For centuries, wildlife has suffered because of the actions of human beings. Increasingly efficient weaponry—bows, rifles, shotguns—made it easier for people to kill game. ("Game" may be broadly defined as any fish, birds, or mammals that are hunted noncommercially for food, sport, or both.) Some species of animals have been hunted to extinction. Forests have been cleared, swamps drained, and rivers dammed to clear the way for agriculture and industry. These activities have harmed or destroyed large areas of plant and wildlife habitat.
Beginning in the late 19th century, growing concern for vanishing wildlife led to the initiation of comprehensive conservation actions. The governments of the United States and other nations have since passed protective laws and set aside national parks and other reserves for wildlife.
The principal agency assigned to the conservation and enhancement of animals and their habitats in this country is the U.S. Fish and Wildlife Service. An agency of the U.S. Department of the Interior, it is responsible for the scientific development of commercial fisheries and the conservation of fish and wildlife. The service, which was created in 1856, manages the 150 million-acre National Wildlife Refuge System. This system includes more than 560 National Wildlife Refuges, thousands of smaller wetlands, and other special management areas. It also operates 70 National Fish Hatcheries, 65 fishery resource offices, nine fish health centers, seven fish technology centers, one National Historic fish hatchery, and 86 ecological services field stations.
- Agricultural Scientists
- Air Quality Engineers
- Ambassadors
- Animal Behaviorists
- Animal Breeders and Technicians
- Animal Caretakers
- Animal Handlers
- Animal Trainers
- Antiques and Art Dealers
- Aquarists
- Arborists
- Archaeologists
- Archivists
- Automotive Dealership Owners and Sales Managers
- Aviation Safety Inspectors
- Bailiffs
- Bank Examiners
- Biochemists
- Bioenergy/Biofuels Workers
- Biofuels Processing Technicians
- Biofuels Production Managers
- Biofuels/Biodiesel Technology and Product Development Managers
- Biologists
- Biomass Plant Technicians
- Biomass Power Plant Managers
- Border Patrol Agents
- Botanists
- Brownfield Redevelopment Specialists and Site Managers
- Buyers
- Campaign Workers
- Chemists
- Chief Sustainability Officers
- City Managers
- Civil Engineers
- Commodities Brokers
- Congressional Aides
- Construction Inspectors
- Corporate Climate Strategists
- Cryptographic Technicians
- Cultural Advisers
- Customs Brokers
- Customs Officials
- Demographers
- Deputy U.S. Marshals
- Ecologists
- Economists
- Energy Conservation Technicians
- Energy Consultants
- Environmental Economists
- Environmental Education Program Directors
- Environmental Engineers
- Environmental Lawyers
- Environmental Lobbyists
- Environmental Planners
- Environmental Restoration Planners
- Environmental Scientists
- Environmental Technicians
- EPA Special Agents
- Export-Import Specialists
- FBI Agents
- Federal and State Officials
- Foreign Service Officers
- Foresters
- Forestry Technicians
- Fraud Examiners, Investigators, and Analysts
- Futurists
- Geological Technicians
- Geologists
- Geophysicists
- Grain Merchants
- Green Builders
- Green Hotel/Resort Ecomanagers
- Green Products Manufacturers
- Green Transportation Careers
- Groundwater Professionals
- Hazardous Waste Management Specialists
- Hazardous Waste Management Technicians
- Health and Regulatory Inspectors
- Historians
- Horticultural Inspectors
- Horticultural Technicians
- Hydropower and Marine Energy Industry Workers
- Industrial Ecologists
- Intelligence Officers
- Interpreters
- Land Acquisition Professionals
- Land Trust or Preserve Managers
- Landscape Architects
- Landscapers and Grounds Managers
- Lobbyists
- Marine Biologists
- Merchant Mariners
- Methane/Landfill Gas Collection System Operators
- Methane/Landfill Gas Generation System Technicians
- Microbiologists
- Military Recruiters
- Military Workers, Enlisted
- Molecular and Cellular Biologists
- Museum Directors and Curators
- National Park Service Employees
- Naturalists
- Occupational Safety and Health Workers
- Oceanographers
- Park Rangers
- Pet Shop Workers
- Pet Sitters
- Policy Analysts
- Political Scientists
- Press Secretaries and Political Consultants
- Range Managers
- Recreation Workers
- Recycling and Reclamation Workers
- Recycling Coordinators
- Regional and Local Officials
- Renewable Energy Careers
- Renewable Energy Engineers
- Retail Business Owners
- Secret Service Special Agents
- Soil Conservationists and Technicians
- Soil Scientists
- Traffic Engineers
- Translators
- Transportation Planners
- Urban and Regional Planners
- Veterinarians
- Veterinary Technicians
- Wastewater Treatment Plant Operators and Technicians
- Water/Wastewater Engineers
- Zoo and Aquarium Curators and Directors
- Zookeepers
- Zoologists