scholarly journals An 11,000-year record of depositional environmental change based upon particulate organic matter and stable isotopes (C and N) in a lake sediment in southeastern Brazil

2018 ◽  
Vol 84 ◽  
pp. 373-384 ◽  
Author(s):  
Flávio Lima Lorente ◽  
Luiz Carlos Ruiz Pessenda ◽  
Francisca Oboh-Ikuenobe ◽  
Antonio Alvaro Buso Junior ◽  
Dilce de Fátima Rossetti ◽  
...  
Keyword(s):  
Stable Isotopes ◽  
Organic Matter ◽  
Environmental Change ◽  
Lake Sediment ◽  
Particulate Organic Matter ◽  
Southeastern Brazil ◽  
C And N

Evaluation of sustainability of mixed food crop fields by monitoring particulate organic matter (POM) status and nutrient concentrations

Soil Research ◽  
2008 ◽  
Vol 46 (5) ◽  
pp. 464 ◽  
Author(s):  
Lydie-Stella Koutika ◽  
Martin Yemefack ◽  
Daniel Folefoc
Keyword(s):  
Organic Matter ◽  
Particulate Organic Matter ◽  
Exchange Capacity ◽  
Nutrient Concentrations ◽  
Food Crop ◽  
Crop Fields ◽  
Mixed Crop ◽  
Crop Field ◽  
C And N ◽  
Sub Saharan

Particulate organic matter (POM) status is a useful indicator to assess labile soil organic matter (SOM) and to evaluate soil fertility under different agricultural systems, mainly in low-input agriculture as practiced in most of the sub-Saharan region of Africa. Total POM (53–4000 µm), different sized POM fraction characteristics (mass, C and N contents), and nutrient concentrations of soils were evaluated under 2 mixed food crop field types: a preceding forest fallow (forest) and a preceding fallow dominated by Chromolaena odorata (King & Robinson) (Chromolaena spp.) in the 0–0.10 m horizon of Rhodic Kandiudult, Typic Kandiudult, and Typic Kandiudox soils. The mass and C and N contents of total POM were higher in the Typic Kandiudox than in the Typic Kandiudult, while the Rhodic Kandiudult was intermediate. The pH was lower in the Typic Kandiudox (4.67). Forest had higher pH, Ca2+ and Mg2+ concentrations, and effective cation exchange capacity, while Chromolaena had higher C content in medium (2000–250 µm) and fine (250–53 µm) POM fractions and higher N content in coarse POM (4000–2000 µm). Considering nutrient concentrations, forest appears to be more suitable for a mixed-crop field-crop system than Chromolaena; however, the opposite was found when considering POM status.

scholarly journals Relationship between bacterial compartment and particulate organic matter (POM) in coastal systems: An assessment using fatty acids and stable isotopes

2020 ◽  
Vol 239 ◽  
pp. 106720 ◽  
Author(s):  
Camilla Liénart ◽  
Nicolas Savoye ◽  
Pascal Conan ◽  
Valérie David ◽  
Pierrick Barbier ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Stable Isotopes ◽  
Organic Matter ◽  
Particulate Organic Matter ◽  
Coastal Systems
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