Gas-floating aggregates of Antarctic benthic diatoms

Autores
Alurralde, Roque Gastón; Campana, Gabriela Laura
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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
Materia
ANTARCTICA
BENTHIC DIATOMS
GAS-FLOATING COLONIES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/57030
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Gas-floating aggregates of Antarctic benthic diatomsAlurralde, Roque GastónCampana, Gabriela LauraANTARCTICABENTHIC DIATOMSGAS-FLOATING COLONIEShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We 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; ArgentinaFil: Campana, Gabriela Laura. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaMatters Select2017-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/57030Alurralde, Roque Gastón; Campana, Gabriela Laura; Gas-floating aggregates of Antarctic benthic diatoms; Matters Select; Matters Select; 12-20172297-9239CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.19185/matters.201703000008info:eu-repo/semantics/altIdentifier/url/https://sciencematters.io/articles/201703000008info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:08Zoai:ri.conicet.gov.ar:11336/57030instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:36:08.708CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Gas-floating aggregates of Antarctic benthic diatoms
title Gas-floating aggregates of Antarctic benthic diatoms
spellingShingle Gas-floating aggregates of Antarctic benthic diatoms
Alurralde, Roque Gastón
ANTARCTICA
BENTHIC DIATOMS
GAS-FLOATING COLONIES
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
dc.creator.none.fl_str_mv Alurralde, Roque Gastón
Campana, Gabriela Laura
author Alurralde, Roque Gastón
author_facet Alurralde, Roque Gastón
Campana, Gabriela Laura
author_role author
author2 Campana, Gabriela Laura
author2_role author
dc.subject.none.fl_str_mv ANTARCTICA
BENTHIC DIATOMS
GAS-FLOATING COLONIES
topic ANTARCTICA
BENTHIC DIATOMS
GAS-FLOATING COLONIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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
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.
publishDate 2017
dc.date.none.fl_str_mv 2017-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 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
url http://hdl.handle.net/11336/57030
identifier_str_mv Alurralde, Roque Gastón; Campana, Gabriela Laura; Gas-floating aggregates of Antarctic benthic diatoms; Matters Select; Matters Select; 12-2017
2297-9239
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.19185/matters.201703000008
info:eu-repo/semantics/altIdentifier/url/https://sciencematters.io/articles/201703000008
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Matters Select
publisher.none.fl_str_mv Matters Select
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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