|
<br />TABLE OF CONTENTS
<br />
<br />ABSTRACT , ,
<br />
<br />111
<br />
<br />ACKNOWLEDGEMENTS, ,
<br />
<br />VI
<br />
<br />CHAPTER I. PURPOSE AND NEED FOR ACTION """"
<br />A THE PROPOSED ACTION
<br />B. BACKGROUND, . , , . , ' . , . . , . , ' . , , , , , , . . ,
<br />
<br />Status ' , , , , , . . , ' . ' , , ' , , ' . ' , , , , , , , , , , , , , , . . ' ,
<br />Current Distribution , , ' , , , . ' , , , , , , , , , , ,
<br />Habitat Requirements ' , ,
<br />
<br />Biology .."",.'.'"""..'.""'..'""",,.'."
<br />Ecological Studies ' , , , , , , , , , , , , . ' , . ' , , , , , , , , . . '
<br />C PURPOSE OF THE PROPOSED ACTION ' , , , , ' , , , , , , , ,
<br />
<br />, I
<br />
<br />, , , , , , , , , I
<br />".."..2
<br />
<br />,.."....2
<br />,,2
<br />, , ,2
<br />
<br />"....3
<br />,3
<br />,,4
<br />
<br />CHAPTER 2: ALTERNATIVES ,"""'"
<br />A EV ALUA TION OF SUIT ABLE HABIT AT
<br />B. ALTERNATIVE SITES CONSIDERED , , , , , . ' , ,
<br />Site Set I. Preferred--sites rated as optimum to acceptable habitat, and low
<br />management concerns ' , , , , , , , , , , , , , , , , , , ' , , , , , , , , , , , , , , , , ' , ' 9
<br />Site Set 2, Sites rated as more desirable habitat, and low-moderate management
<br />concerns .. .. .. ' .. .. , .. , .. .. , .. , .. .. ' .. , .. .. .. .. .. 9
<br />Site Set 3, Sites rated as optimum or more desirable habitat, but with high
<br />management concerns, , , , , , , , , ' , , ' , ' , , , , , , , , , , , , ' , , , 10
<br />Site Set 4, Sites with acceptable biological and environmental conditions, but may
<br />require site modifications ' , , , , , , , , ' , , , , II
<br />C TIMING OF THE PROPOSED ACTION ,,'.,'.' """"""""",12
<br />D, PROPOSED ALTERNATIVES" ""..", ' , , , , .. .. .. 13
<br />Alternative 1 (Preferred), Establish a new population of Kanab arnbersnail in
<br />Grand Canyon National Park" """" , , , , , , , '" , ' ,
<br />Alternative 2, No action (status quo) , ' , " " , , , , , , " ,','"
<br />
<br />, .. , , 5
<br />, , , 5
<br />, .. 8
<br />
<br />13
<br />14
<br />
<br />CHAPTER 3: ENVIRONMENTAL CONSEQUENCES
<br />A NATURAL RESOURCES ""
<br />I, Affected environment " . ' , , , , ,
<br />2, Impacts """",..', , , , , , ,
<br />B, CULTURAL RESOURCES ",'."", """
<br />I, Affected environment " """
<br />2, Impacts """""'.'.',,
<br />C SOCIO-ECONOMIC RESOURCES
<br />I, Affected environment ' , , , , , ,
<br />2. Impacts ' , , , , ,
<br />D, VISITOR USE . ' , . ' . ' , , , , , , ,
<br />
<br />, , , , , , ' . ' , , , , , 14
<br />
<br />, , , , , , ' , "" , , , , , . ' , 14
<br />
<br />, , , , , , , , , , , , ' , , , , , 14
<br />
<br />, , , , , , , , , , , ' , , , , , , , ' 14
<br />
<br />, , , , , , , , , , , , , , , , ' . ' , , , 14
<br />
<br />, , , , , " """",.' 14
<br />
<br />, , , , . . ' , , . ' , , , , , 14
<br />, , , , , ' . ' , 14
<br />
<br />, , , ' " """',' 15
<br />, ' , , , , , , IS
<br />
<br />"""",'.'"""." Hi
<br />
|