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Modelling of diffusion boundary-layers in subtidal macroalgal canopies: the response to waves and currents
journal contribution
posted on 2023-05-18, 02:03 authored by Stevens, CL, Catriona HurdCatriona Hurd, Isachsen, PEA model is described for nutrient uptake by the giant kelp Macrocystis integrifolia Bory that incorporates blade boundary-layer dynamics. The model input is derived from field measurements of water motion near wave-exposed and wave-sheltered M. integrifolia beds. Factors considered in the model include (i) the distinction between uni-directional and oscillatory flow in wave-exposed and -sheltered locations, (ii) the reduction in boundary-layer thickness due to wave-driven flow and (iii) the tight packing of M. integrifolia beds at low tide which can reduce the in-canopy flow rates. The velocities are incorporated into the model which indicates that uptake rates can vary between 5 to 300% of the steady-state equilibrium value depending on the flow regime.
History
Publication title
Aquatic SciencesVolume
65Pagination
81-91ISSN
1015-1621Department/School
Institute for Marine and Antarctic StudiesPublisher
Birkhauser Verlag AgPlace of publication
Viadukstrasse 40-44, Po Box 133, Basel, Switzerland, Ch-4010Rights statement
Copyright 2003 EAWAG, DübendorfRepository Status
- Restricted