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dc.contributor.author
Priotto, Santiago Enrique
dc.contributor.author
Garzon Cardona, John Edison
dc.contributor.author
Pratolongo, Paula Daniela
dc.contributor.author
Lara, Ruben Jose
dc.date.available
2022-05-26T15:43:59Z
dc.date.issued
2021-11-11
dc.identifier.citation
Priotto, Santiago Enrique; Garzon Cardona, John Edison; Pratolongo, Paula Daniela; Lara, Ruben Jose; Diagenetic transformation of nitrogenous organic matter in the Southwest Atlantic Shelf; SciTechnol; Journal of Marine Biology & Oceanography; 10; 10; 11-11-2021; 1 - 11
dc.identifier.issn
2324-8661
dc.identifier.uri
http://hdl.handle.net/11336/158239
dc.description.abstract
Amino Acids (AA) and Amino Sugars (AS) were assessed inseston from inner and shelf break waters of the Argentine Sea,and in sediment cores from the inner shelf. Glutamine, asparagine,alanine, serine, glycine and leucine accounted for ~60% of TotalParticulate AA (TPAA) in surface waters. The mol percentage of AAfrom algal frustules (e.g. glycine and serine) increased with depth,while cytoplasmic AA (e.g. alanine and asparagine) decreased,indicating selective bacterial AA uptake. Protein degradationproducts ornitine (orn), Beta-alanine (β-ala), and Gamma-AminoButyric Acid (γ-ABA) doubled their mol percentage from the surfaceto deep water. Percentage contribution of glucosamine to TotalParticulate AS (TPAS) decreased with depth from ~74% to ~60%.Galactosamine followed an inverse trend, reflecting an increase inbacterial nitrogen during seston sinking and degradation. TPAA/TPAS ratios increased from ~30% at surface indicating mixedphyto- and zooplanktonic sources, to ~63% in bottom layersas result of an increasing contribution of phytoplankton-deriveddetritus. Diagenetically fresh material predominated from surface to~50 m depth, changing to still relatively immature POM at 75 m120 m. At depths >750 m, POM reached higher maturity due tobacterial turnover, reflected in a diminished mol percentage ofproteinogenic AA and a higher of non-proteinogenic. Organic matterfrom surface sediments is diagenetically similar to seston at depths >1000 m, suggesting that POM attained a fairly stable condition shortlyafter deposition. Most parameters barely changed between surface (5 cm) and deep (>250 cm) sediment layers, likely due to muchlower rates of OM transformation in the anoxic environment.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
SciTechnol
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aminoácidos
dc.subject
Aminoazucares
dc.subject
Materia Orgánica
dc.subject.classification
Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Diagenetic transformation of nitrogenous organic matter in the Southwest Atlantic Shelf
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-05-17T12:51:29Z
dc.journal.volume
10
dc.journal.number
10
dc.journal.pagination
1 - 11
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Priotto, Santiago Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
dc.description.fil
Fil: Garzon Cardona, John Edison. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina. Universidad Nacional del Sur. Departamento de Química; Argentina
dc.description.fil
Fil: Pratolongo, Paula Daniela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
dc.description.fil
Fil: Lara, Ruben Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
dc.journal.title
Journal of Marine Biology & Oceanography
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.scitechnol.com/abstract/diagenetic-transformation-of-nitrogenous-organic-matter-in-the-southwest-atlantic-shelf-17707.html
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