Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity
Current knowledge about the performance of floating seaweeds as dispersal vectors comes mostly from mid latitudes (30°–40°), but phylogeographic studies suggest that long-distance dispersal (LDD) is more common at high latitudes (50°–60°). To test this hypothesis, long-term field experiments with fl...
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Online Access: | https://doi.org/10.1016/j.marenvres.2019.05.013 https://repositorio.uchile.cl/handle/2250/172596 |
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ftunivchile:oai:repositorio.uchile.cl:2250/172596 2023-05-15T13:56:31+02:00 Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity Tala, Fadia López, Boris A. Velásquez, Marcel Jeldres, Ricardo Macaya, Erasmo C. Mansilla, Andrés Ojeda, Jaime Thiel, Martin 2019 application/pdf https://doi.org/10.1016/j.marenvres.2019.05.013 https://repositorio.uchile.cl/handle/2250/172596 en eng Elsevier Ltd Marine Environmental Research, Volumen 149, 18790291 01411136 doi:10.1016/j.marenvres.2019.05.013 https://repositorio.uchile.cl/handle/2250/172596 Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND Marine Environmental Research Chile Dispersal Durvillaea antarctica Floating persistence Floating seaweeds Rafting Temperature Artículo de revista 2019 ftunivchile https://doi.org/10.1016/j.marenvres.2019.05.013 2023-01-22T01:03:45Z Current knowledge about the performance of floating seaweeds as dispersal vectors comes mostly from mid latitudes (30°–40°), but phylogeographic studies suggest that long-distance dispersal (LDD) is more common at high latitudes (50°–60°). To test this hypothesis, long-term field experiments with floating southern bull kelp Durvillaea antarctica were conducted along a latitudinal gradient (30°S, 37°S and 54°S) in austral winter and summer. Floating time exceeded 200d in winter at the high latitudes but in summer it dropped to 90d, being still higher than at low latitudes (<45d). Biomass variations were due to loss of buoyant fronds. Reproductive activity diminished during long floating times. Physiological changes included mainly a reduction in photosynthetic (Fv/Fm and pigments) rather than in defence variables (phlorotannins and antioxidant activity). The observed long floating persistence and long-term acclimation responses at 54°S support the hypothesis of LDD by kelp rafts at high latitudes. Article in Journal/Newspaper Antarc* Antarctica Universidad de Chile: Repositorio académico Austral Pacific Marine Environmental Research 149 67 79 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Chile Dispersal Durvillaea antarctica Floating persistence Floating seaweeds Rafting Temperature |
spellingShingle |
Chile Dispersal Durvillaea antarctica Floating persistence Floating seaweeds Rafting Temperature Tala, Fadia López, Boris A. Velásquez, Marcel Jeldres, Ricardo Macaya, Erasmo C. Mansilla, Andrés Ojeda, Jaime Thiel, Martin Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity |
topic_facet |
Chile Dispersal Durvillaea antarctica Floating persistence Floating seaweeds Rafting Temperature |
description |
Current knowledge about the performance of floating seaweeds as dispersal vectors comes mostly from mid latitudes (30°–40°), but phylogeographic studies suggest that long-distance dispersal (LDD) is more common at high latitudes (50°–60°). To test this hypothesis, long-term field experiments with floating southern bull kelp Durvillaea antarctica were conducted along a latitudinal gradient (30°S, 37°S and 54°S) in austral winter and summer. Floating time exceeded 200d in winter at the high latitudes but in summer it dropped to 90d, being still higher than at low latitudes (<45d). Biomass variations were due to loss of buoyant fronds. Reproductive activity diminished during long floating times. Physiological changes included mainly a reduction in photosynthetic (Fv/Fm and pigments) rather than in defence variables (phlorotannins and antioxidant activity). The observed long floating persistence and long-term acclimation responses at 54°S support the hypothesis of LDD by kelp rafts at high latitudes. |
format |
Article in Journal/Newspaper |
author |
Tala, Fadia López, Boris A. Velásquez, Marcel Jeldres, Ricardo Macaya, Erasmo C. Mansilla, Andrés Ojeda, Jaime Thiel, Martin |
author_facet |
Tala, Fadia López, Boris A. Velásquez, Marcel Jeldres, Ricardo Macaya, Erasmo C. Mansilla, Andrés Ojeda, Jaime Thiel, Martin |
author_sort |
Tala, Fadia |
title |
Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity |
title_short |
Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity |
title_full |
Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity |
title_fullStr |
Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity |
title_full_unstemmed |
Long-term persistence of the floating bull kelp Durvillaea antarctica from the South-East Pacific: Potential contribution to local and transoceanic connectivity |
title_sort |
long-term persistence of the floating bull kelp durvillaea antarctica from the south-east pacific: potential contribution to local and transoceanic connectivity |
publisher |
Elsevier Ltd |
publishDate |
2019 |
url |
https://doi.org/10.1016/j.marenvres.2019.05.013 https://repositorio.uchile.cl/handle/2250/172596 |
geographic |
Austral Pacific |
geographic_facet |
Austral Pacific |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Marine Environmental Research |
op_relation |
Marine Environmental Research, Volumen 149, 18790291 01411136 doi:10.1016/j.marenvres.2019.05.013 https://repositorio.uchile.cl/handle/2250/172596 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.marenvres.2019.05.013 |
container_title |
Marine Environmental Research |
container_volume |
149 |
container_start_page |
67 |
op_container_end_page |
79 |
_version_ |
1766264020975747072 |