Organic matter in sediments of canyons and open slopes of the Portuguese, Catalan, Southern Adriatic and Cretan Sea margins (Articolo in rivista)

Type
Label
  • Organic matter in sediments of canyons and open slopes of the Portuguese, Catalan, Southern Adriatic and Cretan Sea margins (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.dsr.2009.11.008 (literal)
Alternative label
  • Pusceddu A. (a), Bianchelli S. (a), Canals M. (b), Sanchez-Vidal A. (b), Durrieu De Madron X. (c), Heussner S. (c), Lykousis V. (d), de Stigter Henko (e), Trincardi Fabio (f), Danovaro R.(a) (2010)
    Organic matter in sediments of canyons and open slopes of the Portuguese, Catalan, Southern Adriatic and Cretan Sea margins
    in Deep-sea research. Part 1. Oceanographic research papers
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pusceddu A. (a), Bianchelli S. (a), Canals M. (b), Sanchez-Vidal A. (b), Durrieu De Madron X. (c), Heussner S. (c), Lykousis V. (d), de Stigter Henko (e), Trincardi Fabio (f), Danovaro R.(a) (literal)
Pagina inizio
  • 441 (literal)
Pagina fine
  • 457 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 57(3) (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (a) Dipartimento di Scienze del Mare, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy (b) GRC Geociències Marines, Departament d’Estratigrafia, P. i Geociències Marines, Universitat de Barcelona, E-08028 Barcelona, Spain (c) CEFREM, UMR 5110 CNRS-University of Perpignan, F-66860 Perpignan Cedex, France (d) Hellenic Center for Marine Research, Hellinikon, Athens 16604, Greece (e) Royal Netherlands Institute For Sea Research, P.O. Box 59, NL-1790 AB Den Burg, Texel, The Netherlands (f) Istituto Scienze Marine, CNR, Sede di Bologna, Via P. Gobetti 101, 40129 Bologna, Italy (literal)
Titolo
  • Organic matter in sediments of canyons and open slopes of the Portuguese, Catalan, Southern Adriatic and Cretan Sea margins (literal)
Abstract
  • We describe the quantitative and compositional (phytopigment, protein, carbohydrate and lipid) patterns of sedimentary organic matter along bathymetric gradients in seven submarine canyons and adjacent open slopes located at four European regions: one along the NE Atlantic and three along the Mediterranean continental margins. The investigated areas are distributed along a putative longitudinal gradient of decreasing primary production from the Portuguese (northeastern Atlantic Ocean), to the Catalan (western Mediterranean Sea), Southern Adriatic (central Mediterranean Sea) and Southern Cretan (eastern Mediterranean Sea) margins. Sediment concentrations of organic matter differed significantly between the Portuguese margin and the Mediterranean regions and also from one study area to the other within the Mediterranean Sea. Differences in quantity and composition of sediment organic matter between canyons and open slopes were limited and significant only in the eutrophic Portuguese margin, where the differences were as large as those observed between regions (i.e. at the mesoscale). These results suggest that the overall trophic status of deep margin sediments is controlled mostly by the primary productivity of the overlying waters rather than by the local topography. Moreover, we also report that the quantity and nutritional quality of sediment organic matter in canyons and adjacent open slopes do not show any consistent depth-related pattern. Only the Nazaré and Cascais canyons in the Portuguese margin, at depths deeper than 500 m, displayed a significant accumulation of labile organic matter. The results of our study underline the need of further investigations of deep margins through sampling strategies accounting for adequate temporal and spatial scales of variability. (literal)
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