Marine Eutrophication and Population Dynamics

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Marine Eutrophication and Population Dynamics Edited by Giuseppe Colombo, Ireneo Ferrari, Victor Ugo Ceccherelli & Remigio Rossi 25th European Marine Biology Symposium Institute of Zoology University of Ferrara

Olsen&Olsen, Fredensborg 1992 International Symposium Series Contents Vll

Eutrophication in the marine environment Gray, J. S. - Eutrophication in the sea 3 Rosenberg, R. - Eutrophication-related marine ecosystem studies in western Sweden 17 Josefson, A.B.&J.N. Jensen - Effects of hypoxia on soft-sediment macrobenthos in southern Kattegat, Denmark 21 Fallesen, G. - How sewage discharge, terrestrial runoff and oxygen deficiencies affect the bottom fauna in Arhus Bay, Denmark 29 Schulz, S., G. Airtebjerg, G. Behrends. G. Breuel, P. Ciszewski, U. Horstmann, K. Ko- nonen, E. Kostrichkina, J.-M. Leppdnen, F. M0hlenberg, O. Sandstrom, M. Viitasalo & T. Willen - The present state of the Baltic Sea pelagic ecosystem - an assessment 35 Hesse, K.-J., U. Hentschke & U. Brockmann - A synoptic study of nutrient and phytoplankton characteristics in the German Wadden Sea with respect to coastal eutrophication 45 DeGroodt, E.G., FJ. Los, T.A. Nauta, A. A. Markus & I. de Vries - Modelling cause-effect relationships in eutrophication of marine systems: an inte- gral approach 55 Ruiz, }., F. Guerrero, V. Rodriguez & f. Rodrigues - Chlorophyll-a and the size -biomass spectrum of phytoplankton: analysis of fluctuations in eu- trophic coastal waters 59 Wiltshire, K.H. -The influence of microphytobenthos on oxygen and nutrient fluxes between eulittoral sediments and associated water phases in the Elbe Estuary 63 Martin, M.T. &F.A. Comin - Plankton population dynamics in a salt marsh used as clam nursery 71 Viaroli, P., A. Pugnetti & I. Ferrari - Ulva rigida growth and decomposition pro- cesses and related effects on nitrogen and phosphorus cycles in a coastal lagoon (Sacca di Goro, Po River Delta) 77 Sardd, R., K. Foreman &I. Valiela - Controls of benthic invertebrate populations and production of salt marsh tidal creeks: experimental enrichment and short- and long-term effects 85 Flothmann, S. & I. Werner - Experimental eutrophication on an intertidal sand- flat: effects on microphytobenthos, meio- and macrofauna 93 Ros, f.D. & M.J. Cardell - Seasonal distribution pattern of polychaetes from a heavily polluted coastal area (Barcelona, NE Spain, NW Mediterranean) 101 Piriou, J.-Y. & A. Menesguen - Environmental factors controlling the Ulva sp. blooms in Brittany (France) Ill Riggio, S., G. D'Anna & M.P. Sparla - Coastal eutrophication and settlement of mussel beds in NW Sicily: remarks on their significance 117 Beusekom, f.E.E. van & A. Weber - Decreasing diatom abundance in the North Sea: the possible significance of aluminium 121 Carpene, E., L. Boni, S. Naldi & A. Gorini - Effects of zinc, copper, iron and cad- mium on the marine algae Cylindrotheca fusiformis and Prorocentruin micans 129

Population dynamics of marine organisms Margalef, R. - Population dynamics converges with succession theory 135 Castel,}. & A. Feurtet- Fecundity and mortality rates of the copepod Eurytemora afftnis (Poppe) in the Gironde Estuary 143 Gaudy, R. - Seasonal variations of some population parameters of the copepod Acartia tonsa in a Mediterranean lagoon 151 Antonopoulou, E. & R.H. Emson - Aspects of the population dynamics of Palae- monetes various (Leach) 157 Guarino, S. M. & M. de Nicola - Population dynamics of Idotea baltica (Pallas) (Crustacea, Isopoda) in the Bay of Naples 165 Fava, G. & C. Fusari - Variations of life-history traits in marine and lagoon populations of the copepod Fisbe holothuriae Humes, grown under different salinities 169 Bachelet, G., f. Guillou & P.-J. Labourg - Adult-larval and juvenile interactions in the suspension-feeding bivalve Cerastoderma edule (L.): field observa- tions and experiments 175 viii Mattila, ]. - How do intermediate infaunal predators function between fish predators and infaunal prey? Some tests in aquaria 183 West, T.L. & W.G. Ambrose, Jr. - Abiotic and biotic effects on population dynamics of oligohaline benthic invertebrates 189 Scheltema, R.S. - Passive dispersal of planktonic larvae and the biogeography of tropical sublittoral invertebrate species 195 Barthel, D. - Population dynamics of the sponge Halichondria panicea (Pallas) in Kiel Bight 203 Velimirov, B. & M. G. Weinbauer - Population structure and growth of the Medi- terranean octocoral Eunicella cavolinii 211 Male), A. & M. Male) - Population dynamics of the jellyfish Pelagia noctiluca (Forsskal, 1775) 215 Arntz, W.E., T. Brey, D. Gerdes, M. Gorny, J. Gutt, S. Hain & M. Klages - Patterns of life history and population dynamics of benthic invertebrates under the high Antarctic conditions of the Weddell Sea 221 Duchene, J.C. - A model of spawn periodicity and population dynamics of Thelepus extensus (Hutchings) (Annelida: Polychaeta) in Kerguelen 231 Young, C. M. - Episodic recruitment and cohort dominance in echinoid populations at bathyal depths 239 Woodham, A. - Distribution and population studies on Myzostoma cirriferum Leuckart (Myzosomida) in a Scottish sea loch 247 Tyler, P. A., J.D. Gage&D.S.M. Billett - Reproduction and recruitment in deep- sea invertebrate populations in the NE Atlantic Ocean: a review of the options 257 Rowell, T. W. - Destruction of a clam population (Mya arenaria Linne) through the synergistic effects of habitat change and predation by a nemertean (Cerebratulus lacteus Verrill) 263 Yonow, N. & }. S. Ryland - Growth and life history parameters in Acteon tornatilis (L.) (Opisthobranchia: Cephalaspidea) 271 Novak, R. - Dynamic aspects of seagrass-nematode community structure .... 277 Kiinitzer, A. - Does settlement influence population dynamics of macrobenthos? A case study in the central North Sea 285 Mistri, M. & V. U. Ceccherelli - Field population dynamics of six harpacticoid species in a lagoon of the Po River Delta 293 Levi, D., M.G. Andreoli & P. Rizzo - Growth curves from representative samples of fish populations as possible hints for the identification of unit stocks. The case study of red mullet from the Sicilian Channel 299 Orsi Relini, L., F. Fiorentino & A. Zamboni - Growth of the Mediterranean hake. Experiences gained in the Ligurian Sea 307 Leo, G. De, M. Gatto & L. Ghezzi - Taxes and the dynamics of overexploited open-access fisheries 317

The Adriatic Sea Colombo, G. - Introduction 325 Brambati, A. - Origin and evolution of the Adriatic Sea 327 Fonda Umani, S., P. Franco, E. Ghirardelli & A. Male) - Outline of oceanography and the plankton of the Adriatic Sea 347 Ott, ].A. - The Adriatic benthos: problems and perspectives 367 Bombace, G. - Fisheries of the Adriatic Sea 379

Author index 391 Keyword index 392 Preceding European Marine Biology Symposia 393