Geoscience Reference
In-Depth Information
Fig. 1.3. Land jurisdiction in Wyoming and adjacent parts of
neighboring states. Federal and private lands make up 48 and
43 percent of Wyoming, respectively. Most federal land is ad-
ministered by three agencies: the U.S. Forest Service (national
forests and national grasslands), the national Park Service
(parks, monuments, and recreation areas), and the Bureau of
Land Management. Approximately 5 percent of the state has
been designated by congress as Wilderness, all on federal
land. State and tribal lands cover 6 and 3 percent of the state,
respectively. State-owned lands are widely distributed in
small tracts and are not separated from private land on this
map. county lines are shown. cartography by Ken Driese.
both food sources, and detritivores and decomposers that
derive their energy and nutrients from dead plants and
animals. As the populations of a community or ecosys-
tem change, other attributes change as well (for example,
rates of streamflow, photosynthesis, herbivory, and the
cycling of nutrients). of interest to many ecologists is
how the abundance of different species and their influ-
ences are affected by varying environmental conditions,
and how they change with time following disturbances. 3
Some ecologists specialize in the study of plants, whereas
others concentrate on bacteria, fungi, insects, birds,
mammals, or other organisms.
 
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