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The Impact of Fish Cages on Water Quality in One Fish Farm in Croatia

Authors: G. Jelic Mrcelic, M. Sliskovic

Abstract:

In Croatia, the majority of cultured marine fish species are reared in net cages. The intensive production of the fish in net cages may generate the considerable amount of bio waste and change water quality especially in enclosed and semi-enclosed coastal areas. The aim of this paper is to assess the potential impact of sea bass (Dicentrarchus labrax L.) cage farm on water quality. The weak relationship between food supply and water quality parameters (nutrient content and phytoplankton biomass) was found, but significant changes in oxygen saturation was observed in the cages during the warmer period of a year especially in the morning (occasionally it dropped below 70 %). Despite of, satisfactory results of water quality parameters, it is necessary to establish comprehensive monitoring process, especially to include quality assessment of fouling communities.

Keywords: Mariculture, monitoring, fish cages, water quality parameters.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1081788

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References:


[1] A. Bergheim, and T. Asgard, "Waste production from aquaculture". In: Aquaculture and Water Resource Management, Baird, D.J., Beveridge, M.C.M., Kelly, L.A. and Muir, J.F. Ed. Blackwell Science, Oxford, 1996, pp. 50-80.
[2] T.C. Telfer, and M.C.M. Beveridge, "Monitoring environmental effects of marine fish aquaculture", www. aquanic.org/species/marinefish/.../ monitoringenvironmentaleffect.pdf, 2010, (28.04.2010)
[3] J. Aure, and A. Stigebrant, "On the influence of topographic factors upon the oxygen consumption rate in still basins of fjords", Estuarine, Coastal and Shelf Sci, 28, 1989, pp. 59-69.
[4] M. Enell, and J. Lof, "Environmental impact of aquaculture - sedimentation and nutrient loading from fish cage culture farming", Vatten, 39, 1989, pp. 369-375.
[5] I. Katavic, and B. Antolic, "On the impact of a sea bass (Dicentrarchus labrax L.) cage farm on water quality and macrobenthic communities", Acta Adriatica 40 (2), 1999, pp. 19-32.
[6] K. Grasshoff, Methods of sea water analyses. Weinhaim: Verlag Chemie, 1976, 307 pp.
[7] O. Holm-Hansen, C. J. Lorenzen, R. W. Holmes and J. D. H. Strickland, "Fluorometric determination of chlorophyll", J. Cons. perm. int. Explor. Mer. 30, 1965, pp. 3-15.
[8] I. Marasovic, and T. Pucher Petkovic, "Eutrophication impact on the species composition in a natural phytoplankton community", Acta Adriatica 32 (2), 1991, pp. 719-729.
[9] G.F. Lee, and R. A. Jones, "Application of the OECD eutrophication modelling approach to estuaries", In: B. J. Nielson and L. E. Cronin Ed. Estuaries and nutrients. New York: Humana Press, 1979, pp. 549-568.
[10] D.W. Schindler, "Studies of eutrophication in lakes and their relevance to the estuaries environment." In: B. J. Nielson and L. E. Cronin Ed. Estuaries and nutrients. New York: Humana Press, 1979, pp. 71-82.
[11] R.J. Gowen, and I. A. Ezzi, "Assessment and prediction of the potential for hypernutrification and eutrophication associated with cage culture of salmonids in Scottish coastal waters", Dunstaffnage Marine Lab., Scotland, 1992, ISBN 9518959-0-7.