Why Study Continental Aquatic Systems Chapter 1 Why Study Continental Aquatic Systems Dodds & Whiles ©2010 Elsevier, Inc.

FIGURE 1.1 Crater Lake, Oregon. ©2010 Elsevier, Inc.

G. Evelyn Hutchinson. (Courtesy of the Yale Image Library). FIGURE 1.2 G. Evelyn Hutchinson. (Courtesy of the Yale Image Library). ©2010 Elsevier, Inc.

thousands of km3 per year). (Data from Berner and Berner, 1987). FIGURE 1.3 Fluxes (movements among different compartments) in the global hydrologic budget (in thousands of km3 per year). (Data from Berner and Berner, 1987). ©2010 Elsevier, Inc.

courtesy of the United States Geological Survey). FIGURE 1.4 Estimated uses of water (A) and total population and per capita water use (B) in the United States from 1950 to 2000. Note that industrial and irrigation uses of water are dominant. Offstream withdrawals used in these estimates do not include hydroelectric uses. (Data courtesy of the United States Geological Survey). ©2010 Elsevier, Inc.

States Geological Survey). FIGURE 1.5 Amounts of surface and groundwater used in the United States from 1950 to 2000. Estimates include only withdrawals and not hydroelectric uses. (Data courtesy of the United States Geological Survey). ©2010 Elsevier, Inc.

FIGURE 1.6 A clear cut across a small stream. (Courtesy of the United States Forest Service). ©2010 Elsevier, Inc.