Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean
Transparent exopolymer particles (TEP) are formed by the assembly of dissolved precursors, mainly mono and polysaccharides (DMCHO and DPCHO) that are released by microorganisms. Although TEP formation plays a significant role in carbon export to deep waters and can affect gas exchange at the sea sur...
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ftunivnantes:oai:HAL:hal-00691368v1 2023-05-15T14:04:37+02:00 Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean Ortega-Retuerta, E. Reche, I. Pulido-Villena, Elvira Agusti, S. Duarte, C. M. Universidad de Granada = University of Granada (UGR) 2009 https://hal.archives-ouvertes.fr/hal-00691368 https://doi.org/10.1016/j.marchem.2009.06.004 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2009.06.004 hal-00691368 https://hal.archives-ouvertes.fr/hal-00691368 doi:10.1016/j.marchem.2009.06.004 ISSN: 0304-4203 Marine Chemistry https://hal.archives-ouvertes.fr/hal-00691368 Marine Chemistry, 2009, 115, pp.59-65. ⟨10.1016/j.marchem.2009.06.004⟩ Transparent exopolymer particles Monosaccharides Polysaccharides Carbohydrates Southern Ocean MARINE BACTERIOPLANKTON BACTERIAL-COLONIZATION SPATIAL-DISTRIBUTION ORGANIC-CARBON ATLANTIC-OCEAN POLAR FRONT ROSS SEA ABUNDANCE PHYTOPLANKTON ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2009 ftunivnantes https://doi.org/10.1016/j.marchem.2009.06.004 2022-12-13T23:43:25Z Transparent exopolymer particles (TEP) are formed by the assembly of dissolved precursors, mainly mono and polysaccharides (DMCHO and DPCHO) that are released by microorganisms. Although TEP formation plays a significant role in carbon export to deep waters and can affect gas exchange at the sea surface, simultaneous measurements of TEP and their precursors in natural waters have been scantly reported. In this study, we described the spatial (vertical and regional) distribution of TEP, DMCHO and DPCHO in a region located around the Antarctic Peninsula, assessed their contribution to the total organic carbon pool, and explored their relationships with phytoplankton (with chlorophyll a (chl a) as a proxy) and bacteria. TEP concentration ranged from undetectable values to 48.9 mu g XG eq L-1 with a mean value of 15.4 mu g XG eq L-1 (11.6 mu g TEP-C L-1). DMCHO and DPCHO showed average values of 4.3 mu mol C L-1 and 8.6 mu mol C L-1. respectively. We did not find simple relationships between the concentrations of TEP and dissolved carbohydrates, but a negative correlation between DMCHO and DPCHO was observed. Chl a was the best regressor of TEP concentration in waters within the upper mixed layer, while bacterial production was the best regressor of TEP concentration below the mixed layer, underlining the direct link between these particles and bacterial activity in deep waters. (C) 2009 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ross Sea Southern Ocean Université de Nantes: HAL-UNIV-NANTES Antarctic Antarctic Peninsula Ross Sea Southern Ocean The Antarctic Marine Chemistry 115 1-2 59 65 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Transparent exopolymer particles Monosaccharides Polysaccharides Carbohydrates Southern Ocean MARINE BACTERIOPLANKTON BACTERIAL-COLONIZATION SPATIAL-DISTRIBUTION ORGANIC-CARBON ATLANTIC-OCEAN POLAR FRONT ROSS SEA ABUNDANCE PHYTOPLANKTON ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Transparent exopolymer particles Monosaccharides Polysaccharides Carbohydrates Southern Ocean MARINE BACTERIOPLANKTON BACTERIAL-COLONIZATION SPATIAL-DISTRIBUTION ORGANIC-CARBON ATLANTIC-OCEAN POLAR FRONT ROSS SEA ABUNDANCE PHYTOPLANKTON ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Ortega-Retuerta, E. Reche, I. Pulido-Villena, Elvira Agusti, S. Duarte, C. M. Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean |
topic_facet |
Transparent exopolymer particles Monosaccharides Polysaccharides Carbohydrates Southern Ocean MARINE BACTERIOPLANKTON BACTERIAL-COLONIZATION SPATIAL-DISTRIBUTION ORGANIC-CARBON ATLANTIC-OCEAN POLAR FRONT ROSS SEA ABUNDANCE PHYTOPLANKTON ANTARCTICA [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
Transparent exopolymer particles (TEP) are formed by the assembly of dissolved precursors, mainly mono and polysaccharides (DMCHO and DPCHO) that are released by microorganisms. Although TEP formation plays a significant role in carbon export to deep waters and can affect gas exchange at the sea surface, simultaneous measurements of TEP and their precursors in natural waters have been scantly reported. In this study, we described the spatial (vertical and regional) distribution of TEP, DMCHO and DPCHO in a region located around the Antarctic Peninsula, assessed their contribution to the total organic carbon pool, and explored their relationships with phytoplankton (with chlorophyll a (chl a) as a proxy) and bacteria. TEP concentration ranged from undetectable values to 48.9 mu g XG eq L-1 with a mean value of 15.4 mu g XG eq L-1 (11.6 mu g TEP-C L-1). DMCHO and DPCHO showed average values of 4.3 mu mol C L-1 and 8.6 mu mol C L-1. respectively. We did not find simple relationships between the concentrations of TEP and dissolved carbohydrates, but a negative correlation between DMCHO and DPCHO was observed. Chl a was the best regressor of TEP concentration in waters within the upper mixed layer, while bacterial production was the best regressor of TEP concentration below the mixed layer, underlining the direct link between these particles and bacterial activity in deep waters. (C) 2009 Elsevier B.V. All rights reserved. |
author2 |
Universidad de Granada = University of Granada (UGR) |
format |
Article in Journal/Newspaper |
author |
Ortega-Retuerta, E. Reche, I. Pulido-Villena, Elvira Agusti, S. Duarte, C. M. |
author_facet |
Ortega-Retuerta, E. Reche, I. Pulido-Villena, Elvira Agusti, S. Duarte, C. M. |
author_sort |
Ortega-Retuerta, E. |
title |
Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean |
title_short |
Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean |
title_full |
Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean |
title_fullStr |
Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean |
title_full_unstemmed |
Uncoupled distributions of transparent exopolymer particles (TEP) and dissolved carbohydrates in the Southern Ocean |
title_sort |
uncoupled distributions of transparent exopolymer particles (tep) and dissolved carbohydrates in the southern ocean |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.archives-ouvertes.fr/hal-00691368 https://doi.org/10.1016/j.marchem.2009.06.004 |
geographic |
Antarctic Antarctic Peninsula Ross Sea Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Ross Sea Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ross Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ross Sea Southern Ocean |
op_source |
ISSN: 0304-4203 Marine Chemistry https://hal.archives-ouvertes.fr/hal-00691368 Marine Chemistry, 2009, 115, pp.59-65. ⟨10.1016/j.marchem.2009.06.004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marchem.2009.06.004 hal-00691368 https://hal.archives-ouvertes.fr/hal-00691368 doi:10.1016/j.marchem.2009.06.004 |
op_doi |
https://doi.org/10.1016/j.marchem.2009.06.004 |
container_title |
Marine Chemistry |
container_volume |
115 |
container_issue |
1-2 |
container_start_page |
59 |
op_container_end_page |
65 |
_version_ |
1766275827939409920 |