Abstract
Zooplankton variability in a lagoon of the Po Delta, the Sacca di Goro, was studied in relation to changes in its hydrodynamic and hydrological features. From 1987 to 1992 the lagoon was affected each summer by severe anoxia due to the decomposition of dense and widespread beds of Ulva rigida. In August 1992 a canal was opened through the sand bank closing off the lagoon from the sea in order to improve the water circulation. This hydraulic intervention led to significant environmental changes in the lagoon: during the two subsequent years the summer dystrophic crises were brief and less severe, due to a sharp decrease in the Ulva cover. At the same time a clear increase in phytoplankton biomass values was observed. Following the opening of the channel, the most remarkable change in Zooplankton was a significant density increase of calanoids, particularly of Acartia tonsa.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Ambrogi, R., I. Ferrari & S. Geraci, 1989. Biotic exchange between river, lagoon and sea: The case of Zooplankton in the Po Delta. Scient. Mar. 53: 601–608.
A.P.H.A., A.W.W.A., W.P.C.F., 1975. Standard methods for the examination of water and wastewater. 14th edition, A.P.H.A., Washington, 1114 pp.
Bakker, C., 1994. Zooplankton species composition in the Oosterschelde (SW Netherland) before, during and after the construction of a strorm-surge barrier. Hydrobiologia 282/283: 117–126.
Bakker, C. & P. van Rijswijk, 1994. Zooplankton biomass in the Oosterschelde (SW Netherland) before, during and after the construction of a strorm-surge barrier. Hydrobiologia 282/283: 127–143.
Brylinski, J. M., 1981. Report on the presence of Acartia tonsa Dana (Copepoda) in the harbour of Dunkirk (France) and its geographical distribution in Europe. J. Plankton Res. 3: 255–260.
Carrada, G. C., V. U. Ceccherelli & I. Ferrari, 1987. Les lagunes italiennes. Bull. Ecol. 18: 149–158.
Castel, J., 1993. Long-term distribution of Zooplankton in the Gironde estuary and its relation with river flow and suspended matter. Cah. Biol. mar. 34: 145–163.
Ceccherelli, V. U., I. Ferrari & P. Viaroli, 1994. Ecological research on the animal communities of the Po River Delta lagoons. Boll. Zool. 61:425–436.
Farabegoli, A., I. Ferrari, C. Manzoni & A. Pugnetti, 1989. Prima segnalazione nel Mare Adriatico del copepode calanoide Acartia tonsa DANA. Nova Thalassia 10: 207–208.
Ferrari, I. & A. R. Chieregato, 1981. Feeding habits of juvenile stages of Sparus auratus L., Dicentrarchus labrax L. and Mugilidae in a brackish errçbayment of the Po River Delta. Aquaculture 25: 243–257.
Ferrari, I., M. T. Cantarelli, M. G. Mazzocchi & L. Tosi, 1985. Analysis of a 24-hour cycle of Zooplankton sampling in a lagoon of the Po River Delta. J. Plankton Res. 7: 849–865.
Ferrari, I., V. U. Ceccherelli, M. Naldi & P. Viaroli, 1993. Planktonic and benthic communities in a shallow-water dystrophic lagoon. Verh. int. Ver. Limnol. 25: 1043–1047.
Gaudy, R. & M. D. Viñas, 1985. Première signalisation en Méditerranée du Copépode pélagique Acartia tonsa. Rapp. Comm. int. Mer Médit. 29: 227–229.
Hill, M. O., 1979. DECORANA: a FORTRAN program for defended correspondence analysis and reciprocal averaging. Section of Ecology and Systematics, Cornell University, Ithaca, New York.
Lam Hoai, T. & M. Amanieu, 1989. Spatial structure and seasonal evolution of surface Zooplankton in two mediterranean lagoon ecosystems. Oceanol. Acta 12: 65–77.
Laprise, R. & J. J. Dodson, 1994. Environmental variability as a factor controlling spatial patterns in distribution and species diversity of Zooplankton in the St. Lawrence Estuary. Mar. Ecol. Prog. Ser. 107:67–81.
Menendez, M. & F. A. Comin, 1986. Variaciòn estacional del zooplancton en las lagunas del Delta del Ebro (NE España). Oecol. aquat. 8: 47–60.
Soetaert, K. & P. van Rijswijk, 1993. Spatial and temporal patterns of the Zooplankton in the Westerschelde estuary. Mar. Ecol. Prog. Ser. 97: 47–59.
Ter Braak, C. J. F., 1986. Canonical Correspondence Analysis: anew eigenvector technique for multivariate direct gradient analysis. Ecology 67: 1167–1179.
Ter Braak, C. J. F., 1988. CANOCO — a FORTRAN program for canonical community ordination by (partial) (detrended) (canonical) correspondence analysis, principal component analysis and redundance analysis (version 2.1). Agricultural Mat. Group, Ministry of Agriculture and Fisheries, Wageningen, 95 pp.
Viaroli, P., A. Pugnetti & I. Ferrari, 1992. Ulva rigida growth and decomposition processes and related effects on nitrogen and phosphorus cycles in a coastal lagoon (Sacca di Goro, Po River Delta). In G. Colombo, I. Ferrari, V. U. Ceccherelli & R. Rossi (eds), Marine Eutrophication and Population Dynamics, Olsen & Olsen, Fredensborg: 77–84.
Viaroli, P., M. Naldi, R. R. Christian & I. Fumagalli, 1993a. The role of macroalgae and detritus in the nutrient cycles in a shallow-water dystrophic lagoon. Verh. int. Ver. Limnol. 25: 1048–1051.
Viaroli, P., M. Bartoli, C. Bondavalli, M. Naldi & I. Ferrari, 1993b. Macroalgae growth and decomposition and nutrient cycling in the Sacca di Goro (Po river delta). C.E.C.-Environmental Research Programme, C.L.E.AN Progress report: 281–307.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1996 Kluwer Academic Publishers
About this chapter
Cite this chapter
Sei, S., Rossetti, G., Villa, F., Ferrari, I. (1996). Zooplankton variability related to environmental changes in a eutrophic coastal lagoon in the Po Delta. In: Caumette, P., Castel, J., Herbert, R. (eds) Coastal Lagoon Eutrophication and ANaerobic Processes (C.L.E.AN.). Developments in Hydrobiology, vol 117. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1744-6_4
Download citation
DOI: https://doi.org/10.1007/978-94-009-1744-6_4
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7279-3
Online ISBN: 978-94-009-1744-6
eBook Packages: Springer Book Archive