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Chapter 5 Saturation Pulse Analysis
42
REG2
The function REG2 is monotonically nondecreasing and, hence,
does not allow for photoinhibition:
) tαnh(
m
m
ETR
PPFD
ETR ETR
⋅
⋅ =
α
Here, the cardinal points, α and ETR
max
, are estimated by the fit-
ting procedure. With the latter two parameters, the I
K
is calculat-
ed as described for REG1.
5.5 Some Light Curve References
Long-term Light Curves
Jassby AD, Platt T (1976) Mathematical formulation of the rela-
tionship between photosynthesis and light for phytoplankton.
Limnol Oceanogr 21: 540-547
Platt T, Gallegos CL, Harrison WG (1980) Photoinhibition of pho-
tosynthesis in natural assemblages of marine phytoplankton. J
Mar Res 38: 687-701
Rapid Light Curves
Fouqueray M, Mouget J-L, Morant-Manceau A, Tremblin AG
(2007) Dynamics of short-term acclimation to UV radiation in ma-
rine diatoms. J Photochem Photobiol B: Biology 89: 1–8
Perkins RG, Mouget J-L, Lefebvre S, Lavaud J (2006) Light re-
sponse curve methodology and possible implications in the ap-
plication of chlorophyll fluorescence to benthic diatoms. Marine
Biol 149: 703-712
Ralph PJ, Gademann R (2005) Rapid light curves: A powerful
tool to assess photosynthetic activity. Aquat Bot 82: 222-237