Chapter 16 (Continued) 



Habitat alteration 16-28 



Chemical contaminants 16-29 



Accidental mortality 16-30 



Hunting mortality 16-31 



Other factors 16-31 



IMPORTANCE TO HUMANITY 16-31 



MANAGEMENT RECOMMENDATIONS 16-32 



CASE STUDY: THE BALD EAGLE 16-33 



Introduction 16-33 



Status 16-33 



Taxonomy 16-33 



Historical distribution and abundance 16-33 



Breeding population 16-35 



Wintering population 16-38 



Migration 16-41 



Habitat 16-42 



Characteristics of eagle habitat 16-42 



Food Habits 16-42 



Reproduction 16-43 



Natural Factors of Abundance 16-43 



Human-caused Factors of Abundance 16-44 



Socioeconomic Importance 16-47 



Management 16-47 



Protection 16-47 



Research Needs 16-49 



REFERENCES 16-51 



CHAPTER 17: TERRESTRIAL MAMMALS 17-1 



DATA SOURCES 17-4 



DISTRIBUTION AND ABUNDANCE 17-5 



Regional Distribution 17-5 



Habitat Preferences 17-7 



ROLE OF MAMMALS IN THE ECOSYSTEM 17-12 



FACTORS OF ABUNDANCE 17-15 



Natural Factors Affecting Abundance 17-16 



Human Factors 17-21 



Direct mortality 17-23 



Environmental contaminants 17-28 



IMPORTANCE TO HUMANITY 17-28 



MANAGEMENT 17-31 



REFERENCES 17-34 



CHAPTER 18: REPTILES AND AMPHIBIANS 18-1 



DISTRIBUTION AND ABUNDANCE 18-3 



HABITAT PREFERENCES 18-3 



BREEDING HABITS 18-4 



FOOD HABITS 18-6 



FACTORS OF ABUNDANCE 18-7 



Natural Factors 18-7 



Human Factors 18-7 



Agriculture . 18-7 



Pollution 18-7 



vii 



