Trophodynamic variations on microtidal North Mediterranean sandy beaches

• Autorzy: Vassallo P. , Fabiano M.
• Języki publikacji: EN

Abstrakty

EN

Trophic models of the micro and meiobenthic community of six sandy beaches on the Ligurian coast (north-western Mediterranean Sea) have been performed to assess variations in structure and function of the ecosystem. A novel approach based on the determination of the feeding predisposition of the benthic community revealed that there is a significant shift in the trophodynamics of the system with respect to environmental constraints. Along an emerged-submerged gradient the benthic community displayed a clear trend from a fundamentally detritus-dependent structure to an autotrophic, more balanced and diversified one. The trends analysed focus on the importance of the swash zone as a transitional area between the land and the sea that is characterised by a high diversity and activity of the trophic network.

Słowa kluczowe

EN

beach environment; trophodynamics; swash zone

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2005
• Tom: No. 47 (3)
• Strony: 351--364
• Opis fizyczny: bibliogr. 27 poz., tab., wykr.

Twórcy

autor

Vassallo P.

• Department for the Study of the Territory and its Resources, University of Genoa, Corso Europa 26, IT–16132 Genova, Italy

autor

Fabiano M.

• Department for the Study of the Territory and its Resources, University of Genoa, Corso Europa 26, IT–16132 Genova, Italy

Bibliografia

• [1] Azam F., Fenchel T., Field J. G., Gray J. S., Meyer-Reil L.A., Thingstad F., 1983, The ecological role of water-column microbes in the sea, Mar. Ecol. Prog. Ser., 10, 257–263.
• [2] Christensen V., Walters C. J., Pauly D., 2000, Ecopath with Ecosim Version 4, Help system©, British Columbia Univ., Fish. Cent., Vancouver, Canada and ICLARM, Penang.
• [3] Defeo O., de Alava A., 1995, Effects of human activities on long-term trends in sandy beach populations: the wedge clam Donax hanleyanus in Uruguay, Mar. Ecol. Prog. Ser., 123, 73–82.
• [4] Fabiano M., Marin V., Misic C., Moreno M., Salvo V. S., Vezzulli L., 2004a, Sedimentary organic matter and bacterial community in microtidal mixed beaches of the Ligurian Sea (NW Mediterranean), Chem. Ecol., 20 (6), 423–435.
• [5] Fabiano M., Misic C., Moreno M., Salvo V. S., Covazzi A., 2002, Ecological features of Ligurian beaches exposed to different hydrodynamic forcing, [in:] Proc. Int. MEDCOAST Workshop on Beaches of the Mediterranean and Black Sea: Dynamics, Regeneration, Ecology and Management, E. Özhan (ed.), 24–27 October 2000, Kuşadasí, 201–213.
• [6] Fabiano M., Vassallo P., Vezzulli L., Salvo V. S., Marques J. C., 2004b, Temporal and spatial change of Exergy and Ascendency in different benthic marine ecosystems, Energy, 29 (11), 1697–1712.
• [7] Finn J. T., 1976, Measures of ecosystem structure and function derived from analysis of flows, J. Theor. Biol., 56 (2), 363–380.
• [8] Heymans J. J., Baird D., 1995, Energy flows in the Kromme estuarine ecosystem, St. Francis Bay, South Africa, Estuar. Coast. Shelf Sci., 41 (1), 39–59.
• [9] Heymans J. J., McLachlan A., 1996, Carbon budget and network analysis of a highenergy beach/surf-zone ecosystem, Estuar. Coast. Shelf Sci., 43 (4), 485–505.
• [10] Heymans J. J., Ulanowicz R. E., Bondavalli C., 2002, Network analysis of the South Florida Everglades graminoid marshes and comparison with nearby cypress ecosystems, Ecol. Model., 149 (1)–(2), 5–23.
• [11] Leguerrier D., Niquil N., Boileau N., Rzeznik J., Sauriau P., Le Moine O., Bacher C., 2003, Numerical analysis of the food web of an intertidal mudflat ecosystem on the Atlantic coast of France, Mar. Ecol. Prog. Ser., 246, 17–37.
• [12] Lercari D., Defeo O., 1999, Effects of freshwater discharge in sandy beach populations: the mole crab Emerita brasiliensis in Uruguay, Estuar. Coast. Shelf Sci., 49 (4), 457–468.
• [13] Lindeman R. L., 1942, The trophic-dynamic aspect of ecology, Ecology, 23 (4), 399–418.
• [14] Lubchenco J., Allison G. W., Navarrete S. A., Menge B. A., Castilla J. C., Defeo O., Folke C., Kussakin O., Norton T., Wood A. M., 1995, Coastal systems, [in:] Global biodiversity assessment. Section 6: Biodiversity and ecosystem functioning: ecosystem analyses, pp. 370–381, (United Nation Environment Programme ed.), Cambridge Univ. Press, Cambridge.
• [15] Meyer-Reil L. A., 1983, Benthic responses to sedimentation events during autumn to spring at a shallow water station in the Western Kiel Bight. II. Analysis of benthic bacterial populations, Mar. Biol., 77 (3), 247–256.
• [16] Ortiz M., Wolff M., 2002, Trophic model of four benthic communities in Tongoy Bay (Chile): comparative analysis and preliminary assessment of management strategies, J. Exp. Mar. Biol. Ecol., 268 (2), 205–235.
• [17] Parker J. G., 1983, A comparison of methods used for the measurement of organic matter in marine sediment, Chem. Ecol., 1, 201–210.
• [18] Plante-Cuny M. R., 1974, Evaluation par spectrophotomètrie des teneurs en chlorophyll-a functionelle et en phaeopigments des substrats meubles marins, O.R.S.T.O.M., Nosy-Bé.
• [19] Romeyn K., Bowman L.A., 1983, Food selection and consumption by estuarine nematodes, Hydrobiol. Bull., 17 (2), 103–109.
• [20]Schoeman D. S., McLachlan A., Dugan J. E., 2000, Lessons from a disturbance experiment in the intertidal zone of an exposed sandy beach, Estuar. Coast. Shelf Sci., 50 (6), 869–884.
• [21] Ulanowicz R. E., 1986, Growth and development: ecosystems phenomenology, Springer-Verl., New York, 203 pp.
• [22] Ulanowicz R. E., 2004,On the nature of ecodynamics, Ecol. complexity, 1, 341–354.
• [23] Ulanowicz R. E., Abarca-Arenas L. G., 1997, An informational synthesis of ecosystem structure and function, Ecol. Model., 95 (1), 1–10.
• [24] Vassallo P., Fabiano M., Vezzulli L., Sandulli R., Marques J. C., Jørgensen S. E., Assessing the health of coastal marine ecosystems: a holistic approach based on sediment micro and meio-benthic measures, Ecol. Indicat., (in press).
• [25] Warwick R. M., Price R., 1979, Ecological and metabolic studies on free-living nematodes from an estuarine mud-flat, Estuar. Coast. Mar. Sci., 9, 257–271.
• [26] Wieser W., 1960, Benthic studies in Buzzard Bay. II. The meiofauna, Limnol. Oceanogr., 5 (2), 121–137.
• [27] Zann L. P., 1997, The state of the marine environment report for Australia (SOMER): process, findings and perspectives, Ocean Coast. Manage., 33, 63–86.