English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/135857
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

New insights on the ubiquity of chromophoric products of microbial degradation in the dark global ocean

AuthorsCatalá, Teresa S.; Reche, Isabel; Ramón, C.L.; López-Sanz, Àngel ; Fraile-Nuez, E.; Calvo, Eva María ; Blasco, Dolors ; Álvarez-Salgado, Xosé Antón
Issue Date24-Feb-2015
PublisherAssociation for the Sciences of Limnology and Oceanography
Citation2015 Aquatic Sciences Meeting. Program Book: 80 (2015)
AbstractCareful 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
DescriptionAquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain
Publisher version (URL)http://www.sgmeet.com/aslo/granada2015/program.asp
URIhttp://hdl.handle.net/10261/135857
Appears in Collections:(ICM) Comunicaciones congresos
(IIM) Comunicaciones congresos
Files in This Item:
There are no files associated with this item.
Show full item record
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.