Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean
13 pages, 7 figures, 2 tables, supplementary data https://doi.org/10.1016/j.scitotenv.2019.06.524 Transparent exopolymer particles (TEP) are an abundant class of suspended organic particles, mainly formed by polysaccharides, which play important roles in biogeochemical and ecological processes in th...
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ftcsic:oai:digital.csic.es:10261/195124 2024-02-11T09:58:42+01:00 Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean Zamanillo Campos, Marina Ortega-Retuerta, E. Nunes, Sdena Estrada, Marta Sala, M. Montserrat Royer, S.-J. López-Sandoval, Daffne Emelianov, Mikhail Vaqué, Dolors Marrasé, Cèlia Simó, Rafel Ministerio de Educación y Cultura (España) Ministerio de Economía y Competitividad (España) 2019-11 http://hdl.handle.net/10261/195124 https://doi.org/10.1016/j.scitotenv.2019.06.524 https://doi.org/10.13039/501100003329 unknown Elsevier #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2016-81008-R Preprint https://doi.org/10.1016/j.scitotenv.2019.06.524 Sí doi:10.1016/j.scitotenv.2019.06.524 issn: 0048-9697 e-issn: 1879-1026 Science of the Total Environment 691: 736-748 (2019) http://hdl.handle.net/10261/195124 http://dx.doi.org/10.13039/501100003329 open Transparent exopolymer particles Phytoplankton Prokaryotes Solar radiation dose Southern Ocean artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.1016/j.scitotenv.2019.06.52410.13039/501100003329 2024-01-16T10:45:46Z 13 pages, 7 figures, 2 tables, supplementary data https://doi.org/10.1016/j.scitotenv.2019.06.524 Transparent exopolymer particles (TEP) are an abundant class of suspended organic particles, mainly formed by polysaccharides, which play important roles in biogeochemical and ecological processes in the ocean. In this study we investigated horizontal and vertical TEP distributions (within the euphotic layer, including the upper surface) and their short-term variability along with a suite of environmental and biological variables in four distinct regions of the Southern Ocean. TEP concentrations in the surface (4 m) averaged 102.3 ± 40.4 μg XG eq. L and typically decreased with depth. Chlorophyll a (Chl a) concentration was a better predictor of TEP variability across the horizontal (R = 0.66, p < 0.001) and vertical (R = 0.74, p < 0.001) scales than prokaryotic heterotrophic abundance and production. Incubation experiments further confirmed the main role of phytoplankton as TEP producers. The highest surface TEP concentrations were found north of the South Orkney Islands (144.4 ± 21.7 μg XG eq. L), where the phytoplankton was dominated by cryptophytes and haptophytes; however, the highest TEP:Chl a ratios were found south of these islands (153.4 ± 29.8 μg XG eq (μg Chl a), compared to a mean of 79.3 ± 54.9 μg XG eq (μg Chl a) in the whole cruise, in association with haptophyte dominance, proximity of sea ice and high exposure to solar radiation. TEP were generally enriched in the upper surface (10 cm) respect to 4 m, despite a lack of biomass enrichment, suggesting either upward transport by positive buoyancy or bubble scavenging, or higher production at the upper surface by light stress or aggregation. TEP concentrations did not present any significant cyclic diel pattern. Altogether, our results suggest that photobiological stress, sea ice melt and turbulence add to phytoplankton productivity in driving TEP distribution across the Antarctic Peninsula area and Atlantic sector of the Southern Ocean This ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice South Orkney Islands Southern Ocean Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Peninsula South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Southern Ocean The Antarctic Science of The Total Environment 691 736 748 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Transparent exopolymer particles Phytoplankton Prokaryotes Solar radiation dose Southern Ocean |
spellingShingle |
Transparent exopolymer particles Phytoplankton Prokaryotes Solar radiation dose Southern Ocean Zamanillo Campos, Marina Ortega-Retuerta, E. Nunes, Sdena Estrada, Marta Sala, M. Montserrat Royer, S.-J. López-Sandoval, Daffne Emelianov, Mikhail Vaqué, Dolors Marrasé, Cèlia Simó, Rafel Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean |
topic_facet |
Transparent exopolymer particles Phytoplankton Prokaryotes Solar radiation dose Southern Ocean |
description |
13 pages, 7 figures, 2 tables, supplementary data https://doi.org/10.1016/j.scitotenv.2019.06.524 Transparent exopolymer particles (TEP) are an abundant class of suspended organic particles, mainly formed by polysaccharides, which play important roles in biogeochemical and ecological processes in the ocean. In this study we investigated horizontal and vertical TEP distributions (within the euphotic layer, including the upper surface) and their short-term variability along with a suite of environmental and biological variables in four distinct regions of the Southern Ocean. TEP concentrations in the surface (4 m) averaged 102.3 ± 40.4 μg XG eq. L and typically decreased with depth. Chlorophyll a (Chl a) concentration was a better predictor of TEP variability across the horizontal (R = 0.66, p < 0.001) and vertical (R = 0.74, p < 0.001) scales than prokaryotic heterotrophic abundance and production. Incubation experiments further confirmed the main role of phytoplankton as TEP producers. The highest surface TEP concentrations were found north of the South Orkney Islands (144.4 ± 21.7 μg XG eq. L), where the phytoplankton was dominated by cryptophytes and haptophytes; however, the highest TEP:Chl a ratios were found south of these islands (153.4 ± 29.8 μg XG eq (μg Chl a), compared to a mean of 79.3 ± 54.9 μg XG eq (μg Chl a) in the whole cruise, in association with haptophyte dominance, proximity of sea ice and high exposure to solar radiation. TEP were generally enriched in the upper surface (10 cm) respect to 4 m, despite a lack of biomass enrichment, suggesting either upward transport by positive buoyancy or bubble scavenging, or higher production at the upper surface by light stress or aggregation. TEP concentrations did not present any significant cyclic diel pattern. Altogether, our results suggest that photobiological stress, sea ice melt and turbulence add to phytoplankton productivity in driving TEP distribution across the Antarctic Peninsula area and Atlantic sector of the Southern Ocean This ... |
author2 |
Ministerio de Educación y Cultura (España) Ministerio de Economía y Competitividad (España) |
format |
Article in Journal/Newspaper |
author |
Zamanillo Campos, Marina Ortega-Retuerta, E. Nunes, Sdena Estrada, Marta Sala, M. Montserrat Royer, S.-J. López-Sandoval, Daffne Emelianov, Mikhail Vaqué, Dolors Marrasé, Cèlia Simó, Rafel |
author_facet |
Zamanillo Campos, Marina Ortega-Retuerta, E. Nunes, Sdena Estrada, Marta Sala, M. Montserrat Royer, S.-J. López-Sandoval, Daffne Emelianov, Mikhail Vaqué, Dolors Marrasé, Cèlia Simó, Rafel |
author_sort |
Zamanillo Campos, Marina |
title |
Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean |
title_short |
Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean |
title_full |
Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean |
title_fullStr |
Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean |
title_full_unstemmed |
Distribution of transparent exopolymer particles (TEP) in distinct regions of the Southern Ocean |
title_sort |
distribution of transparent exopolymer particles (tep) in distinct regions of the southern ocean |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://hdl.handle.net/10261/195124 https://doi.org/10.1016/j.scitotenv.2019.06.524 https://doi.org/10.13039/501100003329 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) |
geographic |
Antarctic Antarctic Peninsula South Orkney Islands Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula South Orkney Islands Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice South Orkney Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice South Orkney Islands Southern Ocean |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2016-81008-R Preprint https://doi.org/10.1016/j.scitotenv.2019.06.524 Sí doi:10.1016/j.scitotenv.2019.06.524 issn: 0048-9697 e-issn: 1879-1026 Science of the Total Environment 691: 736-748 (2019) http://hdl.handle.net/10261/195124 http://dx.doi.org/10.13039/501100003329 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.scitotenv.2019.06.52410.13039/501100003329 |
container_title |
Science of The Total Environment |
container_volume |
691 |
container_start_page |
736 |
op_container_end_page |
748 |
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1790594431230935040 |