Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 430812
Title Seasonal variation in mineralization rates (C-N-P-Si) of mussel Mytilus edulis biodeposits
Author(s) Jansen, H.M.; Verdegem, M.C.J.; Smaal, A.C.
Source Marine Biology 159 (2012)7. - ISSN 0025-3162 - p. 1567 - 1580.
Department(s) Aquaculture
Aquaculture and Fisheries
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) la-madeleine quebec - sediment-water interface - biogeochemical fluxes - temperature-dependence - benthic respiration - nutrient fluxes - fresh-water - new-zealand - decomposition - culture
Abstract To determine seasonal variability in mineralization dynamics of mussel biodeposits, we applied a multiple-element approach measuring mineralization rates of carbon (C), nitrogen (N), phosphorus (P) and silicate (Si) during three periods (March, August and November). The results of this study showed that mineralization rates vary between seasons and between elements and that mineralization dynamics were influenced by both temperature and biodeposit nutrient composition. Mineralization rates were 3.2 ± 0.4 mmol C, 0.17 ± 0.04 mmol N, 0.06 ± 0.02 mmol P and 3.91 ± 3.75 mmol Si per gram biodeposit (DW) per day, which represented 24 % of the particulate organic C and 17 % of the particulate organic N in mussel biodeposits. Seasonal variability was largest for Si mineralization with 60–80-fold higher rates measured in March compared to August and November. This difference is most likely related to the difference in biodeposit nutrient composition. It was furthermore shown that the labile fraction of biodeposits became mineralized after, respectively, 18, 9 and 13 days during the experimental periods in March, August and November. This indicates that temperature enhances biodeposit decomposition with approximately 2–3 times faster turnover at a 10 °C temperature interval (Q10).
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