From controversy to consensus: the indirect interference functional response

摘要

Theoretical debate between advocates of the prey-dependent and ratio-dependent functional responses has given way to an understanding that most functional responses exhibit some form of predator dependence (Abrams & Ginzburg 2000). The intermediate models of Beddington-DeAngelis (BD; DeAnge-lis et al. 1975) and Hassell-Varley (HvH; Hassell-Varley 1969) capture some of the properties of ratio dependence without the extreme assumption of total prey sharing. When and how to use these intermediates remains a mystery; this uncertainty prevents prediction of: (1) the equilibrial response of trophic systems to enrichment; (2) the length of trophic chains; and (3) the stability of trophic systems.