Biogenic silica and silicic acid benthic fluxes of a North-eastern Atlantic Abyssal Locality, supplement to: Ragueneau, Olivier; Gallinari, Morgane; Corrin, Lydie; Grandel, Sibylle; Hall, Per; Hauvespre, Anne; Lampitt, Richard Stephen; Rickert, Dirk; Ståhl, Henrik; Tengberg, Anders; Witbaard, Rob (2001): The benthic silica cycle in the Northeast Atlantic: annual mass balance, seasonality, and importance of non-steady-state processes for the early diagenesis of biogenic opal in deep-sea sediments. Progress in Oceanography, 50(1-4), 171-200

Olivier Ragueneau, Morgane Gallinari, Lydie Corrin, Sibylle Grandel, Per Hall, Anne Hauvespre, Richard Stephen Lampitt, Dirk Rickert, Henrik Ståhl, Anders Tengberg & Rob Witbaard
Within the framework of the EU-funded BENGAL programme, the effects of seasonality on biogenic silica early diagenesis have been studied at the Porcupine Abyssal Plain (PAP), an abyssal locality located in the northeast Atlantic Ocean. Nine cruises were carried out between August 1996 and August 1998. Silicic acid (DSi) increased downward from 46.2 to 213 µM (mean of 27 profiles). Biogenic silica (BSi) decreased from ca. 2% near the sediment-water interface to <1% at depth....
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