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Shaken and stirred: the fundamental role of water motion in resource acquisition and seaweed productivity
Citation
Hurd, CL, Shaken and stirred: the fundamental role of water motion in resource acquisition and seaweed productivity, Perspectives in Phycology, 4, (2) pp. 73-81. ISSN 2364-6993 (2017) [Refereed Article]
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DOI: doi:10.1127/pip/2017/0072
Abstract
Water motion is the least studied of the primary drivers of seaweed productivity. In 50% of field studies, seaweed growth and productivity is reduced in slow compared to fast flows and this is partly explained by the reduced transport of dissolved nutrients (e.g. nitrogen) across thicker diffusion boundary layers (DBLs) that form in slow flows. Alternative/additional explanations include increased light heterogeneity stimulating productivity at wave-exposed sites, and a drag-induced enhancement of inorganic carbon uptake and allocation to structural material. Higher growth rates at wave-sheltered sites may be explained by the accumulation of nitrogen regenerated by associated fauna within DBLs, whereas reduced growth in slow flows may be a result of OH- or O2 accumulation rather than reduced nutrient supply.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | water motion, seaweed, productivity, hydrodynamics, nutrient uptake, nitrogen |
| Research Division: | Biological Sciences |
| Research Group: | Plant Biology |
| Research Field: | Phycology (incl. Marine Grasses) |
| 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: | 117835 |
| Year Published: | 2017 |
| Deposited By: | Centre for Ecology and Biodiversity |
| Deposited On: | 2017-06-28 |
| Last Modified: | 2017-09-04 |
| Downloads: | 0 |
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