Robert H. MacArthur
| Robert Helmer MacArthur | |
|---|---|
| Born | April 7, 1930 | 
| Died | November 1, 1972 (aged 42) | 
| Alma mater | Marlboro College (BA) Brown University (AM) Yale University (PhD) | 
| Known for | Island biogeography Optimal foraging theory | 
| Spouse | Elizabeth Bayles Whittemore | 
| Children | 4 | 
| Awards | National Academy of Sciences (1969) | 
| Scientific career | |
| Fields | |
| Institutions | |
| Thesis | Population Ecology of Some Warblers of Northeastern Coniferous Forests (1957) | 
| Doctoral advisor | G. Evelyn Hutchinson | 
| Other academic advisors | David Lack | 
Robert Helmer MacArthur (April 7, 1930 – November 1, 1972) was a Canadian-born American ecologist who made a major impact on many areas of community and population ecology. He is considered to be one of the founders of ecology.