English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/89792
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 38 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)

Sources of organic matter in seagrass-colonized sediments: A stable isotope study of the silt and clay fraction from Posidonia oceanica meadows in the western Mediterranean

Autor Papadimitriou, S.; Kennedy, Hilary; Kennedy, D. P.; Duarte, Carlos M. ; Marbà, Núria
Fecha de publicación 2005
EditorPergamon Press
Citación Organic Geochemistry 36(6): 949-961 (2005)
ResumenThe origin of sedimentary organic matter in 22 sandy beds of Posidonia oceanica (L.) Delile on the coast of the Iberian Peninsula and the Balearic Islands in the northwestern Mediterranean Sea was investigated using natural abundance stable isotope measurements of carbon and nitrogen (δ13C and δ15N) in fine (<63 μm grain size) surface sediments and in the local primary sources of detrital organic matter, seston, above- and below-ground seagrass tissues and bulk epiphytes. The δ13C measurements provided the greatest power for resolving primary sources of the fine sedimentary organic matter in these shallow coastal ecosystems. Their use in an end member, isotopic mass balance approach showed that sestonic particles were as important as seagrass-derived detrital material as a source of sedimentary organic carbon in the P. oceanica meadows. The δ15N measurements for the sediments exhibited patterns of isotopic depletion on a regional scale relative to the local primary sources of organic matter, which could be associated with occurrence of microbial fixation of molecular nitrogen (N2), indicating potential contribution of this process to the pool of sedimentary nitrogen in the P. oceanica meadows. © 2005 Elsevier Ltd. All rights reserved.
URI http://hdl.handle.net/10261/89792
Identificadoresdoi: 10.1016/j.orggeochem.2004.12.002
issn: 0146-6380
Aparece en las colecciones: (IMEDEA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.