to allow some zoom, while still minimizing file space. OCR text and display pdf generated using CONTENTdm OCR Extension. If pdf does not display correctly, try switching to a different browser or different reader.;
Identifier	aphoto1983
Search Date	1987-05

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