The influence of water motion on the growth rate of the kelp Laminaria digitata
The shallow water kelp Laminaria digitata , abundant in coastal zones of the North Atlantic, is exposed to a range of hydrodynamic environments that makes it ideal for assessing the role of water motion on their growth rate. Here we quantify the growth of L. digitata , as a factor of blade and stipe...
Published in: | Journal of Experimental Marine Biology and Ecology |
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Language: | English |
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2016
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-influence-of-water-motion-on-the-growth-rate-of-the-kelp-laminaria-digitata(c0615e92-3734-4f3e-bc34-deab314fbbb4).html https://doi.org/10.1016/j.jembe.2016.02.006 https://research-repository.st-andrews.ac.uk/bitstream/10023/8355/1/Blight_WaterMotion_JoEMB_E_CC.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/c0615e92-3734-4f3e-bc34-deab314fbbb4 2023-05-15T17:34:31+02:00 The influence of water motion on the growth rate of the kelp Laminaria digitata Kregting, Louise Blight, Andrew J. Elsäßer, Björn Savidge, Graham 2016-05 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-influence-of-water-motion-on-the-growth-rate-of-the-kelp-laminaria-digitata(c0615e92-3734-4f3e-bc34-deab314fbbb4).html https://doi.org/10.1016/j.jembe.2016.02.006 https://research-repository.st-andrews.ac.uk/bitstream/10023/8355/1/Blight_WaterMotion_JoEMB_E_CC.pdf eng eng info:eu-repo/semantics/openAccess Kregting , L , Blight , A J , Elsäßer , B & Savidge , G 2016 , ' The influence of water motion on the growth rate of the kelp Laminaria digitata ' , Journal of Experimental Marine Biology and Ecology , vol. 478 , pp. 86-95 . https://doi.org/10.1016/j.jembe.2016.02.006 Hydrodynamics Light Macroalgae Nutrients Productivity article 2016 ftunstandrewcris https://doi.org/10.1016/j.jembe.2016.02.006 2022-06-02T07:45:40Z The shallow water kelp Laminaria digitata , abundant in coastal zones of the North Atlantic, is exposed to a range of hydrodynamic environments that makes it ideal for assessing the role of water motion on their growth rate. Here we quantify the growth of L. digitata , as a factor of blade and stipe elongation, at sites adjacent to Strangford Lough, Northern Ireland under different hydrodynamic conditions over a one year period. A modelling approach was used to numerically determine both the temporal and spatial variability of the hydrodynamic environment. Ambient seawater nutrient concentrations, temperature and irradiance were measured as well as the internal nutrient status of the L. digitata populations. Kelp populations growing in the greatest and lowest water motion showed the lowest growth rates. Differences observed in growth rate could not be attributed to seawater nutrient availability, temperature or light. The internal nutrient status also suggested no influence on the observed differences in growth rate. Therefore if there are minimal differences in light, temperature and nutrients between sites, then populations of L. digitata exposed to different water motions are likely to exhibit different growth rates. It is suggested that the growth rate differences observed were a function of water motion with the possibility that, in response to the hydrodynamic forces experienced by the algal cells, L. digitata kelps in the high energy environments were putting more energy into strengthening cell walls rather than blade elongation. Article in Journal/Newspaper North Atlantic University of St Andrews: Research Portal Journal of Experimental Marine Biology and Ecology 478 86 95 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Hydrodynamics Light Macroalgae Nutrients Productivity |
spellingShingle |
Hydrodynamics Light Macroalgae Nutrients Productivity Kregting, Louise Blight, Andrew J. Elsäßer, Björn Savidge, Graham The influence of water motion on the growth rate of the kelp Laminaria digitata |
topic_facet |
Hydrodynamics Light Macroalgae Nutrients Productivity |
description |
The shallow water kelp Laminaria digitata , abundant in coastal zones of the North Atlantic, is exposed to a range of hydrodynamic environments that makes it ideal for assessing the role of water motion on their growth rate. Here we quantify the growth of L. digitata , as a factor of blade and stipe elongation, at sites adjacent to Strangford Lough, Northern Ireland under different hydrodynamic conditions over a one year period. A modelling approach was used to numerically determine both the temporal and spatial variability of the hydrodynamic environment. Ambient seawater nutrient concentrations, temperature and irradiance were measured as well as the internal nutrient status of the L. digitata populations. Kelp populations growing in the greatest and lowest water motion showed the lowest growth rates. Differences observed in growth rate could not be attributed to seawater nutrient availability, temperature or light. The internal nutrient status also suggested no influence on the observed differences in growth rate. Therefore if there are minimal differences in light, temperature and nutrients between sites, then populations of L. digitata exposed to different water motions are likely to exhibit different growth rates. It is suggested that the growth rate differences observed were a function of water motion with the possibility that, in response to the hydrodynamic forces experienced by the algal cells, L. digitata kelps in the high energy environments were putting more energy into strengthening cell walls rather than blade elongation. |
format |
Article in Journal/Newspaper |
author |
Kregting, Louise Blight, Andrew J. Elsäßer, Björn Savidge, Graham |
author_facet |
Kregting, Louise Blight, Andrew J. Elsäßer, Björn Savidge, Graham |
author_sort |
Kregting, Louise |
title |
The influence of water motion on the growth rate of the kelp Laminaria digitata |
title_short |
The influence of water motion on the growth rate of the kelp Laminaria digitata |
title_full |
The influence of water motion on the growth rate of the kelp Laminaria digitata |
title_fullStr |
The influence of water motion on the growth rate of the kelp Laminaria digitata |
title_full_unstemmed |
The influence of water motion on the growth rate of the kelp Laminaria digitata |
title_sort |
influence of water motion on the growth rate of the kelp laminaria digitata |
publishDate |
2016 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/the-influence-of-water-motion-on-the-growth-rate-of-the-kelp-laminaria-digitata(c0615e92-3734-4f3e-bc34-deab314fbbb4).html https://doi.org/10.1016/j.jembe.2016.02.006 https://research-repository.st-andrews.ac.uk/bitstream/10023/8355/1/Blight_WaterMotion_JoEMB_E_CC.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Kregting , L , Blight , A J , Elsäßer , B & Savidge , G 2016 , ' The influence of water motion on the growth rate of the kelp Laminaria digitata ' , Journal of Experimental Marine Biology and Ecology , vol. 478 , pp. 86-95 . https://doi.org/10.1016/j.jembe.2016.02.006 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.jembe.2016.02.006 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
478 |
container_start_page |
86 |
op_container_end_page |
95 |
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1766133386866327552 |