TABLE OF CONTENTS 



LIST OF FIGURES i^- 



LIST OF TABLES ^^^ 



LIST OF APPENDICES ^-y 



INTRODUCTION 1 



METHODS 3 



Aerial Production 3 



Frequency and Canopy-Coverage .'.*.*.*.'.* 3 



Species Density '.'.'.'.'.'...'. 3 



Silver Sagebrush Density .*.*.*.*!.* 3 



Climate and Readily Available Soil Moisture !'.!'.!! 4 



Vascular Plant Collections .*.*.*.*." 4 



RESULTS AND ANALYSIS 



5 



Aerial Production 5 



Frequency and Canopy-Coverage '.'.'. 5 



Species Density .*.*.*.'.*.*.'.*.* 14 



Silver Sagebrush Density i !!!!!!!*. *. 14 



Climate and Readily Available Soil Moisture .*.*.*.*.* .* 14 



Vascular Plant Collections . . . 15 



DISCUSSION AND RECOMMENDATIONS 18 



ACKNOWLEDGMENTS 19 



LITERATURE CITED 20 



