Interaction between seston quantity and quality and benthic suspension feeders in the Oosterschelde, The Netherlands
Smaal, A.C.; Verhagen, J.H.G.; Coosen, J.; Haas, H.A. (1986). Interaction between seston quantity and quality and benthic suspension feeders in the Oosterschelde, The Netherlands, in: Muus, K. (Ed.) Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985. Ophelia: International Journal of Marine Biology, 26: pp. 385-399
In: Muus, K. (Ed.) (1986). Proceedings of the 20th European Marine Biology Symposium: Nutrient Cycling. Processes in Marine Sediments, Hirtshals, Denmark, 9-13 September 1985. Ophelia: International Journal of Marine Biology, 26. Ophelia Publications: Helsingør. ISBN 87-981066-4-3. 477 pp., meer
In: Ophelia: International Journal of Marine Biology. Ophelia Publications: Helsingør. ISSN 0078-5326, meer
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Documenttype: Congresbijdrage
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| Auteurs | | Top |
- Smaal, A.C.
- Verhagen, J.H.G.
- Coosen, J., meer
- Haas, H.A., meer
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| Abstract |
The benthic suspension feeders Cerastoderma edule and Mytilus edulis form the major part of the biomass of all ecogroups in the Oosterschelde. Mean biomass on mussel culture plots in tbe western part was 340 gADW /m² and on cockle banks 63 gADW /m². Because of filtration a seston flux towards the bottom exists of 170-600 g suspended particulate matter/m²/day on an annual average basis. Of this biodeposited material the greater part is resuspended immediately. Because 20-25% of the total volume is filtered per day, limitation of algal biomass is expected. Density and growth show a decrease from west to east, not fully corresponding with food quantity and quality. Some model calculations of seston depletion in relation to current speed, water depth and length of mussel and cockle banks are presented, with reference to future reduction of current velocities because of tbe construction of a storm-surge barrier. |
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