Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/90138
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Utility of amino acids as biomarkers in polar marine sediments: a study on the continental shelf of Larsen region, Eastern Antarctic Peninsula |
Autor: | Sañé, Elisabet CSIC; Isla, Enrique CSIC ORCID ; Grémare, Antoine; Escoubeyrou, K. | Palabras clave: | Marine sediments Amino acids Antarctica |
Fecha de publicación: | nov-2013 | Editor: | Springer Nature | Citación: | Polar Biology 36(11): 1671-1680 (2013) | Resumen: | Ongoing global warming is affecting the polar regions at a faster pace than in many other lower latitude environments. Based on the idea that the changes at the sea surface leave a signal in the sedimentary record, we analysed the total hydrolysable amino acid (THAA) and enzymatically hydrolysable amino acid (EHAA) contents in sediments off the coast of the eastern Antarctic Peninsula during the decade following the collapse of sections A and B of the Larsen ice shelf to check their utility as biomarkers of this event. Two organic matter lability indexes (the EHAA-to-THAA ratio and the Dauwe degradation index) were also calculated to assess the quality of the organic matter in the sediment column. The THAA and EHAA concentrations in the upper 5 mm varied between ~1 and ~10 nmol mg-1 DW-1, corresponding to an oligotrophic environment, whereas the quality of the organic matter as indicated by the lability indexes was relatively high in the upper sediment column (<2 cm deep). The amino acid profiles and indexes in the sediment column were compared to the pigment profiles and indexes published in previous studies for the same stations. The results suggest that in the sediment column, pigments track more accurately than amino acids the pelagic organic matter supply to the seabed after the collapse of the Larsen ice shelf. © 2013 Springer-Verlag Berlin Heidelberg | Descripción: | 10 pages, 5 figures, 5 tables | Versión del editor: | https://doi.org/10.1007/s00300-013-1386-5 | URI: | http://hdl.handle.net/10261/90138 | DOI: | 10.1007/s00300-013-1386-5 | Identificadores: | doi: 10.1007/s00300-013-1386-5 issn: 0722-4060 e-issn: 1432-2056 |
Aparece en las colecciones: | (ICM) Artículos |
Mostrar el registro completo
CORE Recommender
SCOPUSTM
Citations
4
checked on 13-abr-2024
WEB OF SCIENCETM
Citations
4
checked on 28-feb-2024
Page view(s)
240
checked on 22-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.