C:N:P Molar Ratios, Sources and 14C Dating of Surficial Sediments from the NW Slope of Cuba

C:N:P Molar Ratios, Sources and 14C Dating of Surficial Sediments from the NW Slope of Cuba

The surficial sediments recovered from 12 sites located near the channel axis of the Florida Straits and the lower slope off NW Cuba were analyzed for total organic carbon (TOC), nitrogen (TN), phosphorus (TP), elemental C:N:P ratios, C and N isotopic values, and 14C dating. The depth profiles of TO...

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Veröffentlicht in:PloS one 2015-06, Vol.10 (6), p.e0125562-e0125562
Hauptverfasser: de la Lanza Espino, Guadalupe, Soto, Luis A
Format: Artikel
Sprache:eng
Schlagworte:
Bathymetry
Carbon
Carbon - analysis
Carbon 14
Chronology
Cuba
Dating
Environmental Monitoring - methods
Florida
Fluxes
Geologic Sediments - chemistry
Holocene
Nitrogen
Nitrogen - analysis
Organic carbon
Particulate Matter
Particulates
Phosphorus
Phosphorus - analysis
Ratios
Sediments
Slopes
Straits
Total organic carbon
Trends
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Zusammenfassung:The surficial sediments recovered from 12 sites located near the channel axis of the Florida Straits and the lower slope off NW Cuba were analyzed for total organic carbon (TOC), nitrogen (TN), phosphorus (TP), elemental C:N:P ratios, C and N isotopic values, and 14C dating. The depth profiles of TOC, TN, and TP (0-18 cm) displayed a downcore trend and a significant variation. The TOC values were low (0.15 to 0.62%; 66 to 516 µmol g(-1)). Sites near the island's lower slope had lower TOC average concentrations (158-333 µmol g(-1)) than those closer to the channel axis (averaging 341-516 µmol g(-1); p
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0125562