Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments
- Autores
- Pan, Jerónimo; Cuadrado, Diana G.; Bournod, Constanza N.
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión enviada
- Descripción
- Modern microbial mats and biofilms play a paramount role in sediment biostabilization. When sporadic storms affect tidal flats of Bahía Blanca Estuary, the underlying siliciclastic sediment is exposed by physical disruption of the mat, and in a few weeks’ lapse, a microbial community re-establishes. With the objective of studying colonization patterns and the ecological succession of microorganisms at the scale of these erosional structures, these were experimentally-made and their biological recolonization followed for 8 wk, with replication in winter and spring. Motile pennate diatoms led the initial colonization following two distinct patterns: a dominance by Cylindrotheca closterium in winter; and by naviculoid and nitzschioid diatoms in spring. During the first 7 d, cell numbers increased 2-17-fold. Cell densities further increased exhibiting sigmoidal community growth, reaching 2.9-8.9 × 106 cells cm-3 maxima around d-30; centric diatoms maintained low densities throughout. In the 56 d after removal of the original mat, filamentous cyanobacteria that dominates mature mats did not establish a significant biomass, leading to the rejection of the hypothesis that cyanobacteria would drive the colonization. The observed dominance of pennate diatoms is attributed to extrinsic factors determined by tidal flooding; and intrinsic ones, e.g. motility, nutrient affinity, and high growth rate.
- Materia
-
Geología
biological sediment colonization
diatoms
ecological succession
filamentous cyanobacteria
microbial mats
microphytobenthos - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-nd/4.0/
- Repositorio
- Institución
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
- OAI Identificador
- oai:digital.cic.gba.gob.ar:11746/8170
Ver los metadatos del registro completo
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oai:digital.cic.gba.gob.ar:11746/8170 |
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9441 |
network_name_str |
CIC Digital (CICBA) |
spelling |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sedimentsPan, JerónimoCuadrado, Diana G.Bournod, Constanza N.Geologíabiological sediment colonizationdiatomsecological successionfilamentous cyanobacteriamicrobial matsmicrophytobenthosModern microbial mats and biofilms play a paramount role in sediment biostabilization. When sporadic storms affect tidal flats of Bahía Blanca Estuary, the underlying siliciclastic sediment is exposed by physical disruption of the mat, and in a few weeks’ lapse, a microbial community re-establishes. With the objective of studying colonization patterns and the ecological succession of microorganisms at the scale of these erosional structures, these were experimentally-made and their biological recolonization followed for 8 wk, with replication in winter and spring. Motile pennate diatoms led the initial colonization following two distinct patterns: a dominance by Cylindrotheca closterium in winter; and by naviculoid and nitzschioid diatoms in spring. During the first 7 d, cell numbers increased 2-17-fold. Cell densities further increased exhibiting sigmoidal community growth, reaching 2.9-8.9 × 106 cells cm-3 maxima around d-30; centric diatoms maintained low densities throughout. In the 56 d after removal of the original mat, filamentous cyanobacteria that dominates mature mats did not establish a significant biomass, leading to the rejection of the hypothesis that cyanobacteria would drive the colonization. The observed dominance of pennate diatoms is attributed to extrinsic factors determined by tidal flooding; and intrinsic ones, e.g. motility, nutrient affinity, and high growth rate.Oxford University Press2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/8170enginfo:eu-repo/semantics/altIdentifier/doi/10.1093/femsec/fix111info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:40:16Zoai:digital.cic.gba.gob.ar:11746/8170Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:40:17.093CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse |
dc.title.none.fl_str_mv |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments |
title |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments |
spellingShingle |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments Pan, Jerónimo Geología biological sediment colonization diatoms ecological succession filamentous cyanobacteria microbial mats microphytobenthos |
title_short |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments |
title_full |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments |
title_fullStr |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments |
title_full_unstemmed |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments |
title_sort |
Diatom-driven recolonization of microbial mat-dominated siliciclastic tidal flat sediments |
dc.creator.none.fl_str_mv |
Pan, Jerónimo Cuadrado, Diana G. Bournod, Constanza N. |
author |
Pan, Jerónimo |
author_facet |
Pan, Jerónimo Cuadrado, Diana G. Bournod, Constanza N. |
author_role |
author |
author2 |
Cuadrado, Diana G. Bournod, Constanza N. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Geología biological sediment colonization diatoms ecological succession filamentous cyanobacteria microbial mats microphytobenthos |
topic |
Geología biological sediment colonization diatoms ecological succession filamentous cyanobacteria microbial mats microphytobenthos |
dc.description.none.fl_txt_mv |
Modern microbial mats and biofilms play a paramount role in sediment biostabilization. When sporadic storms affect tidal flats of Bahía Blanca Estuary, the underlying siliciclastic sediment is exposed by physical disruption of the mat, and in a few weeks’ lapse, a microbial community re-establishes. With the objective of studying colonization patterns and the ecological succession of microorganisms at the scale of these erosional structures, these were experimentally-made and their biological recolonization followed for 8 wk, with replication in winter and spring. Motile pennate diatoms led the initial colonization following two distinct patterns: a dominance by Cylindrotheca closterium in winter; and by naviculoid and nitzschioid diatoms in spring. During the first 7 d, cell numbers increased 2-17-fold. Cell densities further increased exhibiting sigmoidal community growth, reaching 2.9-8.9 × 106 cells cm-3 maxima around d-30; centric diatoms maintained low densities throughout. In the 56 d after removal of the original mat, filamentous cyanobacteria that dominates mature mats did not establish a significant biomass, leading to the rejection of the hypothesis that cyanobacteria would drive the colonization. The observed dominance of pennate diatoms is attributed to extrinsic factors determined by tidal flooding; and intrinsic ones, e.g. motility, nutrient affinity, and high growth rate. |
description |
Modern microbial mats and biofilms play a paramount role in sediment biostabilization. When sporadic storms affect tidal flats of Bahía Blanca Estuary, the underlying siliciclastic sediment is exposed by physical disruption of the mat, and in a few weeks’ lapse, a microbial community re-establishes. With the objective of studying colonization patterns and the ecological succession of microorganisms at the scale of these erosional structures, these were experimentally-made and their biological recolonization followed for 8 wk, with replication in winter and spring. Motile pennate diatoms led the initial colonization following two distinct patterns: a dominance by Cylindrotheca closterium in winter; and by naviculoid and nitzschioid diatoms in spring. During the first 7 d, cell numbers increased 2-17-fold. Cell densities further increased exhibiting sigmoidal community growth, reaching 2.9-8.9 × 106 cells cm-3 maxima around d-30; centric diatoms maintained low densities throughout. In the 56 d after removal of the original mat, filamentous cyanobacteria that dominates mature mats did not establish a significant biomass, leading to the rejection of the hypothesis that cyanobacteria would drive the colonization. The observed dominance of pennate diatoms is attributed to extrinsic factors determined by tidal flooding; and intrinsic ones, e.g. motility, nutrient affinity, and high growth rate. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
submittedVersion |
dc.identifier.none.fl_str_mv |
https://digital.cic.gba.gob.ar/handle/11746/8170 |
url |
https://digital.cic.gba.gob.ar/handle/11746/8170 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/femsec/fix111 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Oxford University Press |
publisher.none.fl_str_mv |
Oxford University Press |
dc.source.none.fl_str_mv |
reponame:CIC Digital (CICBA) instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires instacron:CICBA |
reponame_str |
CIC Digital (CICBA) |
collection |
CIC Digital (CICBA) |
instname_str |
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
instacron_str |
CICBA |
institution |
CICBA |
repository.name.fl_str_mv |
CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires |
repository.mail.fl_str_mv |
marisa.degiusti@sedici.unlp.edu.ar |
_version_ |
1844618613768585216 |
score |
13.070432 |