Abstract
The responses of Gracilaria corticata and Gelidiopsis gracilis (agarophytes) to different concentrations of sea water, pH range and lights of different colours have been studied to understand the ecological amplitudes. Both algae had a very narrow range of salinity tolerance from 29.0 to 33.1‰. With respect to pH also, they could thrive only under pH values from 7.0 to 8.0. Growth of these algae was retarded under all coloured lights. However, under yellow light growth was nearer to that of controls.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Blinks, L. R. 1951. Physiology and Biochemistry of algae In: Manual of Phycology (Ed. Smith, G. M.) Chronica Botanica, Waltham, Massachusetts. 263–291.
Cook, J. R. 1965. Influence of light on acetate utilisation in green Euglena. Pl. Cell Physiol. Tokyo. 6: 301–307.
Feldmann, J. 1951. Ecology of marine algae In: Manual of Phycology (Ed. Smith, G. M.) Chronica Botanica, Waltham, Massachusetts. 313–334.
Fritsch, F. E. 1965. The structure and reproduction of the algae. Vol II. Cambridge University Press, London, New York.
Gessner, F. & Schramm, W. 1971. Salinity: Plants In: Marine Ecology (Ed. Kinne, O.), Vol. I, Part 2, Wiley and sons, 705–820 pp.
Hartog, C. Den 1972. The effect of the salinity tolerance of algae on their distribution as examplified by Bangia. Proc. VII Intern. Seaweed Sym. (Ed. Kazutosi Nizisawa) University of Tokyo Press.
Kjeldsen, C. K. & Phinney, H. K. 1972. Effects of pH variations in salinity and temperature on estuarine macro algae. Proc. VII Intern Seaweed Sym (Ed. Kazutosi Nizisawa) University of Tokyo Press.
Kling, R. 1975. Action of metals and various coloured lights on Gracilaria verrucosa (Hudson) Papenfuss (Gigartinales, Gracilariaceae); Bull. Soc. Phycol. France. 19: 49–66.
Kylin, H. 1927. On the effect of hydrogen ion concentration on certain marine algae. Bot. Not. 243–254.
Martin, D. F. 1968. Marine chemistry. Vol. I. Marcel Decker Inc. New York.
Nygren, S. 1975. Influence of salinity on the growth and distribution of some phaeophyceae on the Swedish west coast. Bot. Mar. 18: 143–147.
Oltmanns, F. 1923. Morphology und Biology der Algen. 2nd Edn. Vol. III. Fisher, Jena (Germany).
Patel, R. J. 1967. Effects of different temperatures and various light on growth of cladophora flexuosa Harv. Proc. Sem. Sea, salt & Plants., Bhavnagar. (Ed. Krishnamurthy, V.), 240–255.
Perkins, E. J. 1974. The biology of estuaries and coastal waters. Academic Press, London-New York.
Provasoli, L. 1963. Growing marine sea weeds. Proc. IV Intern. seaweed Sym. Pergamon Press, New York, 9–17.
Rao, P. S. 1968. Systematics, ecology and life history of Gelidiales with special reference to Gelidiella acerosa. Ph. D. thesis submitted to Banarus Hindu University, India.
Rao, P. S. & Mehta, V. B. 1973. Physiological ecology of Gelidiella acerosa (Forsskal) Feldmann et Hamel. J. Phycol. 9: 333–335.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Singh, A., Ramakrishna, T. & Murthy, M.S. Some ecological observations on two agarophytes from India. Hydrobiologia 75, 185–188 (1980). https://doi.org/10.1007/BF00007432
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF00007432