John Ernst Weaver ( 5 May 1884 – 8 June 1966) was an American

botanist Botany, also called plant science, is the branch of natural science and biology studying plants, especially Plant anatomy, their anatomy, Plant taxonomy, taxonomy, and Plant ecology, ecology. A botanist or plant scientist is a scientist who s ...

prairie Prairies are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the ...

ecologist, and university professor.

Biography

Weaver was born in

Villisca, Iowa Villisca is a city in East Township, Montgomery County, Iowa, United States. The population was 1,132 at the time of the 2020 census. It is most notable for the unsolved axe murder that took place in the town during the summer of 1912. Hist ...

. He obtained a PhD in Biology and Botany at the

University of Minnesota The University of Minnesota Twin Cities (historically known as University of Minnesota) is a public university, public Land-grant university, land-grant research university in the Minneapolis–Saint Paul, Twin Cities of Minneapolis and Saint ...

, 1916. He was "Instructor of Botany" at

Washington State College Washington State University (WSU, or colloquially Wazzu) is a public land-grant research university in Pullman, Washington, United States. Founded in 1890, WSU is also one of the oldest land-grant universities in the American West. With an un ...

from 1912 to 1913. In 1915 he became "Assistant professor of Botany" at the

University of Nebraska A university () is an educational institution, institution of tertiary education and research which awards academic degrees in several Discipline (academia), academic disciplines. ''University'' is derived from the Latin phrase , which roughly ...

where he was a plant ecology professor from 1917 until his retirement in 1952. Weaver published many works regarding vegetation and ecology of prairies. According to his biography in ''Nebraska Authors'': In 1929 Weaver and

Henry Chandler Cowles Henry Chandler Cowles (February 27, 1869 – September 12, 1939) was an American botanist and ecological pioneer. A professor at the University of Chicago, he studied ecological succession in the Indiana Dunes of Northwest Indiana.Smith, S. & ...

published the first American ecology textbook. According to his obituary at the

Ecological Society of America The Ecological Society of America (ESA) is a professional organization of ecological scientists. Based in the United States and founded in 1915, ESA publications include peer-reviewed journals, newsletters, fact sheets, and teaching resources. I ...

, which he served as both vice president and president (1924–1925 and 1930 respectively): He was also a member of the

Botanical Society of America The Botanical Society of America (BSA) represents professional and amateur botanists, researchers, educators and students in over 80 countries of the world. It functions as a United States nonprofit 501(c)(3) membership society. History The soc ...

, and the Nebraska Academy of Sciences.

Books

*Study of ''Amygdalus persica''. Unpublished thesis (1910) *A Study of the vegetation of Southeastern Washington and Adjacent Idaho. Lincoln, Nebraska. (1917

*The ecological relations of roots. - Carnegie institution of Washington, Publ. 286. (1919

*Root development in the grassland formation, a correlation of the root systems of native vegetation and crop plants. Washington, Carnegie Institution of Washington (1920

*Development and activities of roots of crop plants; a study in crop ecology. Carnegie institution of Washington with franc C Jean and John W. Crist (1922) *Experimental vegetation; the relation of climaxes to climates, by Frederic Edward Clements (1874-1945) and J.E. Weaver. Washington, Carnegie Institution of Washington, 1924. *Root development of field crops, by J.E. Weaver. New York

tc. TC, T.C., Tc, Tc, tc, tC, or .tc may refer to: Arts and entertainment Film and television * Theodore "T.C." Calvin, a character on the TV series '' Magnum, P.I.'' and its reboot * Tom Caron, American television host for New England Sports Netw ...

McGraw-Hill book company, inc., 1926

*Root Development of Vegetable Crops. with William E. Bruner. McGRAW-HILL BOOK COMPANY, Inc. (1927

*Relative efficiency of roots and tops of plants in protecting the soil from erosion. by Joseph Kramer (1890-?) and J.E. Weaver. incoln Neb. : Printed by authority of the state of Nebraska, (1936) *Plant Ecology. with F.E. Clements. New York, London, McGraw-Hill Book Company, inc. (1938) *North American Prairie. Lincoln, Neb., Johnsen Pub. CO (1954) *Grass country of the Great Plains: Their Nature and Use. Lincoln, Neb., Johnsen Pub. CO with F.W. Albertson (1956) *Native vegetation of Nebraska. Lincoln, University OF Nebraska press (1965) *Prairie plants and their environment; a fifty-year study in the Midwest. Lincoln, University of Nebraska Press (1968)

Writings about drought

*Effects of Drought, Dust, and Intensity of Grazing on Cover and Yield of Short-Grass Pastures, F. W. Albertson and J.E. Weaver. Published in ''Ecological Monographs'', Vol. 14, No. 1 (Jan., 1944), pp. 1–29. *Effects of the Great Drought on the Prairies of Iowa, Nebraska, and Kansas, with F. W. Albertson. Published in ''Ecology'', Vol. 17, No. 4 (Oct., 1936), pp. 567–639.

References

External links

Papers of John E. Weaver (1884-1956)
Works available in full-text online at University of Nebraska-Lincoln.
Article about ''The Ecological Relations of Roots''
{{DEFAULTSORT:Weaver, John Ernest 1884 births 1966 deaths 20th-century American botanists American ecologists University of Minnesota alumni University of Nebraska–Lincoln faculty Washington State University faculty