In ecology, r/K selection theory relates to the selection of combinations of traits that trade off the quantity and quality of offspring to promote success in particular environments. The terminology of r/K-selection was coined by the ecologists Robert MacArthur and E. O. WilsonPianka, E.R. (1970). On r and K selection. American Naturalist 104, 592-597. based on their work on island biogeography. Overview In r/K selection theory, selective pressures are hypothesised to drive evolution in one of… (More on R-selection)