Poulton, Alex J., Mayers, Kyle M.J., Daniels, Christopher J., Stinchcombe, Mark C., Woodward, E. Malcolm S., Hopkins, Joanne, Wihsgott, Julianne U. and Widdicombe, Claire E. (2019) Dissolution dominates silica cycling in a shelf sea autumn bloom. Geophysical Research Letters, 46 (12), 6765-6774. (doi:10.1029/2019GL083558).
Abstract
Autumn phytoplankton blooms represent key periods of production in temperate and high-latitude seas. Biogenic silica (bSiO2) production, dissolution, and standing stocks were determined in the Celtic Sea (United Kingdom) during November 2014. Dissolution rates were in excess of bSiO2 production, indicating a net loss of bSiO2. Estimated diatom bSiO2 contributed ≤10% to total bSiO2, with detrital bSiO2 supporting rapid Si cycling. Based on the average biomass-specific dissolution rate (0.2 day−1), 3 weeks would be needed to dissolve 99% of the bSiO2 present. Negative net bSiO2 production was associated with low-light conditions (<4 E·m−2·day−1). Our observations imply that dissolution dominates Si cycling during autumn, with low-light conditions also likely to influence Si cycling during winter and early spring.
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- Current Faculties > Faculty of Environmental and Life Sciences > School of Ocean and Earth Science
School of Ocean and Earth Science - Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg) > National Oceanography Centre (pre 2018 reorg)
- Faculties (pre 2011 reorg) > Faculty of Engineering Science & Maths (pre 2011 reorg) > Ocean and Earth Science (pre 2011 reorg)
Current Faculties > Faculty of Environmental and Life Sciences > School of Ocean and Earth Science > Ocean and Earth Science (pre 2011 reorg)
School of Ocean and Earth Science > Ocean and Earth Science (pre 2011 reorg) - Current Faculties > Faculty of Environmental and Life Sciences > School of Ocean and Earth Science > SPITFIRE DTP
School of Ocean and Earth Science > SPITFIRE DTP
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