Organic carbon (OC) content, elemental (C/N) and isotopic (d13C) composition of organic matter (OM) constrain relative contributions from both marine and terrestrial sources to modern sediments in the NE Gulf of Cadiz (GoC) shelf. C/N and (d13C) indicate a transition from a dominantly marine to a terrestrial input of OM deposited in Bay of Cadiz and the Guadalquivir prodelta. OC and mass accumulation rates (MARs, based on bulk density and 210Pb-derived sediment MAR) suggest that labile OM from primary productivity accounts for the low OC content and burial rates in sediments in the NE GoC shelf.
Modern accumulation rates and sources of organic carbon in the NE Gulf of Cadiz (SW Iberian Peninsula) / Roberta, Guerra; Serena, Righi; Enrique, Garcia-Luque. - In: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY. - ISSN 0236-5731. - ELETTRONICO. - 305:(2015), pp. 429-437. [10.1007/s10967-015-3991-y]
Modern accumulation rates and sources of organic carbon in the NE Gulf of Cadiz (SW Iberian Peninsula)
GUERRA, ROBERTA;RIGHI, SERENA;
2015
Abstract
Organic carbon (OC) content, elemental (C/N) and isotopic (d13C) composition of organic matter (OM) constrain relative contributions from both marine and terrestrial sources to modern sediments in the NE Gulf of Cadiz (GoC) shelf. C/N and (d13C) indicate a transition from a dominantly marine to a terrestrial input of OM deposited in Bay of Cadiz and the Guadalquivir prodelta. OC and mass accumulation rates (MARs, based on bulk density and 210Pb-derived sediment MAR) suggest that labile OM from primary productivity accounts for the low OC content and burial rates in sediments in the NE GoC shelf.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
