New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean
Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain
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Association for the Sciences of Limnology and Oceanography
2015-02-24
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| Online Access: | http://hdl.handle.net/10261/135857 |
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dig-icm-es-10261-1358572022-12-21T13:02:54Z New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean Catalá, Teresa S. Reche, Isabel Ramón, C.L. López-Sanz, Àngel Fraile-Nuez, Eugenio Calvo, Eva María Blasco, Dolors Álvarez-Salgado, Xosé Antón Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain Careful examination of the absorption coefficient scans of chromophoric dissolved organic matter (CDOM) from the dark ocean samples collected during the Malaspina 2010 circumnavigation allowed us to identify two repeated protuberances, hereafter ‘shoulders’, at 280-320 nm (shoulder I) and 415 nm (shoulder II). A matlab toolbox was developed to deconvolve the absorption coefficient signal exclusively attributed to those shoulders from the standard decreasing exponential curve proper of humic materials. Shoulder I distribution was omnipresent and it sources may be linked partly to nitrate and likely to the antioxidant deoxygadusol too. However, the occurrence of shoulder II was more restricted to certain areas and its source has been recently associated to the enzyme cytochrome c. Application of a water mass analysis to the apparent oxygen utilization (AOU, a proxy to water mass ‘ageing’), ideal age, and absorption coefficients of shoulder I and II unveiled that ideal age was the factor that best explains the distribution of shoulder I whereas ‘ageing’ was the factor that best explains the distribution of shoulder II Peer Reviewed 2016-08-24T12:13:03Z 2016-08-24T12:13:03Z 2015-02-24 2016-08-24T12:13:03Z comunicación de congreso http://purl.org/coar/resource_type/c_5794 2015 Aquatic Sciences Meeting. Program Book: 80 (2015) http://hdl.handle.net/10261/135857 http://www.sgmeet.com/aslo/granada2015/program.asp Sí none Association for the Sciences of Limnology and Oceanography |
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Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain |
| format |
comunicación de congreso |
| author |
Catalá, Teresa S. Reche, Isabel Ramón, C.L. López-Sanz, Àngel Fraile-Nuez, Eugenio Calvo, Eva María Blasco, Dolors Álvarez-Salgado, Xosé Antón |
| spellingShingle |
Catalá, Teresa S. Reche, Isabel Ramón, C.L. López-Sanz, Àngel Fraile-Nuez, Eugenio Calvo, Eva María Blasco, Dolors Álvarez-Salgado, Xosé Antón New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean |
| author_facet |
Catalá, Teresa S. Reche, Isabel Ramón, C.L. López-Sanz, Àngel Fraile-Nuez, Eugenio Calvo, Eva María Blasco, Dolors Álvarez-Salgado, Xosé Antón |
| author_sort |
Catalá, Teresa S. |
| title |
New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean |
| title_short |
New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean |
| title_full |
New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean |
| title_fullStr |
New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean |
| title_full_unstemmed |
New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean |
| title_sort |
new insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean |
| publisher |
Association for the Sciences of Limnology and Oceanography |
| publishDate |
2015-02-24 |
| url |
http://hdl.handle.net/10261/135857 |
| work_keys_str_mv |
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