Central Question: How can we protect species in an increasingly human-dominated world?

Answer the following questions for each chapter section and then answer the Central Question.

3.1–3.5 Science

  • What is the significance of genetic diversity in populations?

  • How do distribution and abundance vary among species?

  • How do populations grow and how are they regulated?

  • What are the typical life histories of species

  • How does species interaction influence communities?

3.6–3.9 Issues

  • How have humans affected extinction rates?

  • What are the three main factors that threaten species populations?

  • How have predator and pest control impacted vulnerable species?

3.10–3.14 Solutions

  • How do laws and international treaties protect endangered species?

  • How was the peregrine falcon saved from probable extinction?

  • What contributions has population ecology made to restoring wolf populations?

  • What approaches have been used to reduce conflict resulting from wolf recovery?

  • What economic benefits do wild populations offer?

Answer the Central Question:

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Endangered Species and You

Protecting endangered species involves work across many areas, including science, politics, law, and economics. It is impossible for any individual to singlehandedly save and protect an endangered species. However, the solutions to endangered species issues can be addressed in our daily lives in many significant ways that collectively make a very big difference.

Get involved with endangered species and wildlife conservation.

There are many opportunities to work as a volunteer or intern in endangered species and wildlife conservation programs that will give valuable experience in preparation for future studies or a career in a conservation-related field. For example, the U.S. Fish and Wildlife Service sponsors large numbers of volunteers to work on endangered species management, habitat restoration, and many other conservation-related projects. Most state fish and game agencies or departments of natural resources support and value volunteers and interns who work in similar areas. Most modern zoos are also focused on endangered species conservation and the majority have volunteer programs. A summary of government-related volunteer programs across the United States may be found at www.volunteer.gov.

Support predator-friendly products and organizations.

Livestock producers around the United States are becoming certified as producers of “predator-friendly” products, including wool, lamb, and beef. These are ranchers and farmers who use nonlethal means of reducing losses to predators, including shepherds, protective fencing, and livestock guard dogs. If you are a consumer of such products, buying from these certified producers will help sustain their efforts. You may also consider becoming active in organizations, such as Defenders of Wildlife, that promote the coexistence of livestock and predators.

Help control invasive species.

The massive problem of invasive species has created virtually unlimited opportunities for involvement in control and prevention programs. You can begin at home. If you are a gardener, consider growing native plant species to help reduce the flow of invasive species into the environment. If you keep exotic pets, do not release them into the wild. Pets released into the wild generally die in a short time. Also, wildlife refuges, nature centers, national or state forests, and others often enlist volunteers to help with invasive species control and habitat improvement.

Do not encourage wildlife trafficking.

Taking care with your buying habits can reduce the environmental impact of wildlife trafficking. The pet trade is a major source of damage to habitats, particularly coral reefs, and wild populations. Millions of birds, primates, amphibians, and reptiles are captured and sold every year. If you keep pets, you can reduce these impacts by purchasing only captive-reared birds, aquarium fish, and reptiles and by strictly avoiding any purchase of wild-caught animals. To reduce the destruction of reef habitats around the world, do not buy coral or live reef rocks. Avoid all products made of ivory or turtle shells.