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<br />CONTENTS
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<br />
<br />Foreword "' ......... .......................................................... ...m................................................ ......................___........................ III
<br />Abstrnct...................................................................................................mm........................................................................1
<br />Introduclion....................................................................................................................................mh..................................1
<br />Purpose and Scope ............................................. ......................................................................................................... 2
<br />De.<;criptlon of Study Unit..................................................... ....................................................................................... 2
<br />Acknowledgments.......................................................................................................................................................4
<br />Inventory of Biological and Contaminant Investigallons of Slreams.................................................................................... 4
<br />AI.,I Commun"i"......,......,.........,..................,.............................,...................................,...................................,.., 20
<br />MacrolJ1venebrate Communities ...................................................... .......................................................................... 20
<br />Fi,hCummuni"""..,.....,..."........,..".......,...,..."..."..",,.............,..'...,....'.........,..."..............,...'..".."...,..".........,..".....20
<br />Itabilat CharactenzatlOn ......................................................................................................... ..................................... 24
<br />Contammants in Organism Tis.<;ue ............................................................................................................................... ~4
<br />ContamInants in Bcd Sediment................................................................................................................................... 24
<br />EfTects of Environmenlal Selling on Biological Ct)mmunitics in Streams ........................................................................... 28
<br />N""",I F"lo" ........,..."....,.."..."...,...,..,....'.........,..'"",....."..."......,...,..............,...................'..,...""""..............,..,.." 2&
<br />Hum'n Facto"............,....,......., .....................................................................................,......,....,.............................,.. 29
<br />Summary ......... .................................................................. .............................................. ..................................................... 30
<br />Rd",nm C",d ,...,...........,.....,..."......",..,...,..",............"..",...'...,... '...,..,...."...".."...".. ,...............,..,...,..,...,...,..,...,.."..,.... 3 I
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<br />A
<br />.to.
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<br />:...'
<br />
<br />FIGURES
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<br />1-7. Maps sho.....ing:
<br />I. Location of the Upper Colorado River Basin study unit. physiographic provinces. and major s(reams........... 3
<br />2. General locations of sites sampled for algaJ.community im-estigalions............................................................ 21
<br />3. Gcncmllocalions of sites sampled for macroinvenebrate-commumty mvestigations ...................................... 22
<br />4. Gcnerallocalion... of sItes sllmpled for fish.community invesugations.............................................................. 23
<br />5. General locations of sites sampled for habitat-characterizatIon Investigations ................................................. 25
<br />fl. General locations of sites sampled for contaminants in organism-tissue investigations ................................... 26
<br />7. Genc-rallocations of sites sampled for contaminants in bcd-sediment investigations....................................... 27
<br />
<br />TABLES
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<br />1. LiteralUrc Citations indexc-d by type of biologIcal or cOnlammant investigation. physiographic province.
<br />and predominant land use in the Upper Colorado Riv-er Basin study unil....................................................................... 5
<br />2. Major aquatic biologicalt3xa in the Southem Rocky Mountains and Colorado Plateau physiographic provinces of the
<br />Upper Colorado River Basin study unIt ... .................................................................. .................................................... 28
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<br />CONTENTS V
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