Scientia Marina, Vol 77, No 1 (2013)

Looking for patterns in the phytoplankton community of the Mediterranean microtidal Venice Lagoon: evidence from ten years of observations

Fabrizio Bernardi Aubry
National Research Council (CNR), Institute of Marine Science (ISMAR) , Italy

Francesco Acri
National Research Council (CNR), Institute of Marine Science (ISMAR) , Italy

Franco Bianchi
National Research Council (CNR), Institute of Marine Science (ISMAR) , Italy

Alessandra Pugnetti
National Research Council (CNR), Institute of Marine Science (ISMAR) , Italy


By analysing a ten-year series (1998-2007) of data on hydrochemical properties, phytoplankton abundance and species composition in the Venice Lagoon, we identified i) the average annual phytoplankton biomass cycle, mainly unimodal and fairly well tuned with the fluctuations in temperature and irradiance and (ii) the seasonal succession of the most important species, allowing us to construct a “phytoplankton calendar”. Phytoplankton biomass was significantly lower in the second half of the ten-year period (2003-2007) than in the first half (1998-2002).


phytoplankton community; multiannual variation; seasonal pattern; spatial variability; Venice Lagoon; Adriatic Sea

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Acri F., Bernardi Aubry F., Bianchi F., Boldrin A, Comaschi A., Rabitti S., Socal. G. 2004. Changes in nutrients and plankton communities in the lagoon of Venice from 1970s until today. J. Mar. Sys. 51: 321-329.

Alberighi L., Bianchi F., Cioce F. Socal G. 1992. Osservazioni durante un bloom di Skeletonema costatum in prossimità della centrale termoelettrica ENEL di Fusina Porto-Marghera (Venezia). Oebalia 17(Suppl.): 321-322.

ARPAV, Agenzia Regionale per la Prevenzione dell'Ambiente del Veneto. 2009. Bacino scolante nella laguna di Venezia. Rapporto sullo stato ambientale dei corpi idrici. Anni 2005-2007.

Bandelj V., Socal G., Park Y., Lek S., Coppola J., Camatti E., Capuzzo E., Milani L., Solidoro C. 2008. Analysis of multitrophic plankton assemblages in the Lagoon of Venice. Mar. Ecol. Progr. Ser. 368: 23-40.

Bastianini M., Acri F., Bernardi Aubry F., Casotti R., D'Ortenzio F., Miralto A., Socal G. 2004. Environmental Factors Triggering the Late-Winter Diatom Bloom in the North Adriatic Sea. Rapp. Comm. Int. Expl. Sci. Mer Méditerranée 37: 487.

Bernardi Aubry F., Acri F. 2004. Phytoplankton seasonality and exchange at the inlets of the Lagoon of Venice (July 2001-June 2002). J. Mar. Syst. 51: 65-76.

Bernardi Aubry F., Berton A., Bastianini M., Socal G., Acri F. 2004. Phytoplankton succession in a coastal area of the NW Adriatic over a 10-years sampling period (1990-1999). Continent. Shelf Res., 24/1: 97-115.

Bernardi Aubry F., Acri F., Bastianini M., Bianchi F., Cassin D., Pugnetti A., Socal G. 2006. Seasonal and inter annual variations of phytoplankton in the gulf of Venice (Northern Adriatic Sea). Chem. Ecol. 22: 71-91.

Bernardi Aubry F., Cossarini G., Acri F., Bastianini M., Bianchi F., Camatti E., De Lazzari A., Pugnetti A., Solidoro C., Socal G. 2012. Plankton communities in the northern Adriatic Sea: Patterns and changes over the last 30 years. Estuar. Coast. Shelf Sci. 115: 125-137.

Bianchi F., Acri F., Alberighi L., Bastianini M., Boldrin A., Cavalloni B., Cioce F., Comaschi A., Rabitti S., Socal G., Turchetto M.M. 1999. Biological variability in the Venice Lagoon. In: Lasserre P., Marzollo A. (eds), The Venice Lagoon Ecosystem. Inputs and Interactions between Land and Sea. UNESCO and Parthenon Publishing Press, 97-126.

Bianchi F., Acri F., Bernardi Aubry F., Berton A., Boldrin A., Camatti E., Cassin D., Comaschi A. 2003. Can plankton communities be considered as bio-indicators of water quality in the lagoon of Venice? Mar. Poll. Bull. 46: 964-971.

Bianchi F., Socal G., Alberighi L., Cioce F. 1996. Cicli nictemerali dell'ossigeno disciolto nel bacino centrale della laguna di Venezia. Biol. Mar. Medit. 3 (1): 628-630.

Boyer J.N., Fourqurean J.W., Ronald D.J. 1997. Spatial characterization of water quality in Florida Bay by multivariate analyses: zones of similar influences. Estuaries, 4: 743–758.

Boyer J.N., Fourqurean J.W., Ronald D.J. 1999. Seasonal and longterm trends in the water quality of Florida Bay (1989-1997). Estuaries 22: 417-430.

Caroppo C., 2000. The contribution of picophytoplankton to community structure in a Mediterranean brackish environment. J. Plankton Res. 22: 381-397.

Carr M. 1996. PRIMER User Manual. Plymouth Marine Laboratory, 40 pp.

Cassie R.M. 1962. Frequency distribution model in the ecology of plankton and other organisms. J. Anim. Ecol. 31: 65-92.

Cebrian C.,Valiela I. 1999. Seasonal patterns in phytoplankton biomass in coastal ecosystems. J. Plankton Res. 21 (3): 429-444.

Clarke K.R., Warwick R.M. 1994. Change in marine communities: an approach to statistical analysis and interpretation. Plymouth Marine Laboratory, Plymouth, 144 pp.

Cloern J.E., Jassby A.D. 2008. Complex seasonal patterns of primary producers at the land-sea interface. Ecol. Lett. 11: 1-10. PMid:18793308

Cloern J.E., Jassby A.D. 2010. Patterns and scales of phytoplankton variability in estuarine-coastal ecosystems. Estuar. Coast. 33: 230-241.

Collavini F., Bettiol C., Zaggia L., Zonta R. 2005. Pollutant loads from the drainage basin to the Venice Lagoon (Italy). Environ. Inter. 31: 939-947. PMid:15979715

Comici C., Bussani A. 2007. Analysis of Isonzo River discharge (1998-2005) Boll. Geof. Teor. Appl. 48: 435-454.

Cozzi S., Giani, M. 2011. River water and nutrient discharges in the Northern Adriatic Sea: Current importance and long term changes. Cont. Shelf Res. 31: 1881-1893.

Cucco A., Umgiesser G. 2006. Modelling the Venice lagoon residence time. Ecol. Model. 193: 34-51.

Dufrêne M., Legendre P. 1997. Species assemblages and indicator species: the need for a flexible asymmetrical approach. Ecol. Monogr. 67: 345-366.

Edwards M., Beaugrand G., Hays G.C., Koslow J.A., Richards A.J. 2010. Trends Ecol. Evol. 25: 602-610. PMid:20813425

Facca C., Sfriso A. 2009. Phytoplankton in a transitional ecosystem of the Northern Adriatic Sea and its putative role as an indicator for water quality assessment. Mar. Ecol., 30: 462-479

Fanuko N., Valcic M. 2009. Phytoplankton composition and biomass of the Northern Adriatic lagoon Stella Maris, Croatia. Acta Bot. Croat. 68(1): 29-44.

Gačić M., Kovačević V., Mancero Mosquera I., Mazzoldi A., Cosoli S. 2005. Water fluxes between the Venice Lagoon and the Adriatic Sea. In: Fletcher C.A., Spencer T. (eds), Flooding and environmental challenges for Venice and its lagoon: state of knowledge. Cambridge University Press, Cambridge, 431-444.

Gameiro C., Cartaxana P., Brotas V. 2007. Environmental drivers of phytoplankton distribution and composition in Tagus Estuary, Portugal. Estuar. Coast. Shelf. Sci. 75: 21-34

Guerzoni S., Rossigni P., Sarretta A., Raccanelli S., Ferrari G., Molinaroli E. 2007. POPs in the Lagoon of Venice: budgets and pathways. Chemosphere 67: 1776-1785. PMid:17215019

Hansen H.P., Koroleff F. 1999. Determination of nutrients. In: Grasshoff K., Cremling K., Erhardt M. (eds), Methods of Seawater Analysis. Wiley-VCH Verlag: 159-228.

Heimdal B.R. 1993. Modern Coccolithophorids In: Marine Phytoplankton A Guide To Naked Flagellates And Coccolithophorids. Tanos Editors, Academic Press, pp. 147-248.

Hendey N.I. 1964. An introductory account of the smaller algae of British coastal waters. Part V: Bacillariophyceae, Diatoms. Fishery Invest. Lond. Ser. Iv 5, 317 pp.

Hirsch R.M., Alexander R.B., Smith R.A. 1991. Selection of methods for the detection and estimation of trends in water quality. Water Resour. Res. 27: 803-813.

Holm-Hansen O., Lorenzen C.J., Holmes R.W., Strickland J.D.H. 1965. Fluorometric determination of chlorophyll. J. Conseil Perm. Int. Explor. Mer. 30: 3-15.

Hustedt F. 1930-1966. Die Kiesealgen Von Deutschland, Österreichs Und Der Schweiz Mit Berusichtigung Der Übrigen Länder Europas Sowie Der Angrenzender Mehresgebiete. In: Rabenhorst's Kriptogamen-Flora Von Deutschland, Österreichs Und Der Schweiz. Akad; Verlag. M.B.H. Leipzig. 7: Tl. 2. 920 Pp.: Tl., 2 845 Pp.; Tl. 3, 816 pp.

Justić D., Rabalais N.N., Eugene Turner R., Dortch. Q. 1995. Changes in nutrient structure of river-dominated coastal waters: Stoichiometric nutrient balance and its consequences. Estuar. Coast. Shelf. Sci. 40: 339-356.

Legendre P. Legendre L. 1998. Numerical ecology. 2nd English edition. Elsevier Science BV, Amsterdam, 853 pp.

Longhurst, A. 1998. Ecological Geography of the Sea. Academic Press, San Diego, 398 pp.

Margalef R. 1978. Life-forms of phytoplankton as survival alternatives in an unstable environment. Oceanol. Acta 1: 493-509.

Mozetič P., Fonda Umani S., Cataletto B., Malej A. 1998. Seasonal and inter-annual plankton variability in the Gulf of Trieste (northern Adriatic). J. Mar. Sci. 55: 711-722.

Mozetič P., Solidoro C., Cossarini G., Socal G., Precali R., Francé J., Bianchi F., Smodlaka N., De Vittor C., Fonda Umani S. 2009. Recent trend towards oligotrophication of the northern Adriatic: evidences from chlorophyll a time series. Est. Coast. 33: 362-375.

Nuccio C., Melillo C., Massi L., Innamorati M. 2003. Phytoplankyton abundance, community structure and diversity in the eutrophicated Orbetello lagoon (Tuscany) from 1995 to 2001. Oceanol. Acta 26: 15-25.

Pascher A. 1915. Clorophyceae. In: Die Susswasser Flora Deutschlands, Osterreichs und der Schweiz. Verlags von Gustav Fisher, Jena, Heft 5, 250 pp.

Peragallo H., Peragallo M. 1897-1908. Diatomees Marine de France et des Districts Maritimes Voisins. Micrographe Editeur Grez sur Loing (S. et M.), 419 pp.

Perin G. 1975. L'inquinamento chimico della Laguna di Venezia. In: Cons. depur. Acque della Z. I. Porto Marghera (ed.), Problemi dell'inquinamento lagunare. Venezia: 47-89.

Rampi L., Bernhardt M. 1980. Chiave Per La Determinazione Tassonomica Delle Peridinee Pelagiche Mediterranee: C.N.E.N., Roma (Rt/B10(80) 8): 1-193.

Rampi L., Bernhardt M. 1981. Chiave Per La Determinazione Tassonomica Delle Coccolitoforidee Pelagiche Mediterranee: C.N.E.N., Roma (Rt/B10(81) 13): 1-98.

Reynolds C.S., Smayda T.J. 1998. Principles of species selection and community assembly in the phytoplankton: Further exploration of the mandala: pp. 8-10. In: Reguera B., Blasco J., Fernandez M.L., Wyatt T. (eds), Harmful Algae. Xunta de Galicia and Intergovernmental Oceanographic Commission of UNESCO, Paris.

Sarno D., Zingone, A., Saggiomo V., Carrada G.C. 1993. Phytoplankton biomass and species composition in a Mediterranean coastal lagoon. Hydrobiologia, 271: 27-40.

Schiller J. 1931-37. Dinoflagellatae (Peridineae) Monografischer Behandlung. In: Rabenhorst Kriptogamen-Flora Von Deutschland, Österreichs Und Der Schweiz. Verlag. M. B. H. Leipzig. 10(3) -1, 1-617, (1931-1933), (10)3-2, 1-590, (1933-1937).

Sen P.K. 1968. Estimates of the regression coefficient based on Kendall's tau. JASA, 63: 1379-1389.

Sfriso A., Facca C. 2007. Distribution and production of macrophytes in the lagoon of Venice. Comparison of actual and past abundance. Hydrobiologia, 577: 71-85

Sfriso A., Facca C., Ceoldo S., Marcomini A. 2005. Recording the occurrence of trophic level changes in the lagoon of Venice over the '90s. Environ. Int., 31: 993-1001. PMid:16014311

Shannon C.E., Weaver G. 1949. The mathematical theory of communication, vol. III. Univ. Illinois Press, Urbana, IL, 125 pp.

Sin Y., Wetzel R.L., Anderson I.C. 1999. Spatial and temporal characteristics of nutrient and phytoplankton dynamics in the York River estuary, Virginia: Analysis of long-term data. Estuaries, 22: 260-275.

Socal G., Ghetti, L., Boldrin, A., Bianchi, F. 1985. Ciclo annuale e diversità del fitoplancton nel porto-canale di Malamocco. Laguna di Venezia. Atti - Ist. Veneto Sci. Lett. Arti 143: 15-30

Socal G., Bianchi, F., Comaschi, A., Cioce, F. 1987. Spatial distribution of plankton communities along a salinity gradient in the Venice lagoon. Arch. Oceanogr. Limnol. 21: 19-43.

Socal G., Bianchi F., Alberighi L. 1999. Effects of thermal pollution and nutrient discharges on a spring phytoplankton bloom in the industrial area of the lagoon of Venice. Vie Milieu 49: 19-31.

Socal G., Acri F., Bernardi Aubry F., Berton A., Bianchi F., Capuzzo E., Coppola J., Facca C. Sfriso A. 2006. Analisi dei popolamenti fitoplanctonici nella laguna di Venezia dal 1977 al 2004. Biol. Mar. Medit. 13: 178-184.

Socal G., Acri F., Bastianini M., Bernardi Aubry F., Bianchi F., Cassin D., Coppola J., De Lazzari A., Bandelj V., Cossarini G., Solidoro C. 2008. Hydrography and biogeochemical features in the northern Adriatic Sea during the period 2003-2006. Mar. Ecol. 29: 449-468.

Sokal R., Rohlf J. 1981. Biometry, second ed Freeman, San Francisco, 859 pp.

Solidoro C., Bandelj V., Bernardi Aubry F., Camatti E., Ciavatta S., Cossarini G., Facca C., Franzoi P., Libralato S., Melaku Canu D., Pastres R., Pranovi F., Raichevic S., Socal G., Sfriso A., Sigovini M., Tagliapietra D., Torricelli P. 2010. Response of Venice Lagoon ecosystem to natural and anthropogenic pressures over the last 50 years. In: Kennish M.J., Paerl H.W. (eds), Coastal lagoons: critical habitats of environmental change. CRC Press, Boca Raton, FL, 483-511.

Solidoro C., Melaku Canu D., Cucco A., Umgiesser G. 2004. A partition of the Venice lagoon based on physical properties and analysis of general circulation. J. Mar. Sys. 51: 147-160

Sournia A. 1986. Atlas du phytoplancton marin. Editions du Centre National de la Recerche Scientifique, 1: 1-219, 2: 1-297.

Strickland J.D.H., Parsons T.R. 1972. A practical handbook of seawater analysis. Bull. Fish. Res. Board Can., 167: 1-310.

Tagliapietra D., Zanon V., Frangipane G., Umgiesser G., Sigovini M. 2009. Physiographic zoning of the Venetian Lagoon. In: Campostrini P. (ed.), Scientific Research and Safeguarding of Venice, vol. VII - 2007-2010 results: 161-164.

Theil H. 1950. A rank-invariant method of linear and polynomial regression analysis, 1, 2 and 3. Nederlandse Akademie Wetenschappen Proceedings, 53: 386-392, 521-525, 1397-1412.

Tolomio C., Moschin E., Moro I., Andreoli C. 1999. Phytoplankton de la Lagune de Venise. I: bassins nord et sud (avril 1988 – mars 1989). Vie Milieu 49: 33-44.

Tolomio C., Bullo L. 2001. Prelievi giornalieri di fitoplancton in una stazione del bacino meridionale della laguna di Venezia; aprile 1993 – marzo 1994. Boll. Mus. Civ. Stor. Nat. Venezia 52: 3-23.

Tomas C.R., Hasle G.R. 1997. Identifying marine phytoplankton. Academic Press, New York, 858 pp.

Throndsen J. 1993. The planktonic marine flagellates. In: Marine phytoplankton a guide to naked flagellates and coccolithophorids. Tanos Editors, Academic Press, pp. 7-131.

Uthermöhl H. 1958. Zur Vervollkomnung der quantitativen Phytoplankton- Methodik. Mitt. Int. Ver. Limnol. 9: 1-38.

Voltolina D. 1975. The phytoplankton of the lagoon of Venice: November 1971 - November 1972. Pubbl. Staz. Zool. Napoli 39: 206-340.

Winder M., Cloern J.E. 2010. The annual cycles of phytoplankton biomass. Phil. Trans. R. Soc. B. 365: 3215-3226 PMid:20819814 PMCid:2981943

Zanchettin D., Traverso P., Tomasino M. 2008. Po river discharge: a preliminary analysis of a 200 year time series. Clim. Chang. 89: 411-433.

Zingone A., Totti C., Sarno D., Cabrini M. Caroppo C., Giacobbe M.G., Luglié A., Nuccio C., Socal G. 2010. Fitoplancton: metodiche di analisi quali-quantitativa. In: Socal G., Buttino I., Cabrini M., Mangoni O., Penna A., Totti C. (eds), Metodologie di studio del plancton marino. Manuali e Linee Guida 56/2010 ISPRA, SIBM Roma: pp 213-237.

Zuliani A., Zaggia L., Zonta R. 2005. Freshwater discharge from the drainage basin to the Venice lagoon (Italy), Environ. Int. 31: 929-938. PMid:16009424

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