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Fish assemblages on the slope in the Catalan Sea (western Mediterranean): influence of a submarine canyon

Abstract

The analysis of 35 bottom trawls taken on the slope in the Catalan Sea (western Mediterranean) has shown the existence of two different demersal fish assemblages occurring on the upper (350–650 m) and middle (1150–1300 m) slope. The middle slope assemblage is characterized by much higher values in some ecological parameters such biomass and mean fish weight, resulting from the dominance of middle to large size species (e.g. Alepocephalus rostratus, Trachyrhynchus trachyrhynchus, Mora mom). On the upper slope two different stations were considered, one inside and the other outside a submarine canyon. Only slight differences were found in species composition, and hence sample and species were not clearly separated by a correspondence analysis. However, some interesting ecological differences exist between these two stations. Much higher values in abundance and biomass inside the canyon were indicative of higher food availability there. Moreover, a drop in mean fish weight was also noted inside the canyon. The analysis of size distributions in the commonest species along the upper slope showed that the submarine canyon acts as a recruiting ground for some of them.

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*Instirut de Ciencies del Mar-CSIC, Passeig Nacional s/n, 08039 Barcelona, Spain
Institut d'Esrudis Avanqats de les Illes Balears, Campus Universitari, 07071 Palma de Mallorca, Spain
Centre Oceanogràfic de les Balears-I.E.O., Apartado 291,07080 Palma de Mallorca, Spain
References
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Allué C., 1985. Compositión y estructura de la comunidad de peces demersales frente a Barcelona (Años 1980–1981). Thalassas, 3,5790.
Bianchi G. & Høisaeter T., 1992. Relative merits of using numbers and biomass in fish community studies. Marine Ecology Progress Series, 85, 2533.
Bovee F. De, Guidi L.D. & Soyer J., 1990. Quantitative distribution of deep-sea meiobenthos in the north-western Mediterranean (Gulf of Lion). Continental Shelf Research, 10, 11231145.
Carpine C., 1970. Écologie de l'étage bathyal dans la Mediterranée occidentale. Memoires de l'Institut Océanographique. Monaco, 2, 1146.
Carrassón M. & Matallanas J., 1990. Preliminary data about the feeding habits of some deep-sea Mediterranean fishes. Journal of Fish Biology, 36, 461463.
Fredj G. & Maurin C., 1987. Les poissons dans la banque de données MEDIFAUNE. Application à l'étude des caracteristiques de la faune ichtyologique méditerranéenne. Cybium, 11, 217299.
Golovan G.A. & Pakhorukov N.P., 1980. New data on the ecology and morphometry of Alepocephalus rostratus (Alepocephalidae). Journal of Ichthyology, 20(3), 7783.
Gordon J.D.M., 1986. The fish populations of the Rockall Trough. Proceedings of the Royal Society of Edinburgh. B, 88, 191204.
Gordon J.D.M. & Bergstad O.A., 1992. Species composition of demersal fish in the Rockall Trough, north-eastern Atlantic, as determined by different trawls. Journal of the Marine Biological Association of the United Kingdom, 72, 213230.
Gordon J.D.M. & Duncan J.A.R., 1985. The ecology of deep-sea benthic and benthopelagic fish on the slopes of the Rockall Trough, north-eastern Atlantic. Progress in Oceanography, 15, 3769.
Gordon J.D.M. & Mauchline J., 1990. Depth-related trends in diet of a deep-sea bottom-living fish assemblage of the Rockall Trough. In Trophic relationships in the marine environment. Proceedings of the 24th European Marine Biology Symposium (ed. M. Barnes and R.N. Gibson), pp. 439452. Aberdeen: Aberdeen University Press.
Haedrich R.L. & Merrett N.R., 1988. Summary atlas of deep-living demersal fishes in the North Atlantic Basin. Journal of Natural History, 22, 13251362.
Haedrich R.L., Rowe G.T. & Polloni P.T., 1975. Zonation and faunal composition of epibenthic populations on the continental slope south of New England. Journal of Marine Research, 33, 191212.
Hecker B., 1990. Variation in megafaunal assemblages on the continental margin south of New England. Deep-Sea Research, 37A, 3757.
Légendre L. & Légendre P., 1986. Écologie numérique. La structure des données écologiques. Paris: Masson.
Macpherson E., 1979. Ecological overlap between macrourids in the western Mediterranean Sea. Marine Biology, 53, 149159.
Macpherson E., 1981. Resource partitioning in a Mediterranean demersal fish community. Marine Ecology Progress Series, 4, 183193.
Macquart-Moulin C. & Patriti G., 1993. Canyons sous-marins et advection vers le talus continental du plancton néritique. Oceanologica Acta, 16, 179189.
Marshall N.B. & Merrett N.R., 1977. The existence of a benthopelagic fauna in the deep-sea. Deep-Sea Research, 24, supplement, 483497.
Matallanas J., 1979. Contributión al estudio de la ictiofauna de la zona explotada por las barcas de pesca de Blanes (Mar Catalana). Bolletí de la Societat d'Història Natural de les Balears, 23, 127145.
Maurin C., 1962. Étude des fonds chalutables de la Méditerranée occidentale (Écologie et Peche). Résultats des campagnes des navires oceanographiques ‘Président-Théodore-Tissier’ 1957 à 1960 et Thalassa’ 1960 et 1961. Revue des Travaux de I'lnstitut des Peches Maritimes. Paris, 26, 163218.
Maurin C., 1968. Écologie ichtyologique des fonds chalutables atlantiques (de la Baie Ibéro Marocaine à la Mauritanie) et de la Méditerranee occidentale. Révue des Travaux de l'Institut des Pêches Maritimes. Paris, 32, 1147.
Merrett N.R., Gordon J.D.M., Stehmann M. & Haedrich R.L., 1991. Deep demersal fish assemblage structure in the Porcupine Seabight (eastern North Atlantic): slope sampling by three different trawls compared. Journal of the Marine Biological Association of the United Kingdom, 71, 329358.
Merrett N.R. & Marshall N.B., 1981. Observations on the ecology of deep-sea bottom-living fishes collected off northwest Africa (08°27′N). Progress in Oceanography, 9, 185244.
Monaco A., Biscaye P., Soyer J., Pocklington R. & Heussner S., 1990. Particle fluxes and ecosystem response on a continental margin: the 1985–1988 Mediterranean ECOMARGE experiment. Continental Shelf Research, 10, 809839.
Orsi Relini L. & Relini G., 1973. Nuove segnalazioni di pesci nel mar Ligure e composizione dell'ittiofauna (Osteitti) dei fondi batiale strascicabili. Bollettino dei Musei e Istituti Biologici della Università di Genova, 41, 5167.
Reyss D., 1971. Les canyons sous-marins de la mer Catalane, le rech du Cap et le rech LacazeDuthiers. III. Les peuplements de macrofaune benthique. Vie et Milieu, 22(3B), 529613.
Rowe G.T., 1972. The exploration of submarine canyons and their benthic faunal assemblages. Proceedings of the Royal Society of Edinburgh. B, 73, 159169.
Rowe G.T., Polloni P.T. & Haedrich R.L., 1982. The deep-sea macrobenthos on the continental margin of the northwest Atlantic Ocean. Deep-Sea Research, 29A, 257278.
Sardà F., Cartes J.E. & Company J.B., in press. Spatio-temporal variations in megabenthos abundance on three different habitats of the Catalan deep-sea (western Mediterranean). Marine Biology.
Scheffé H., 1959. The analysis of variance. New York: Wiley.
Stefanescu C. & Cartes J.E., 1992. Benthopelagic habits of adult specimens of Lampanyctus crocodilus (Risso, 1810) (Osteichthyes, Myctophidae) in the western Mediterranean deep slope. Scientia Marina, 56, 6974.
Stefanescu C., Lìoris D. & Rucabado J., 1992a. Deep-living demersal fishes in the Catalan Sea (western Mediterranean) below a depth of 1000 m. Journal of Natural History, 26, 197213.
Stefanescu C., Lloris D. & Rucabado J., 1993. Deep-sea fish assemblages in the Catalan Sea (western Mediterranean) below a depth of 1000 m. Deep-Sea Research l, 40, 695707.
Stefanescu C., Rucabado J. & Lloris D., 1992b. Depth-size trends in western Mediterranean demersal deep-sea fishes. Marine Ecology Progress Series, 81, 205213.
Sulak K.J., 1982. A comparative taxonomic and ecological analysis of temperate and tropical demersal deep-sea fish faunas in the western North Atlantic. PhD thesis, University of Miami, Florida.
Whitehead P.J.P., Bauchot M.-L., Hureau J.-C., Nielsen J. & Tortonese E. (ed.), 1984. Fishes of the north-eastern Atlantic and the Mediterranean, 1. Paris: Unesco.
Whitehead P.J.P., Bauchot M.-L., Hureau J.-C., Nielsen J. & Tortonese E. (ed.), 1986a. Fishes of the north-eastern Atlantic and the Mediterranean, 2. Paris: Unesco.
Whitehead P.J.P., Bauchot M.-L., Hureau J.-C., Nielsen J. & Tortonese E. (ed.), 1986b. Fishes of the north-eastern Atlantic and the Mediterranean, 3. Paris: Unesco.
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Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
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