Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice
Absorption and fluorescence of chromophoric dissolved organic matter (CDOM) in sea ice and surface waters in the southern Sea of Okhotsk was examined. Sea-water CDOM had featureless absorption increasing exponentially with shorter wavelengths. Sea ice showed distinct absorption peaks in the ultravio...
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INT GLACIOL SOC
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ftawi:oai:epic.awi.de:37128 2024-09-09T19:01:04+00:00 Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice Granskog, Mats Nomura, Daiki Müller, Susann Krell, Andreas Toyota, Takenobu Hattori, Hiroshi 2015-01 application/pdf https://epic.awi.de/id/eprint/37128/ https://epic.awi.de/id/eprint/37128/1/a69A002.pdf https://hdl.handle.net/10013/epic.44848 https://hdl.handle.net/10013/epic.44848.d001 unknown INT GLACIOL SOC https://epic.awi.de/id/eprint/37128/1/a69A002.pdf https://hdl.handle.net/10013/epic.44848.d001 Granskog, M. , Nomura, D. , Müller, S. , Krell, A. , Toyota, T. and Hattori, H. (2015) Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice , Annals of Glaciology, 56 (69), pp. 1-8 . doi:10.3189/2015AoG69A002 <https://doi.org/10.3189/2015AoG69A002> , hdl:10013/epic.44848 EPIC3Annals of Glaciology, INT GLACIOL SOC, 56(69), pp. 1-8, ISSN: 0260-3055 Article isiRev 2015 ftawi https://doi.org/10.3189/2015AoG69A002 2024-06-24T04:11:05Z Absorption and fluorescence of chromophoric dissolved organic matter (CDOM) in sea ice and surface waters in the southern Sea of Okhotsk was examined. Sea-water CDOM had featureless absorption increasing exponentially with shorter wavelengths. Sea ice showed distinct absorption peaks in the ultraviolet, especially in younger ice. Older first-year sea ice had relatively flat absorption spectra in the ultraviolet range. Parallel factor analysis (PARAFAC) identified five fluorescent CDOM components, two humic-like and three protein-like. Sea water was largely governed by humic-like fluorescence. In sea ice, protein-like fluorescence was found in considerable excess relative to sea water.The accumulation of protein-like CDOM fluorescence in sea ice is likely a result of biological activity within the ice. Nevertheless, sea ice does not contribute excess CDOM during melt, but the material released will be of different composition than that present in the underlying waters. Thus, at least transiently, the CDOM introduced during sea-ice melt might provide a more labile source of fresher protein-like DOM to surface waters in the southern Sea of Okhotsk.KEYWORDS: sea ice, sea-ice ecology Article in Journal/Newspaper Annals of Glaciology okhotsk sea Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Okhotsk Annals of Glaciology 56 69 1 8 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Absorption and fluorescence of chromophoric dissolved organic matter (CDOM) in sea ice and surface waters in the southern Sea of Okhotsk was examined. Sea-water CDOM had featureless absorption increasing exponentially with shorter wavelengths. Sea ice showed distinct absorption peaks in the ultraviolet, especially in younger ice. Older first-year sea ice had relatively flat absorption spectra in the ultraviolet range. Parallel factor analysis (PARAFAC) identified five fluorescent CDOM components, two humic-like and three protein-like. Sea water was largely governed by humic-like fluorescence. In sea ice, protein-like fluorescence was found in considerable excess relative to sea water.The accumulation of protein-like CDOM fluorescence in sea ice is likely a result of biological activity within the ice. Nevertheless, sea ice does not contribute excess CDOM during melt, but the material released will be of different composition than that present in the underlying waters. Thus, at least transiently, the CDOM introduced during sea-ice melt might provide a more labile source of fresher protein-like DOM to surface waters in the southern Sea of Okhotsk.KEYWORDS: sea ice, sea-ice ecology |
format |
Article in Journal/Newspaper |
author |
Granskog, Mats Nomura, Daiki Müller, Susann Krell, Andreas Toyota, Takenobu Hattori, Hiroshi |
spellingShingle |
Granskog, Mats Nomura, Daiki Müller, Susann Krell, Andreas Toyota, Takenobu Hattori, Hiroshi Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice |
author_facet |
Granskog, Mats Nomura, Daiki Müller, Susann Krell, Andreas Toyota, Takenobu Hattori, Hiroshi |
author_sort |
Granskog, Mats |
title |
Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice |
title_short |
Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice |
title_full |
Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice |
title_fullStr |
Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice |
title_full_unstemmed |
Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice |
title_sort |
evidence for significant protein-like dissolved organic matter accumulation in sea of okhotsk sea ice |
publisher |
INT GLACIOL SOC |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/37128/ https://epic.awi.de/id/eprint/37128/1/a69A002.pdf https://hdl.handle.net/10013/epic.44848 https://hdl.handle.net/10013/epic.44848.d001 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
Annals of Glaciology okhotsk sea Sea ice |
genre_facet |
Annals of Glaciology okhotsk sea Sea ice |
op_source |
EPIC3Annals of Glaciology, INT GLACIOL SOC, 56(69), pp. 1-8, ISSN: 0260-3055 |
op_relation |
https://epic.awi.de/id/eprint/37128/1/a69A002.pdf https://hdl.handle.net/10013/epic.44848.d001 Granskog, M. , Nomura, D. , Müller, S. , Krell, A. , Toyota, T. and Hattori, H. (2015) Evidence for significant protein-like dissolved organic matter accumulation in Sea of Okhotsk sea ice , Annals of Glaciology, 56 (69), pp. 1-8 . doi:10.3189/2015AoG69A002 <https://doi.org/10.3189/2015AoG69A002> , hdl:10013/epic.44848 |
op_doi |
https://doi.org/10.3189/2015AoG69A002 |
container_title |
Annals of Glaciology |
container_volume |
56 |
container_issue |
69 |
container_start_page |
1 |
op_container_end_page |
8 |
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1809943437972078592 |