scholarly journals Carbon-isotope ratios and carbon, nitrogen and sulfur abundances in flora and soil organic matter from a temperate-zone bog and marsh.

2000 ◽  
Vol 34 (3) ◽  
pp. 237-245 ◽  
Author(s):  
Edward R. C. Hornibrook ◽  
Frederick J. Longstaffe ◽  
William S. Fyfe ◽  
Yvonne Bloom
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Carbon Isotope ◽  
Isotope Ratios ◽  
Temperate Zone ◽  
Carbon Isotope Ratios

Carbon Isotope Ratios of Particulate Organic Matter in the Gulf of St. Lawrence

1979 ◽  
Vol 36 (6) ◽  
pp. 678-682 ◽  
Author(s):  
F. C. Tan ◽  
P. M. Strain
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Organic Carbon ◽  
Carbon Isotope ◽  
Particulate Organic Matter ◽  
Surface Sediments ◽  
Isotope Ratios ◽  
Lawrence Estuary ◽  
Carbon Isotope Ratios ◽  
Surface Samples

Sixteen offshore surface samples within the Gulf of St. Lawrence show low δ13C values and are similar to eight offshore surface samples collected seaward of the Gulf of St. Lawrence. The δ13C surface values are consistent with δ13C values in plankton produced at the temperature found in the euphotic zone in the study area. Higher values are observed in four surface samples from the mouth of the St. Lawrence Estuary and probably result from high carbon demand during periods of high biological productivity. Lower values found in seven deep POC samples indicate changes in the nature of the POC caused by biological degradation of the organic matter. Significant differences (2–6‰) between the uniformly high δ13C values of the organic carbon in surface sediments and the low values of near-bottom water POC have been observed. The similarity between the δ13C values of surface water POC and the surface sediments suggest that surface water POC is an important source of organic carbon in surface sediments. Several observations of large vertical δ13C gradients in deep water POC suggest the presence of resuspended sediments 30–60 m above the sediment–water interface. Key words: particulate organic matter, carbon isotope ratios, isotope fractionation, sediment resuspension, sediment sources, Gulf of St. Lawrence

Carbon isotope ratios of organic matter in Bering Sea settling particles: Extremely high remineralization of organic carbon derived from diatoms

2016 ◽  
Vol 50 (3) ◽  
pp. 241-248 ◽  
Author(s):  
Saki Yasuda ◽  
Tasuku Akagi ◽  
Hiroshi Naraoka ◽  
Fumio Kitajima ◽  
Kozo Takahashi
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Carbon Isotope ◽  
Bering Sea ◽  
Isotope Ratios ◽  
Carbon Isotope Ratios ◽  
Settling Particles
Sign in / Sign up

Export Citation Format

Share Document