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In the Southeastern region of Buenos Aires province, soybean monoculture has led to a decline in soil organic matter (SOM) levels in soil, mostly the labile fractions. The reduction of SOM has a negative impact on the soil environment. Cover crops (CC) constitute an alternative to maintain or improve SOM levels. The aim of this study was to determine the effect of oat as CC on (a) the SOM dynamics...
To estimate the effectiveness of preservative/poisons on sediment trap material in freshwater environments, we measured the ratio of particulate organic matter retention [particulate organic carbon (POC) and nitrogen (PON), particulate phosphorus (PP)] using simulated sediment trap material (SSTM). SSTM was collected in summer and fall from depths of 30 and 85 m in the mesotrophic northern basin of...
Stable isotope values are useful for elucidating C and N cycling and pathways in marine and aquatic ecosystems. Variations in the base-line isotope values, the δ13C and δ15N values of phytoplankton, put constraints on their usefulness as tracers for trophic interactions and sources of organic matter in food web studies, however. We investigated the C and N stable isotope values of suspended particulate...
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