Simulations of ecosystem response during the sapropel S1 deposition event (Articolo in rivista)

Type
Label
  • Simulations of ecosystem response during the sapropel S1 deposition event (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.palaeo.2005.09.032 (literal)
Alternative label
  • Bianchi D. (1); Zavatarelli M. (1); Pinardi N. (1); Capozzi R. (1); Capotondi L. (2); Corselli C. (3); Masina S. (4) (2006)
    Simulations of ecosystem response during the sapropel S1 deposition event
    in Palaeogeography, palaeoclimatology, palaeoecology; ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, AMSTERDAM (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bianchi D. (1); Zavatarelli M. (1); Pinardi N. (1); Capozzi R. (1); Capotondi L. (2); Corselli C. (3); Masina S. (4) (literal)
Pagina inizio
  • 265 (literal)
Pagina fine
  • 287 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • doi:10.1016/j.palaeo.2005.09.032 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 235 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1-3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Università di Bologna, Centro Interdipartimentale per la Ricerca sulle Scienze Ambientali, Via S. Alberto 163, 48100 Ravenna, Italy (2) ISMAR, Istituto di Scienze del Mare, C.N.R., Via Gobetti 101, 40129 Bologna, Italy (3) Università di Milano-Bicocca Dipartimento di Scienze Geologiche e Geotecnologiche, Piazza dell'Ateneo Nuovo 1, 20126 Milan, Italy (4) Istituto Nazionale di Geofisica e Vulcanologia, Via Donato Creti 12, 40128 Bologna, Italy (literal)
Titolo
  • Simulations of ecosystem response during the sapropel S1 deposition event (literal)
Abstract
  • A one-dimensional ecosystem numerical model is used to simulate the ecosystem changes that could have occurred in the open ocean areas of the Eastern Mediterranean Sea during the Climatic Optimum interval (9500-6000 B.P., Mercone et al. [Mercone, D., Thomson, J., Croudace, I.W., Siani, G., Pateme, M., Troelstra, S., 2000. Duration of S1, the most recent sapropel in the eastern Mediterranean Sea, as indicated by accelerator mass spectrometry radiocarbon and geochemical evidence. Paleoceanography 15, 336-347]). In this period the S1 sapropel was deposited. S1 is the most recent sapropel in the succession of organic carbon-rich layers intercalated in normal Neogene sedimentary sequences. Different theories have been invoked in order to explain the deposition of this peculiar layer. Our simulations seem to indicate that the modified thermohaline circulation, supplying oxygen only in the first 500 m of the water column, is responsible for the sapropel deposition when higher productivity is allowed in the euphotic zone. The model shows the importance in this process of bacteria that consume oxygen by decomposing the Particulate Organic Matter (POM) produced in the upper water column. The sinking velocity of POM partially regulates the timescale of the occurrence of anoxia at the bottom and in the whole water column, allowing the relatively rapid onset of sapropel deposition. (c) 2005 Elsevier B.V. All rights reserved. (literal)
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