Río Sonora ( Sonora River ) is a 402-kilometer-long river of Mexico . It lies on the Pacific slope of the Mexican state of Sonora and it runs into the Gulf of California .
6-506: The Sonora River watershed covers 10,040 square miles (26,000 km) of public land. Slopes range from steep orientations in the upper part of the watershed to more gradual topographies in the valleys. The Sonora River watershed is subdivided into six smaller watersheds. Biotic communities found within the watershed in order of importance by the area covered are the Sinaloan thornscrub, the plains of Sonora subdivision, semidesert grasslands,
12-625: A river in Mexico is a stub . You can help Misplaced Pages by expanding it . Edgar Alexander Mearns Edgar Alexander Mearns (September 11, 1856 – November 1, 1916) was an American surgeon , ornithologist and field naturalist . He was a founder of the American Ornithologists' Union . Mearns was born in Highland Falls, New York , to Alexander and Nancy Reliance Mearns (née Clarswell). His grandfather Alexander
18-558: The Madrean evergreen woodland, and the central gulf coast subdivision. Average annual precipitation is 375 millimetres (14.8 in) which occurs in two seasons, late summer-early fall and winter-early spring. Physician naturalist Edgar Alexander Mearns ' 1907 report of beaver ( Castor canadensis ) on the Sonora River may be the southernmost extent of the range of this North American aquatic mammal. This article related to
24-834: The fauna and trees of the boundary between Mexico and the United States in his 1907 Mammals of the Mexican Boundary of the United States . In 1909 he retired from the army with a rank of a lieutenant colonel . Later that year Theodore Roosevelt invited Mearns to accompany the Smithsonian-Roosevelt African Expedition as naturalist. From 1911 to 1912 he was a member of the Childs Frick expedition in Africa to collect and prepare specimens of birds that Frick later presented to
30-572: The military as a surgeon. From 1899 to 1903, he was a medical officer in several army institutions. From 1903 to 1904 and from 1905 to 1907, he traveled to the Philippines; he had to interrupt his journey in 1904 because he came down with a parasitic disease. In 1905 a trip led him to Guam . As major and surgeon in the army, Mearns was appointed medical officer to the International Boundary Commission; he reported on
36-583: Was of Scottish origin and moved to Highland Falls in 1815. Edgar Mearns was educated at the Donald Highland Institute (Highland Falls). He attended the Columbia College of Physicians and Surgeons , graduating in 1881. In 1881, he married Ella Wittich of Circleville, Ohio . The couple had one son and one daughter. Their son was born in 1886 and died in 1912. Mearns became a doctor in the U.S. Army. From 1882 to 1899 he served
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