The natural organic matter (NOM) in an aquifer is a complex mixture of substances, such as humic acids, fulvic acids, amino acids, carbohydrates, lipids, lignin, and waxes. From: Encyclopedia of Analytical Science (Second Edition), 2005 ...
Peatlands accumulate organic matter (OM) under anaerobic conditions. After drainage for forestry or agriculture, microbial respiration and peat oxidation induce OM losses and change the stoichiometry of the remaining organic material. Here, we (i) evaluate whether land use (cropland CL, grassland GL...
These optically active materials are known as chromophoric dissolved organic matter (CDOM). Upon light absorption, a portion in the CDOM pools can subsequently fluoresce. These optical features allow optical approaches to characterize different components in the DOM pools (Coble, 2007; Yamashita and ...
2014). The heterogeneity of soil C and N nutrients caused by exogenous addition of organic matter (OM) is a prerequisite for changes in microbial ecology (Bender et al. 2016; Banerjee et al. 2019). Green manure affects soil microbial communities directly by enhancing soil nutrients, and ...
Molecular and stable carbon isotopic compositions were obtained for the organic matter (OM) in sediment trap samples from the Japan Trench at 4500 and 8500–8800 m in depth. The analytical results show that OM in sinking particles are composed of both freshly-deposited and resuspended OM. The ...
Beach wrack is an important supplier of nutrients and organic matter to sandy beach ecosystems and underlying subterranean estuaries (STEs), producing metabolic hotspots in these otherwise organic carbon- and nutrient-poor environments. To assess the impact of beach wrack type (e.g., marine, terrest...
All of these processes also have the potential to affect the share of comparatively labile pools in soils, such as particulate organic matter (POM). This pool is composed of partly decomposed plant fragments that have, if not occluded within aggregate structures, comparatively short residence time ...
[20] Based on the organic elemental compositions measured using high-resolution mass spectrometry, the OM/OC mass ratio, which is extensively used to covert organic carbon mass to organic matter mass in filter-based aerosol chemistry studies, can be calculated. As shown in Figure 4b, the OM/OC...
Solid and aqueous phase Al species are recognized to affect organic matter (OM) stabilization in forest soils. However, little is known about the dynamics of formation, composition and dissolution of organo-Al hydroxide complexes in microbially-active soil systems, where plant litter is subject to ...
Organic petrology is a branch of earth sciences that studies the organic matter occurring in sedimentary sequences, particularly in coal (concentrated organic matter) and finely disseminated in sedimentary rocks (dispersed organic matter—DOM) by using a set of petrographic methods mostly in combination...