Gas-floating aggregates of Antarctic benthic diatoms
We report the formation of gas-vesicle stalked aggregates formed by a mucoid-sediment layer colonized by pennate diatoms and occasional centric diatoms. The most frequently occurring diatoms within this layer belonged to Pleurosigma sp., with less abundance in the stalk. Aggregates stayed attached t...
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ftconicet:oai:ri.conicet.gov.ar:11336/57030 2023-10-09T21:45:13+02:00 Gas-floating aggregates of Antarctic benthic diatoms Alurralde, Roque Gastón Campana, Gabriela Laura application/pdf http://hdl.handle.net/11336/57030 eng eng Matters Select info:eu-repo/semantics/altIdentifier/doi/10.19185/matters.201703000008 info:eu-repo/semantics/altIdentifier/url/https://sciencematters.io/articles/201703000008 http://hdl.handle.net/11336/57030 Alurralde, Roque Gastón; Campana, Gabriela Laura; Gas-floating aggregates of Antarctic benthic diatoms; Matters Select; Matters Select; 12-2017 2297-9239 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTICA BENTHIC DIATOMS GAS-FLOATING COLONIES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.19185/matters.201703000008 2023-09-24T18:25:25Z We report the formation of gas-vesicle stalked aggregates formed by a mucoid-sediment layer colonized by pennate diatoms and occasional centric diatoms. The most frequently occurring diatoms within this layer belonged to Pleurosigma sp., with less abundance in the stalk. Aggregates stayed attached to the sediment up to ten days until the buoyant force was sufficient to release them from the bottom. The structures were observed twice, in outdoor tanks (250 L) containing marine sediments in filtered seawater under natural light cycle and ambient temperature (-1.3 to 0.6 ºC), after 15 days. Whether this mechanism occurs in the field awaits elucidation. However, it stands out as a pathway for benthic diatom dispersion, resuspension and benthic-pelagic coupling for Antarctic coastal systems. Fil: Alurralde, Roque Gastón. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina Fil: Campana, Gabriela Laura. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Article in Journal/Newspaper Antarc* Antarctic Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Argentino Argentina Matters Select |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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language |
English |
topic |
ANTARCTICA BENTHIC DIATOMS GAS-FLOATING COLONIES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTICA BENTHIC DIATOMS GAS-FLOATING COLONIES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Alurralde, Roque Gastón Campana, Gabriela Laura Gas-floating aggregates of Antarctic benthic diatoms |
topic_facet |
ANTARCTICA BENTHIC DIATOMS GAS-FLOATING COLONIES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
We report the formation of gas-vesicle stalked aggregates formed by a mucoid-sediment layer colonized by pennate diatoms and occasional centric diatoms. The most frequently occurring diatoms within this layer belonged to Pleurosigma sp., with less abundance in the stalk. Aggregates stayed attached to the sediment up to ten days until the buoyant force was sufficient to release them from the bottom. The structures were observed twice, in outdoor tanks (250 L) containing marine sediments in filtered seawater under natural light cycle and ambient temperature (-1.3 to 0.6 ºC), after 15 days. Whether this mechanism occurs in the field awaits elucidation. However, it stands out as a pathway for benthic diatom dispersion, resuspension and benthic-pelagic coupling for Antarctic coastal systems. Fil: Alurralde, Roque Gastón. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina Fil: Campana, Gabriela Laura. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina |
format |
Article in Journal/Newspaper |
author |
Alurralde, Roque Gastón Campana, Gabriela Laura |
author_facet |
Alurralde, Roque Gastón Campana, Gabriela Laura |
author_sort |
Alurralde, Roque Gastón |
title |
Gas-floating aggregates of Antarctic benthic diatoms |
title_short |
Gas-floating aggregates of Antarctic benthic diatoms |
title_full |
Gas-floating aggregates of Antarctic benthic diatoms |
title_fullStr |
Gas-floating aggregates of Antarctic benthic diatoms |
title_full_unstemmed |
Gas-floating aggregates of Antarctic benthic diatoms |
title_sort |
gas-floating aggregates of antarctic benthic diatoms |
publisher |
Matters Select |
url |
http://hdl.handle.net/11336/57030 |
geographic |
Antarctic Argentino Argentina |
geographic_facet |
Antarctic Argentino Argentina |
genre |
Antarc* Antarctic Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino |
genre_facet |
Antarc* Antarctic Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.19185/matters.201703000008 info:eu-repo/semantics/altIdentifier/url/https://sciencematters.io/articles/201703000008 http://hdl.handle.net/11336/57030 Alurralde, Roque Gastón; Campana, Gabriela Laura; Gas-floating aggregates of Antarctic benthic diatoms; Matters Select; Matters Select; 12-2017 2297-9239 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.19185/matters.201703000008 |
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Matters Select |
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1779316761837961216 |