Abstract
The aim of this paper is to provide detailed information concerning the hardware and software needed to design and construct a system for the continuous growth of algae, employing a computer-controlled variable dynamic light regime. The light intensity is controlled by adjusting the angular displacement of slats of a Venetian blind with the help of a stepper motor. The software developed allows the simulation of nature-related light flux regimes occurring in stratified water columns, mixed water columns with optically clear water, and mixed water columns with optically dense water. The light period, circulation time and attenuation coefficient can be chosen freely. Different light regimes with equal total light doses can be generated with the help of mathematical equations developed for this purpose. The software developed is of the Terminate and Stay Resident (TSR) type and operates in the background, thus allowing the computer to be used for other tasks. The system can be used to investigate algal growth and photosynthesis in relation to a dynamic light regime. The characteristics of the light regimes applied during the Vth GAP workshop are presented. The results of these experiments will be described in subsequent papers.
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References
Cosper, E., 1982. Influence of light intensity on diel variations in rates of growth, respiration and organic release of a marine diatom: comparison of diurnally constant and fluctuating light. J. Plankton Res. 4: 705–724.
Falkowski, P. G., 1980. Light-shade adaptation in marine phytoplankton. In: P. G. Falkowski (ed.), Primary productivity in the sea. Plenum Press, New York: 99–119.
Grobbelaar, J. U., B. M. A. Kroon, T. Burger-Wiersma & L. R. Mur, 1992. Influence of medium frequency light/dark cycles of equal duration on the photosynthesis and respiration of Chlorella pyrenoidosa. Hydrobiologia 238: 53–62.
Horlon, P., K. Oxborough, D. Rees & J. D. Scholes, 1988. Regulation of the photochemical efficiency of photosys-tem II; consequences for the light response of field photosynthesis. Plant Physiol. Biochem. 26: 453–460.
Kroon, B. M. A., H. A. M. Ketelaars, H. J. Fallowfield & L. R. Mur, 1989. Modelling microalgal productivity in a high rate algal pond based on wavelength dependent optical properties. J. appl. Phycol. 1: 247–256.
Marra, J., 1978. Effect of short-term variations in light intensity of photosynthesis of a marine phytoplankter: a laboratory simulation study. Mar. Biol. 46: 191–202.
Papageorgiou, G., 1975. Chlorophyll fluorescence: an intrinsic probe of photosynthesis. In: Govindjee (ed.), Bioener-getics of photosynthesis. Academic Press, New York: 320–371.
Post, A. F., Z. Dubinsky & P. G. Falkowski, 1984. Kinetics of light intensity adaptation in a marine planktonic diatom. Mar. Biol. 83: 231–238.
Prézelin, B. B., 1981. Light reactions in photosynthesis. In T. Piatt (ed.), Physiological bases of phytoplankton ecology. Ottawa: Can. Bull. Fish, aquat. Sci. 210: 1–46.
Prézelin, B. B., 1992. Diel periodicity in phytoplankton productivity. Hydrobiologia 238: 1–35.
Prézelin, B. B., H. E. Glover, B. Ver Hoven, D. Steinberg, H. A. Matlick, O. Schofield, N. Nelseon, M. Wyman & L. Campbell, 1989. Blue-green light effects on light-limited rates of photosynthesis: relationship to pigmentation and productivity estimates for Synechococcus populations from the Sargasso Sea. Mar. Ecol. Prog. Ser. 54: 121–136.
Senger, H. & B. Bauer, 1987. The influence of light quality on adaptation and function of the photosynthetic apparatus. Photochem. Photobiol. 45: 939–946.
Van Liere, L. & L. R. Mur, 1978. Light limited cultures of the blue-green alga Oscillatoria agardhii. Mitt. int. Ver. Theor. Angew. Limnol. 21: 158–167.
Walach, M. R., H. H. M. Balyuzi, M. J. Bazin, Y. K. Lee & S. J. Pirt, 1983. Computer control of an algal bioreactor with simulated diurnal concentration. J. Chem. Technol. Biotechnol. 33B: 59–75.
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© 1992 Kluwer Academic Publishers
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Kroon, B.M.A., van Hes, U.M., Mur, L.R. (1992). An algal cyclostat with computer-controlled dynamic light regime. In: Berman, T., Gons, H.J., Mur, L.R. (eds) The Daily Growth Cycle of Phytoplankton. Developments in Hydrobiology, vol 76. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2805-6_4
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DOI: https://doi.org/10.1007/978-94-011-2805-6_4
Publisher Name: Springer, Dordrecht
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