Premium
Photobiological studies of Skeletonema costatum adapted to spectrally different light regimes
Author(s) -
Nielsen Marianne V.,
Sakshaug Egil
Publication year - 1993
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1993.38.7.1576
Subject(s) - irradiance , quantum yield , absorption (acoustics) , yield (engineering) , chemistry , physics , atmospheric sciences , optics , thermodynamics , fluorescence
Photoadaptational responses to three irradiances for each of five spectral distributions of light were studied in the marine diatom Skeletonema costatum. The C : Chl a ratio increased linearly with increased absorption of light per unit Chl a within the range of irradiances studied. The quantum yield for growth decreased monotonically with increased absorption of light. Our results imply that photoadaptational changes in the C : Chl a ratio and in the maximum quantum yield for growth of S. costatum are simple functions of the number of absorbed photons. Thus, spectrally dependent photoadaptational changes in these parameters can easily be incorporated into mathematical models as simple functions by substituting absorbed light per unit Chl a for ambient irradiance.