abstract: Data of biological chronometry, which depend on the combination of endogeneous rhythms of different period, are discussed in the following order: combination between circadian and circatidal rhythms, combination between circadian and endogenous semilunar (=circasyzygic) rhythms, and combination between circadian and circannual rhythms. With regard to principles of combination 5 types are distinguished.
authors.affiliation: Lehrstuhl für Physiologische Ökologie, Zoologisches Institut der Universität Köln, Köln, Deutschland.
authors.forename: Dietrich
authors.initials: D
authors.lastname: Neumann