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Joseph P. Grinnell (February 27, 1877 – May 29, 1939) was an American field biologist and zoologist. He made extensive studies of the fauna of California, and is credited with introducing a method of recording precise field observations known as the Grinnell System . [ 1 ]
Grinnell undertook a biological survey project in 1908, which lasted 30 years and covered more than 700 locations in the state of California. The resulting database has more than 20,000 specimens, 13,000 pages of field notes, and 2,000 photographs. The Grinnell Survey database is one of the most comprehensive collections of its kind in the ...
A page of Robert H. Gibbs Jr.'s field notebook. Fieldnotes refer to qualitative notes recorded by scientists or researchers in the course of field research, during or after their observation of a specific organism or phenomenon they are studying. The notes are intended to be read as evidence that gives meaning and aids in the understanding of ...
Paramecium aurelia and Paramecium caudatum grow well individually, but when they compete for the same resources, P. aurelia outcompetes P. caudatum.. Based on field observations, Joseph Grinnell formulated the principle of competitive exclusion in 1904: "Two species of approximately the same food habits are not likely to remain long evenly balanced in numbers in the same region.
Naturalist George Bird Grinnell was editor for 35 years, and contributors included Theodore Roosevelt. [1] Another notable contributor was Theodore Gordon, long considered "the father of American dry fly fishing," who began writing for the magazine in 1903. [3] The magazine merged with Field and Stream in July, 1930. [1]
Grinnell was born on September 20, 1849, in Brooklyn, New York, the son of George Blake and Helen Lansing Grinnell.The family moved when he was seven to Audubon Park, the section of Washington Heights in Manhattan which was developed from the estate after noted ornithologist John James Audubon's death in 1851. [2]
Grinnell College students staged a walkout to express solidarity with Palestine and demand that the college stop financial support of Israel.
They contained botanical and entomological papers and notes. Since about 1955, it has published a newsletter (10 issues per year), [ 22 ] most recently called NetWork . In 1999, it published a book by Robert Lee Allen, Stalking the wild arthropod: The Lorquin Entomological Society's guide to photographing arthropods .