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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, PE
A 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 Sciences

Volume

65

Pagination

81-91

ISSN

1015-1621

Department/School

Institute for Marine and Antarctic Studies

Publisher

Birkhauser Verlag Ag

Place of publication

Viadukstrasse 40-44, Po Box 133, Basel, Switzerland, Ch-4010

Rights statement

Copyright 2003 EAWAG, Dübendorf

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the biological sciences

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