Because of the impact of human populations on the environment, virtually no area in the United States (except Alaska) is truly wild. Animal populations require human intervention to help battle against the human encroachment that is damaging or hindering wildlife habitats. Naturalists help wildlife maintain or improve their hold in the world.

The work can be directly involved in maintaining individual populations of animals or plants, overseeing whole ecosystems, or promoting the work of those who are directly involved in the maintenance of the ecosystem. Fish and wildlife officers (or fish and game wardens) work to preserve and restore the animal populations, including migratory birds that may only be part of the environment temporarily. Wildlife managers and range conservationists oversee the combination of plants and animals in their territories.

Fish and wildlife officers and wardens study, assist, and help regulate the populations of fish, hunted animals, and protected animals throughout the United States. They may work directly in the parks and reserves, or they may oversee a region within a particular state, even if there are no parklands there. Fish and game wardens control the hunting and fishing of wild populations to make sure that the populations are not overharvested during a season. They monitor the populations of each species off season as well as make sure the species is thriving but is not overpopulating and running the risk of starvation or territory damage. Most people hear about the fish and game wardens when a population of animals has overgrown its territory and needs either to be culled (selectively hunted) or moved. Usually this occurs with the deer population, but it can also apply to predator animals such as the coyote or fox, or scavenger animals such as the raccoon. Because the practice of culling animal populations arouses controversy, the local press usually gives wide coverage to such situations.

The other common time to hear about wildlife wardens is when poaching is uncovered locally. Poaching can be hunting or fishing an animal out of season or hunting or fishing a protected animal. Although we think of poachers in the African plains hunting lions and elephants, poaching is common in the United States for animals such as mountain lions, brown bears, eagles, and wolves. Game wardens target and arrest poachers; punishment can include prison sentences and steep fines.

Wildlife managers, range managers, and conservationists work to maintain the plant and animal life in a given area. Wildlife managers can work in small local parks or enormous national parks. Range managers work on ranges that have a combination of domestic livestock and wild population. The U.S. government has leased and permitted farmers to graze and raise livestock on federally held ranges, although this program is under increasing attack by environmentalists. Range managers must ensure that both the domestic and wild populations are living side by side successfully. They make sure that the population of predatory wild animals does not increase enough to deplete the livestock and that the livestock does not overgraze the land and eliminate essential food for the wild animals. Range managers and conservationists must test soil and water for nutrients and pollution, count plant and animal populations in every season, and keep in contact with farmers using the land for reports of attacks on livestock or the presence of disease.

Wildlife managers also balance the needs of the humans using or traveling through the land they supervise and the animals that live in or travel through that same land. They keep track of the populations of animals and plants and provide food and water when it is lacking naturally. This may involve airdrops of hay and grain during winter months to deer, moose, or elk populations in remote reaches of a national forest, or digging and filling a water reservoir for animals during a drought.

Naturalists in all these positions often have administrative duties such as supervising staff members and volunteers, raising funds (particularly for independent nonprofit organizations), writing grant applications, taking and keeping records and statistics, and maintaining public relations. They may write articles for local or national publications to inform and educate the public about their location or a specific project. They may be interviewed by journalists for reports concerning their site or their work.

Nature walks are often given to groups as a way of educating people about the land and the work that goes into revitalizing and maintaining it. Tourists, schoolchildren, amateur conservationists and naturalists, social clubs, and retirees commonly attend these walks. On a nature walk, the naturalist may point out specific plants and animals, identify rocks, and discuss soil composition or the natural history of the area (including special environmental strengths and problems). The naturalist may even discuss the indigenous people of the area, especially in terms of how they adapted to the unique aspects of their particular environment. Because such a variety of topics may be brought up, the naturalist must be an environmental generalist, familiar with such subjects as biology, botany, geology, geography, meteorology, anthropology, and history.

Demonstrations, exhibits, and classes are ways that the naturalist can educate the public about the environment. For example, to help children understand oil spills, the naturalist may set up a simple demonstration showing that oil and water do not mix. Sometimes the natural setting already provides an exhibit for the naturalist. Dead fish, birds, and other animals found in a park may help demonstrate the natural life cycle and the process of decomposition. Instruction may also be given on outdoor activities, such as hiking and camping.

For some naturalists, preparing educational materials is a large part of their job. Brochures, fact sheets, pamphlets, and newsletters may be written for people visiting the park or nature center. Materials might also be sent to area residents in an effort to gain public support.

One aspect of protecting any natural area involves communicating facts and debunking myths about how to respect the area and the flora and fauna that inhabit it. Another aspect involves tending managed areas to promote a diversity of plants and animals. This may mean introducing trails and footpaths that provide easy yet noninvasive access for the public; it may mean cordoning off an area to prevent foot traffic from ruining a patch of rare moss; or it may mean instigating a letter-writing campaign to drum up support for legislation to protect a specific area, plant, or animal. It may be easy to get support for protecting the snowshoe rabbit; it is harder to make the public understand the need to preserve and maintain a batcave.

Some naturalists, such as directors of nature centers or conservation organizations, have massive administrative responsibilities. They might recruit volunteers and supervise staff, organize long- and short-term program goals, and handle record-keeping and the budget. To raise money, naturalists may need to speak publicly on a regular basis, write grant proposals, and organize and attend scheduled fund-raising activities and community meetings. Naturalists also try to increase public awareness and support by writing press releases and organizing public workshops, conferences, seminars, meetings, and hearings. In general, naturalists must be available as resources for educating and advising the community.

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