A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem

A dense winter bloom of the dinoflagellate Heterocapsa triquetra was observed at a fixed station (44 degrees 35.3'S; 72 degrees 43.6'W) in the Puyuhuapi Fjord in Chilean Patagonia during July 2015. H. triquetra dominated the phytoplankton community in the surface waters between 2 and 15 m...

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Detalles Bibliográficos
Autores: Montero, P, Pérez-Santos, I, Daneri-Hermosilla, Giovanni, Gutierrez, MH, Igor, G, Seguel, R, Purdie, D, Crawford, DW
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:Chile
Idioma:inglés
OAI Identifier:oai:repositorio.anid.cl:10533/220707
Acceso en línea:https://hdl.handle.net/10533/220707
Access Level:acceso abierto
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dc.title.es_CL.fl_str_mv A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
dc.title.journal.es_CL.fl_str_mv Estuarine Coastal And Shelf Science
title A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
spellingShingle A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
Montero, P
title_short A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
title_full A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
title_fullStr A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
title_full_unstemmed A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
title_sort A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystem
dc.creator.none.fl_str_mv Montero, P
Pérez-Santos, I
Daneri-Hermosilla, Giovanni
Gutierrez, MH
Igor, G
Seguel, R
Purdie, D
Crawford, DW
author Montero, P
author_facet Montero, P
Pérez-Santos, I
Daneri-Hermosilla, Giovanni
Gutierrez, MH
Igor, G
Seguel, R
Purdie, D
Crawford, DW
author_role author
author2 Pérez-Santos, I
Daneri-Hermosilla, Giovanni
Gutierrez, MH
Igor, G
Seguel, R
Purdie, D
Crawford, DW
author2_role author
author
author
author
author
author
author
description A dense winter bloom of the dinoflagellate Heterocapsa triquetra was observed at a fixed station (44 degrees 35.3'S; 72 degrees 43.6'W) in the Puyuhuapi Fjord in Chilean Patagonia during July 2015. H. triquetra dominated the phytoplankton community in the surface waters between 2 and 15 m (13-58 x 10(9) cell m(-2)), with abundances some 3 to 15 times higher than the total abundance of the diatom assemblage, which was dominated by Skeletonema spp. The high abundance of dinoflagellates was reflected in high rates of gross primary production (GPP; 0.6-1.6 g C m(-2) d(-1)) and chlorophyll-a concentration (Chl-a; 70 -199.2 mg m(-2)) that are comparable to levels reported in spring diatom blooms in similar Patagonian fjords. We identify the main forcing factors behind a pulse of organic matter production during the nonproductive winter season, and test the hypothesis that low irradiance levels are a key factor limiting phytoplankton blooms and subsequent productivity during winter. Principal Component Analysis (PCA) indicated that GPP rates were significantly correlated (r = -0.8, p < 0.05) with a decrease in salinity/temperature and the presence of the Heterocapsa bloom. The bloom occurred under low surface irradiance levels characteristic of austral winter and was accompanied by strong northern winds, associated with the passage of a low-pressure system, and a water column dominated by double diffusive layering. To our knowledge, this is the first report of a dense dinoflagellate bloom during deep austral winter in a Patagonian fjord, and our data challenge the paradigm of light limitation as a factor controlling phytoplankton blooms in this region in winter. (C) 2017 Elsevier Ltd. All rights reserved. Keywords. Author Keywords:Primary production; Mixing; Winter dinoflagellate blooms; Patagonian fjord
publishDate 2017
dc.date.issued.es_CL.fl_str_mv 2017
dc.date.accessioned.none.fl_str_mv 2018-09-28T18:13:07Z
2022-07-07T15:16:31Z
dc.date.available.none.fl_str_mv 2018-09-28T18:13:07Z
2022-07-07T15:16:31Z
dc.type.none.fl_str_mv Articulo
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dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/220707
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dc.language.iso.none.fl_str_mv eng
language eng
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dc.relation.doi.es_CL.fl_str_mv 10.1016/j.ecss.2017.09.027
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spelling Crawford, DWPurdie, DSeguel, RIgor, GGutierrez, MHDaneri-Hermosilla, GiovanniPérez-Santos, IMontero, P201710.1016/j.ecss.2017.09.027https://hdl.handle.net/10533/220707http://purl.org/coar/access_right/c_abf2A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystemMontero, PPérez-Santos, IDaneri-Hermosilla, GiovanniGutierrez, MHIgor, GSeguel, RPurdie, DCrawford, DW2018-09-28T18:13:07Z2022-07-07T15:16:31Z2018-09-28T18:13:07Z2022-07-07T15:16:31Z2017A dense winter bloom of the dinoflagellate Heterocapsa triquetra was observed at a fixed station (44 degrees 35.3'S; 72 degrees 43.6'W) in the Puyuhuapi Fjord in Chilean Patagonia during July 2015. H. triquetra dominated the phytoplankton community in the surface waters between 2 and 15 m (13-58 x 10(9) cell m(-2)), with abundances some 3 to 15 times higher than the total abundance of the diatom assemblage, which was dominated by Skeletonema spp. The high abundance of dinoflagellates was reflected in high rates of gross primary production (GPP; 0.6-1.6 g C m(-2) d(-1)) and chlorophyll-a concentration (Chl-a; 70 -199.2 mg m(-2)) that are comparable to levels reported in spring diatom blooms in similar Patagonian fjords. We identify the main forcing factors behind a pulse of organic matter production during the nonproductive winter season, and test the hypothesis that low irradiance levels are a key factor limiting phytoplankton blooms and subsequent productivity during winter. Principal Component Analysis (PCA) indicated that GPP rates were significantly correlated (r = -0.8, p < 0.05) with a decrease in salinity/temperature and the presence of the Heterocapsa bloom. The bloom occurred under low surface irradiance levels characteristic of austral winter and was accompanied by strong northern winds, associated with the passage of a low-pressure system, and a water column dominated by double diffusive layering. To our knowledge, this is the first report of a dense dinoflagellate bloom during deep austral winter in a Patagonian fjord, and our data challenge the paradigm of light limitation as a factor controlling phytoplankton blooms in this region in winter. (C) 2017 Elsevier Ltd. All rights reserved. Keywords. Author Keywords:Primary production; Mixing; Winter dinoflagellate blooms; Patagonian fjord11310631131063virtual::47069-1WOS:000415776100010https://hdl.handle.net/10533/220707enginstname: Conicytreponame: Repositorio Digital RI2.010.1016/j.ecss.2017.09.027info:eu-repo/grantAgreement//1131063info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477https://www.deepdyve.com/lp/elsevier/a-winter-dinoflagellate-bloom-drives-high-rates-of-primary-production-90LCPql4jy?impressionId=5a6ba8f89ae1e&i_medium=docview&i_campaign=recommendations&i_source=recommendationsinfo:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivs 3.0 Chilehttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/A winter dinoflagellate bloom drives high rates of primary production in a Patagonian fjord ecosystemEstuarine Coastal And Shelf ScienceArticuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttps://hdl.handle.net/10533/220707http://purl.org/coar/resource_type/c_2df8fbb176daf450-9d1c-4407-a66c-f69e4f016778virtual::47069-176daf450-9d1c-4407-a66c-f69e4f016778virtual::47069-1CC-LICENSElicense_rdfapplication/octet-stream1232https://repositorio.anid.cl/bitstreams/ed466c44-48f0-4595-a47e-fc5f298d44df/downloadf97bcfdf58f3e17b5cec231112dab5b1MD51LICENSElicense.txttext/plain1779https://repositorio.anid.cl/bitstreams/7f5f8d2f-2998-4058-ab6e-11480974b139/download593a6e7305c66c56041a9f9e15a649c1MD5210533/220707oai:repositorio.anid.cl:10533/2207072023-07-24 18:19:22.045http://creativecommons.org/licenses/by-nc-nd/3.0/cl/info:eu-repo/semantics/openAccesshttps://repositorio.anid.clRepositorio ANIDaletelier@anid.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