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eutrophication

(Encyclopedia)eutrophication yo͞otrōˌfĭkāˈshən [key], aging of a lake by biological enrichment of its water. In a young lake the water is cold and clear, supporting little life. With time, streams draining i...

Ann Arbor

(Encyclopedia)Ann Arbor, city (2020 pop. 123,851), seat of Washtenaw co., S Mich., on the Huron River; inc. 1851. It is a research and educational center, with a large number of government and industria...

Jennings, Herbert Spencer

(Encyclopedia)Jennings, Herbert Spencer, 1868–1947, American zoologist, b. Tonica, Ill., B.S. Univ. of Michigan, 1893, Ph.D. Harvard, 1896. He was professor of zoology at Johns Hopkins (1906–10) and did researc...

Brockway, Zebulon Reed

(Encyclopedia)Brockway, Zebulon Reed, 1827–1920, American penologist, b. Lyme, Conn. As superintendent of the House of Correction in Detroit, he tried to introduce in 1869 the indeterminate sentence for first off...

Tônlé Sap

(Encyclopedia)Tônlé Sap tŏnˈlā säp [key] [great lake], lake, central Cambodia; largest lake of SE Asia. It occupies the depression of the Cambodian plain and is fed by many streams; the Tônlé Sap River, c.7...

Sevan

(Encyclopedia)Sevan syĭvänˈ [key], lake, c.540 sq mi (1,400 sq km), NE Armenia, at an altitude of 6,280 ft (1,914 m); it is 324 ft (99 m) deep. The largest lake of the Caucasus, it is fed by some 30 streams, but...

Titicaca

(Encyclopedia)Titicaca tētēkäˈkä [key], lake, c.3,200 sq mi (8,290 sq km), 110 mi (177 km) long, and c.900 ft (270 m) deep at at its deepest point, in the Andes Mts., on the Bolivia-Peru border; second largest...

Bonneville Salt Flats

(Encyclopedia)Bonneville Salt Flats bŏnˈəvĭl, bŏˈnēvĭl, bŏnˈvĭl [key], desert area in Tooele co., NW Utah, c.14 mi (22.5 km) long and 7 mi (11.2 km) wide. The smooth salt surface of the Flats is ideal fo...

Welland Ship Canal

(Encyclopedia)Welland Ship Canal, 27.6 mi (44.4 km) long, SE Ont., Canada, connecting Lake Ontario with Lake Erie and bypassing Niagara Falls. Built between 1914 and 1932 by Canada to replace a canal opened in 1829...

Hamilton, Alice

(Encyclopedia)Hamilton, Alice, 1869–1970, American toxicologist, physician, and educator, b. New York City, M.D. Univ. of Michigan, 1893; she continued her studies in Germany. A pioneer in industrial diseases and...