Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes
The abundance of transparent exopolymer particles (TEP) was determined in the northeast Atlantic Ocean (40–55°N, ∼20°W) during several cruises from June to November 1996. An accumulation of TEP in the water column was observed at bloom and post-bloom sites along a 20°W transect in June/July (maximum...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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ftoceanrep:oai:oceanrep.geomar.de:12209 2023-05-15T17:41:02+02:00 Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes Engel, Anja 2004 text https://oceanrep.geomar.de/id/eprint/12209/ https://oceanrep.geomar.de/id/eprint/12209/1/distribution.pdf https://oceanrep.geomar.de/id/eprint/12209/2/tables.csv https://doi.org/10.1016/j.dsr.2003.09.001 en eng Elsevier https://oceanrep.geomar.de/id/eprint/12209/1/distribution.pdf https://oceanrep.geomar.de/id/eprint/12209/2/tables.csv Engel, A. (2004) Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes. Deep Sea Research Part I: Oceanographic Research Papers, 51 (1). pp. 83-92. DOI 10.1016/j.dsr.2003.09.001 <https://doi.org/10.1016/j.dsr.2003.09.001>. doi:10.1016/j.dsr.2003.09.001 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2004 ftoceanrep https://doi.org/10.1016/j.dsr.2003.09.001 2023-04-07T15:00:31Z The abundance of transparent exopolymer particles (TEP) was determined in the northeast Atlantic Ocean (40–55°N, ∼20°W) during several cruises from June to November 1996. An accumulation of TEP in the water column was observed at bloom and post-bloom sites along a 20°W transect in June/July (maximum concentration: 124 μg Gum Xanthan equivalents (Xeq.) l−1), but concentrations were uniformly low (mean concentration: 28.5±10.2 μg Xeq. l−1) during autumn at the BIOTRANS site (47°N, 20°W). TEP concentrations in the open northeast Atlantic were considerably lower than previously published values from coastal sites. However, during June/July TEP:Chl a (weight/weight) ratios were comparable to values at coastal seas. It is suggested that phytoplankton production modulates TEP concentration in the open ocean as it does in coastal systems. TEP contributed significantly to the organic carbon pool as derived from the ratio TEP-C:POC, in summer (mean percentage: 17±7.5; w/w), as well as in autumn (mean percentage: 18±11, w/w). The potential influence of TEP on particle coagulation rates in the northeast Atlantic was assessed from estimates of their influence on particle stickiness and on particle volume concentrations. This indicated that TEP may be essential for initiating particle aggregation at low biomass concentrations, typical for open ocean sites. Article in Journal/Newspaper Northeast Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Deep Sea Research Part I: Oceanographic Research Papers 51 1 83 92 |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
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English |
description |
The abundance of transparent exopolymer particles (TEP) was determined in the northeast Atlantic Ocean (40–55°N, ∼20°W) during several cruises from June to November 1996. An accumulation of TEP in the water column was observed at bloom and post-bloom sites along a 20°W transect in June/July (maximum concentration: 124 μg Gum Xanthan equivalents (Xeq.) l−1), but concentrations were uniformly low (mean concentration: 28.5±10.2 μg Xeq. l−1) during autumn at the BIOTRANS site (47°N, 20°W). TEP concentrations in the open northeast Atlantic were considerably lower than previously published values from coastal sites. However, during June/July TEP:Chl a (weight/weight) ratios were comparable to values at coastal seas. It is suggested that phytoplankton production modulates TEP concentration in the open ocean as it does in coastal systems. TEP contributed significantly to the organic carbon pool as derived from the ratio TEP-C:POC, in summer (mean percentage: 17±7.5; w/w), as well as in autumn (mean percentage: 18±11, w/w). The potential influence of TEP on particle coagulation rates in the northeast Atlantic was assessed from estimates of their influence on particle stickiness and on particle volume concentrations. This indicated that TEP may be essential for initiating particle aggregation at low biomass concentrations, typical for open ocean sites. |
format |
Article in Journal/Newspaper |
author |
Engel, Anja |
spellingShingle |
Engel, Anja Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes |
author_facet |
Engel, Anja |
author_sort |
Engel, Anja |
title |
Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes |
title_short |
Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes |
title_full |
Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes |
title_fullStr |
Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes |
title_full_unstemmed |
Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes |
title_sort |
distribution of transparent exopolymer particles (tep) in the northeast atlantic ocean and their potential significance for aggregation processes |
publisher |
Elsevier |
publishDate |
2004 |
url |
https://oceanrep.geomar.de/id/eprint/12209/ https://oceanrep.geomar.de/id/eprint/12209/1/distribution.pdf https://oceanrep.geomar.de/id/eprint/12209/2/tables.csv https://doi.org/10.1016/j.dsr.2003.09.001 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/12209/1/distribution.pdf https://oceanrep.geomar.de/id/eprint/12209/2/tables.csv Engel, A. (2004) Distribution of transparent exopolymer particles (TEP) in the northeast Atlantic Ocean and their potential significance for aggregation processes. Deep Sea Research Part I: Oceanographic Research Papers, 51 (1). pp. 83-92. DOI 10.1016/j.dsr.2003.09.001 <https://doi.org/10.1016/j.dsr.2003.09.001>. doi:10.1016/j.dsr.2003.09.001 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.dsr.2003.09.001 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
51 |
container_issue |
1 |
container_start_page |
83 |
op_container_end_page |
92 |
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1766142230329819136 |