A career in freshwater ecology
Cummins was born in Chicago on 28 March 1933. After studying biology at Lawrence University, he earned a fisheries master’s degree and a zoology doctorate in limnology at the University of Michigan. His appointments included Northwestern, Pittsburgh, Michigan State and Oregon State universities.
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Understanding feeding functions
During the 1970s, Cummins developed the functional-feeding-group approach to stream macroinvertebrates, examining how animals acquire and use food. Important publications included his 1973 work on aquatic-insect trophic relations, a 1974 account of stream structure and function, and a review with Mike Klug on the feeding ecology of stream invertebrates.
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Biological adjustments along a river
In 1980, Cummins joined Vannote, Minshall, Sedell and Cushing in publishing the River Continuum Concept. The framework related physical gradients from headwaters to the river mouth to biological communities and resource use, placing feeding functions within a changing river system.
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Identification and ecological information
Cummins and Rich Merritt first edited their North American aquatic-insect manual in 1978. Marty Berg later joined the editorial team; a fifth edition appeared in 2019. Alongside identification keys, the manual included ecological information and references. Cummins died on 8 June 2023, aged 90.
References: [1]