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DIEL OSCILLATIONS IN THE PHOTOSYNTHESIS‐IRRADIANCE RELATIONSHIP OF A PLANKTONIC MARINE DIATOM 1
Author(s) -
Harding Lawrence W.,
Prézelin Barbara B.,
Sweeney Beatrice M.,
Cox James L.
Publication year - 1981
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1981.tb00867.x
Subject(s) - diel vertical migration , irradiance , diatom , biology , photosynthesis , phytoplankton , plankton , amplitude , exponential growth , oceanography , botany , atmospheric sciences , ecology , physics , nutrient , optics , quantum mechanics , geology
The amplitude of diel oscillations in photosynthesis as a function of irradiance varied with the growth phase in a marine phytoplankton species. The common centric diatom (Bacillariophyta), Ditylum brightwellii (West) Grun., showed strong periodicity in the photosynthesis‐irradiance (P‐I) relationship, which damped progressively from early to late exponential and stationary phase. These findings suggest that short‐term temporal characteristics of phytoplankton production depend on factors which affect growth, and that the amplitude is most enhanced at maximal growth rates likely to be encountered in the natural environment.