In most environments, CH4 is produced from acetate (ie the methyl group) and H2/CO2 as
precursors. The relative contribution of these two methanogenic pathways to total CH4 …

Natural variations of the 13C/12C ratio have been frequently used over the last three
decades to trace C sources and fluxes between plants, microorganisms, and soil. Many of …

The nine editions of Stable Isotope Geochemistry have appeared over a time span of nearly
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …

Each year rivers transport approximately 0.25× 1015g of dissolved (< 0.5 μm) organic
carbon (DOC) and 0.15× 1015g of particulate (> 0.5 μm) organic carbon (POC) from …

This review is concerned with the isotopic relationships between organic compounds
produced by a single organism, specifically their enrichments or depletions in 13C relative to …

The carbon isotopic composition of any naturally synthesized organic compound depends
on (1) the carbon source utilized,(2) isotope effects associated with assimilation of carbon by …

Chemical taxonomy based upon the composition of lipids is widely applied to investigate
microbial communities and fatty acids have recently been employed to connect soil …

The terrestrial carbon (C) cycle has received increasing interest over the past few decades,
however, there is still a lack of understanding of the fate of newly assimilated C allocated …

The use of biomarkers in combination with stable isotope analysis is a new approach in
microbial ecology and a number of papers on a variety of subjects have appeared. We will …

Seawater circulation in permeable coastal sediments is driven by tidal changes in hydraulic
gradients. The resulting submarine groundwater discharge is a source of nutrients and …