Survival of benthic foraminifera under hypoxic conditions: Results of an experimental study using the CellTracker Green method

F. Pucci, E. Geslin, C. Barras, C. Morigi, A. Sabbatini, A. Negri, F.J. Jorissen

    Publikation: Bidrag til tidsskriftArtikelForskningpeer review

    36 Citationer (Scopus)

    Abstrakt

    We present results of an experimental study, in which benthic foraminiferal faunas have been kept under strongly hypoxic conditions. Sixteen short sediment cores from a 35 m deep site in the Adriatic Sea were incubated for a maximum of 69 days. Some of the cores were air-bubbled and remained well oxygenated throughout the experiment. The other cores were bubbled with nitrogen; the overlying waters of these cores became strongly hypoxic, whereas the sediment remained virtually without oxygen. Live foraminifera have been inventoried with the CellTracker Green method. Our results show that all dominant taxa survive strongly hypoxic conditions. Nouria polymorphinoides and Nonionella turgida show a clear tendency to move to the sediment surface in the nitrogen-bubbled cores, whereas Bulimina spp. and Eggerella scabra do not show such a migrational response. We suggest that this is a response to the concentration of nutritional resources at the sediment-water interface.

    OriginalsprogEngelsk
    Sider (fra-til)336-351
    Antal sider16
    TidsskriftMarine Pollution Bulletin
    Vol/bind59
    Udgave nummer8-12
    DOI
    StatusUdgivet - 2009

    Programområde

    • Programområde 3: Energiressourcer

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