The association between biogenic and inorganic minerals and the amino acid composition of settling particles
To test the hypothesis that calcium carbonate (rather than opal) carries most organic carbon to the deep sea, total hydrolysable amino acid (THAA) analysis was applied to deep-sea (3000 m) sediment trap material from the northeast Atlantic (PAP Site), a variable but intrinsically carbonate-dominated...
Published in: | Limnology and Oceanography |
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Online Access: | https://oceanrep.geomar.de/id/eprint/29672/ https://oceanrep.geomar.de/id/eprint/29672/1/lno20105552207.pdf https://doi.org/10.4319/lo.2010.55.5.2207 |
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ftoceanrep:oai:oceanrep.geomar.de:29672 2023-05-15T17:41:28+02:00 The association between biogenic and inorganic minerals and the amino acid composition of settling particles Salter, I. Kemp, A. E. S. Lampitt, R. S. Gledhill, Martha 2010 text https://oceanrep.geomar.de/id/eprint/29672/ https://oceanrep.geomar.de/id/eprint/29672/1/lno20105552207.pdf https://doi.org/10.4319/lo.2010.55.5.2207 en eng ASLO (Association for the Sciences of Limnology and Oceanography) https://oceanrep.geomar.de/id/eprint/29672/1/lno20105552207.pdf Salter, I., Kemp, A. E. S., Lampitt, R. S. and Gledhill, M. (2010) The association between biogenic and inorganic minerals and the amino acid composition of settling particles. Limnology and Oceanography, 55 (5). pp. 2207-2218. DOI 10.4319/lo.2010.55.5.2207 <https://doi.org/10.4319/lo.2010.55.5.2207>. doi:10.4319/lo.2010.55.5.2207 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2010 ftoceanrep https://doi.org/10.4319/lo.2010.55.5.2207 2023-04-07T15:20:44Z To test the hypothesis that calcium carbonate (rather than opal) carries most organic carbon to the deep sea, total hydrolysable amino acid (THAA) analysis was applied to deep-sea (3000 m) sediment trap material from the northeast Atlantic (PAP Site), a variable but intrinsically carbonate-dominated system. THAAs were analyzed in conjunction with total organic carbon, biogenic silica, calcium carbonate, and inferred lithogenic fluxes. The THAA-based degradation state of organic carbon could not be systematically explained by changes in the flux of different mineral phases, which could account for only 16% of the observed variability. In addition amino acid parameters indicative of source organisms indicate that diatom cell walls are an important residual component of organic carbon reaching the deep ocean, a finding supported by comparison with data from previous studies of diverse oceanic environments. Finally, during 2001, very high organic carbon fluxes were associated with elevated lithogenic fluxes and low organic matter degradation relative to surrounding years. In accordance with other recent experimental and observational studies, the data indicate that under specific export scenarios, lithogenic fluxes can act as highly significant mediators of organic carbon transfer to the deep ocean. Article in Journal/Newspaper Northeast Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Limnology and Oceanography 55 5 2207 2218 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
To test the hypothesis that calcium carbonate (rather than opal) carries most organic carbon to the deep sea, total hydrolysable amino acid (THAA) analysis was applied to deep-sea (3000 m) sediment trap material from the northeast Atlantic (PAP Site), a variable but intrinsically carbonate-dominated system. THAAs were analyzed in conjunction with total organic carbon, biogenic silica, calcium carbonate, and inferred lithogenic fluxes. The THAA-based degradation state of organic carbon could not be systematically explained by changes in the flux of different mineral phases, which could account for only 16% of the observed variability. In addition amino acid parameters indicative of source organisms indicate that diatom cell walls are an important residual component of organic carbon reaching the deep ocean, a finding supported by comparison with data from previous studies of diverse oceanic environments. Finally, during 2001, very high organic carbon fluxes were associated with elevated lithogenic fluxes and low organic matter degradation relative to surrounding years. In accordance with other recent experimental and observational studies, the data indicate that under specific export scenarios, lithogenic fluxes can act as highly significant mediators of organic carbon transfer to the deep ocean. |
format |
Article in Journal/Newspaper |
author |
Salter, I. Kemp, A. E. S. Lampitt, R. S. Gledhill, Martha |
spellingShingle |
Salter, I. Kemp, A. E. S. Lampitt, R. S. Gledhill, Martha The association between biogenic and inorganic minerals and the amino acid composition of settling particles |
author_facet |
Salter, I. Kemp, A. E. S. Lampitt, R. S. Gledhill, Martha |
author_sort |
Salter, I. |
title |
The association between biogenic and inorganic minerals and the amino acid composition of settling particles |
title_short |
The association between biogenic and inorganic minerals and the amino acid composition of settling particles |
title_full |
The association between biogenic and inorganic minerals and the amino acid composition of settling particles |
title_fullStr |
The association between biogenic and inorganic minerals and the amino acid composition of settling particles |
title_full_unstemmed |
The association between biogenic and inorganic minerals and the amino acid composition of settling particles |
title_sort |
association between biogenic and inorganic minerals and the amino acid composition of settling particles |
publisher |
ASLO (Association for the Sciences of Limnology and Oceanography) |
publishDate |
2010 |
url |
https://oceanrep.geomar.de/id/eprint/29672/ https://oceanrep.geomar.de/id/eprint/29672/1/lno20105552207.pdf https://doi.org/10.4319/lo.2010.55.5.2207 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/29672/1/lno20105552207.pdf Salter, I., Kemp, A. E. S., Lampitt, R. S. and Gledhill, M. (2010) The association between biogenic and inorganic minerals and the amino acid composition of settling particles. Limnology and Oceanography, 55 (5). pp. 2207-2218. DOI 10.4319/lo.2010.55.5.2207 <https://doi.org/10.4319/lo.2010.55.5.2207>. doi:10.4319/lo.2010.55.5.2207 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.4319/lo.2010.55.5.2207 |
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Limnology and Oceanography |
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55 |
container_issue |
5 |
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2207 |
op_container_end_page |
2218 |
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1766143034825637888 |