Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment
The ability of propagules (fertilized eggs) of five species of fucoid algae (Hormosira banksii, Durvillaea antarctica, Cystophora torulosa from New Zealand, and Fucus gardneri and Pelvetiopsis limitata from Oregon, U.S.A.) to settle and attach was tested in a turbulent, stirred tank. The time taken...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.596.9905 2023-05-15T13:39:50+02:00 Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment David Taylor Sebastien Delaux B Craig Stevens B Roger Nokes David Schiela The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.9905 http://www.aslo.org/lo/toc/vol_55/issue_1/0066.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.9905 http://www.aslo.org/lo/toc/vol_55/issue_1/0066.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_55/issue_1/0066.pdf text ftciteseerx 2016-01-08T13:46:58Z The ability of propagules (fertilized eggs) of five species of fucoid algae (Hormosira banksii, Durvillaea antarctica, Cystophora torulosa from New Zealand, and Fucus gardneri and Pelvetiopsis limitata from Oregon, U.S.A.) to settle and attach was tested in a turbulent, stirred tank. The time taken to reach a steady state of settlement numbers varied between species and turbulence intensities. Normalized steady-state (NSS) settlement numbers showed differences among species. A settlement model, based on principles invoked in the analysis of motion of bed sediments in rivers, was developed. The model indicates that the NSS settlement number depends on two parameters, a propagule Reynolds number and an entrainment function that represents the relative importance of the shear stress experienced by settled propagules and their submerged weight. The inability of this model to collapse the data for all species suggests that the stickiness of the propagules, due to their mucus coatings, plays a significant role in the settlement process. P. limitata (largest propagules) exhibited the least effective attachment to the substratum, whereas F. gardneri (second largest) and D. antarctica (smallest propagules) were the most effective at withstanding hydrodynamic forces that detach propagules. We also model the boundary layer above a flat-bed, driven by linear water-waves, using a skin-friction drag coefficient and show that this study represents the lower end of the shear velocity u Text Antarc* Antarctica Unknown New Zealand |
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English |
description |
The ability of propagules (fertilized eggs) of five species of fucoid algae (Hormosira banksii, Durvillaea antarctica, Cystophora torulosa from New Zealand, and Fucus gardneri and Pelvetiopsis limitata from Oregon, U.S.A.) to settle and attach was tested in a turbulent, stirred tank. The time taken to reach a steady state of settlement numbers varied between species and turbulence intensities. Normalized steady-state (NSS) settlement numbers showed differences among species. A settlement model, based on principles invoked in the analysis of motion of bed sediments in rivers, was developed. The model indicates that the NSS settlement number depends on two parameters, a propagule Reynolds number and an entrainment function that represents the relative importance of the shear stress experienced by settled propagules and their submerged weight. The inability of this model to collapse the data for all species suggests that the stickiness of the propagules, due to their mucus coatings, plays a significant role in the settlement process. P. limitata (largest propagules) exhibited the least effective attachment to the substratum, whereas F. gardneri (second largest) and D. antarctica (smallest propagules) were the most effective at withstanding hydrodynamic forces that detach propagules. We also model the boundary layer above a flat-bed, driven by linear water-waves, using a skin-friction drag coefficient and show that this study represents the lower end of the shear velocity u |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
David Taylor Sebastien Delaux B Craig Stevens B Roger Nokes David Schiela |
spellingShingle |
David Taylor Sebastien Delaux B Craig Stevens B Roger Nokes David Schiela Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment |
author_facet |
David Taylor Sebastien Delaux B Craig Stevens B Roger Nokes David Schiela |
author_sort |
David Taylor |
title |
Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment |
title_short |
Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment |
title_full |
Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment |
title_fullStr |
Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment |
title_full_unstemmed |
Settlement rates of macroalgal propagules: Cross-species comparisons in a turbulent environment |
title_sort |
settlement rates of macroalgal propagules: cross-species comparisons in a turbulent environment |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.9905 http://www.aslo.org/lo/toc/vol_55/issue_1/0066.pdf |
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New Zealand |
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New Zealand |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
http://www.aslo.org/lo/toc/vol_55/issue_1/0066.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.9905 http://www.aslo.org/lo/toc/vol_55/issue_1/0066.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766125377034387456 |