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Modelling of diffusion boundary-layers in subtidal macroalgal canopies: the response to waves and currents

Citation

Stevens, CL and Hurd, CL and Isachsen, PE, Modelling of diffusion boundary-layers in subtidal macroalgal canopies: the response to waves and currents, Aquatic Sciences, 65, (1) pp. 81-91. ISSN 1015-1621 (2003) [Refereed Article]

Copyright Statement

Copyright 2003 EAWAG, Dübendorf

DOI: doi:10.1007/s000270300007

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:kelp, boundary layers, hydrodynamics, biomechanics, waves, currents, water motion, seaweed
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Hurd, CL (Associate Professor Catriona Hurd)
ID Code:93133
Year Published:2003
Web of Science® Times Cited:21
Deposited By:IMAS Research and Education Centre
Deposited On:2014-07-14
Last Modified:2014-08-04
Downloads:0

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