Comparison of mechanical properties of four large, wave‐exposed seaweeds
Seaweeds have a simple structural design compared to most terrestrial plants. Nonetheless, some species have adapted to the severe mechanical conditions of the surf zone. The material properties of either tissue sections or the whole stipe of four wave‐exposed seaweeds, Durvillaea antarctica , D. wi...
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crwiley:10.3732/ajb.93.10.1426 2024-05-19T07:31:32+00:00 Comparison of mechanical properties of four large, wave‐exposed seaweeds Harder, Deane L. Hurd, Catriona L. Speck, Thomas Albert-Ludwigs-Universität Freiburg 2006 http://dx.doi.org/10.3732/ajb.93.10.1426 https://onlinelibrary.wiley.com/doi/full/10.3732/ajb.93.10.1426 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Botany volume 93, issue 10, page 1426-1432 ISSN 0002-9122 1537-2197 Plant Science Genetics Ecology, Evolution, Behavior and Systematics journal-article 2006 crwiley https://doi.org/10.3732/ajb.93.10.1426 2024-04-22T07:36:09Z Seaweeds have a simple structural design compared to most terrestrial plants. Nonetheless, some species have adapted to the severe mechanical conditions of the surf zone. The material properties of either tissue sections or the whole stipe of four wave‐exposed seaweeds, Durvillaea antarctica , D. willana , Laminaria digitata , and L. hyperborea , were tested in tension, bending, and torsion. Durvillaea has a very low modulus of elasticity in tension ( E tension = 3–7 MN·m −2 ) and in bending ( E bending = 9–12 MN · m −2 ), torsion modulus ( G = 0.3 MN · m −2 ) and strength (σ b rk = 1–2 MN · m −2 ), combining a compliable and twistable stipe “material” with a comparatively high breaking strain (ε brk = 0.4–0.6). In comparison, the smaller stipes of Laminaria have a higher modulus of elasticity in tension ( E tension = 6–28 MN·m −2 ) and in bending ( E bending = 84–109 MN·m −2 ), similar strength (σ brk = 1–3 MN·m −2 ), and a higher torsion modulus ( G = 0.7–10 MN·m −2 ), combined with a lower breaking strain (ε brk = 0.2–0.3) than Durvillaea . Time‐dependent, viscoelastic reactions were investigated with cycling tests. The tested species dissipated 42–52% of the loading energy in tension through plastic‐viscoelastic processes, a finding that bears important ecological implications. Overall, there seems to be no correlation between single material properties and the size or habitat position of the tested seaweed species. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library American Journal of Botany 93 10 1426 1432 |
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Open Polar |
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Wiley Online Library |
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language |
English |
topic |
Plant Science Genetics Ecology, Evolution, Behavior and Systematics |
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Plant Science Genetics Ecology, Evolution, Behavior and Systematics Harder, Deane L. Hurd, Catriona L. Speck, Thomas Comparison of mechanical properties of four large, wave‐exposed seaweeds |
topic_facet |
Plant Science Genetics Ecology, Evolution, Behavior and Systematics |
description |
Seaweeds have a simple structural design compared to most terrestrial plants. Nonetheless, some species have adapted to the severe mechanical conditions of the surf zone. The material properties of either tissue sections or the whole stipe of four wave‐exposed seaweeds, Durvillaea antarctica , D. willana , Laminaria digitata , and L. hyperborea , were tested in tension, bending, and torsion. Durvillaea has a very low modulus of elasticity in tension ( E tension = 3–7 MN·m −2 ) and in bending ( E bending = 9–12 MN · m −2 ), torsion modulus ( G = 0.3 MN · m −2 ) and strength (σ b rk = 1–2 MN · m −2 ), combining a compliable and twistable stipe “material” with a comparatively high breaking strain (ε brk = 0.4–0.6). In comparison, the smaller stipes of Laminaria have a higher modulus of elasticity in tension ( E tension = 6–28 MN·m −2 ) and in bending ( E bending = 84–109 MN·m −2 ), similar strength (σ brk = 1–3 MN·m −2 ), and a higher torsion modulus ( G = 0.7–10 MN·m −2 ), combined with a lower breaking strain (ε brk = 0.2–0.3) than Durvillaea . Time‐dependent, viscoelastic reactions were investigated with cycling tests. The tested species dissipated 42–52% of the loading energy in tension through plastic‐viscoelastic processes, a finding that bears important ecological implications. Overall, there seems to be no correlation between single material properties and the size or habitat position of the tested seaweed species. |
author2 |
Albert-Ludwigs-Universität Freiburg |
format |
Article in Journal/Newspaper |
author |
Harder, Deane L. Hurd, Catriona L. Speck, Thomas |
author_facet |
Harder, Deane L. Hurd, Catriona L. Speck, Thomas |
author_sort |
Harder, Deane L. |
title |
Comparison of mechanical properties of four large, wave‐exposed seaweeds |
title_short |
Comparison of mechanical properties of four large, wave‐exposed seaweeds |
title_full |
Comparison of mechanical properties of four large, wave‐exposed seaweeds |
title_fullStr |
Comparison of mechanical properties of four large, wave‐exposed seaweeds |
title_full_unstemmed |
Comparison of mechanical properties of four large, wave‐exposed seaweeds |
title_sort |
comparison of mechanical properties of four large, wave‐exposed seaweeds |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.3732/ajb.93.10.1426 https://onlinelibrary.wiley.com/doi/full/10.3732/ajb.93.10.1426 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
American Journal of Botany volume 93, issue 10, page 1426-1432 ISSN 0002-9122 1537-2197 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.3732/ajb.93.10.1426 |
container_title |
American Journal of Botany |
container_volume |
93 |
container_issue |
10 |
container_start_page |
1426 |
op_container_end_page |
1432 |
_version_ |
1799469394191974400 |