title: Are tidal rhythms ultradian, circadian, or infradian?
authors.affiliation: Department of Zoology, University of Massachusetts, Amherst 01003.
authors.forename: J D
authors.initials: JD
authors.lastname: Palmer
mesh_terms: D000204:Activity Cycles / Q000502:physiology; D000818:Animals; D003386:Brachyura / Q000502:physiology*; D002940:Circadian Rhythm / Q000502:physiology; D008386:Marine Biology; D009043:Motor Activity / Q000502:physiology; D010507:Periodicity