Nitrate transformation and immobilization in particulate organic matter incubations: Influence of redox, iron and (a)biotic conditions.

ABSTRACT: Nitrate can be reduced to other N inorganic species via denitrification and incorporated into organic matter by immobilization; however, the effect of biotic/abiotic and redox condition on immobilization and denitrification processes from a single system are not well documented. We hypothesize nitrate (NO3-) transformation pathways leading to the formation of dissolved- and solid-phase organic N are predominantly controlled by abiotic reactions, but the formation of soluble inorganic N species is controlled by redox condition. In this study, organic matter in the form of leaf compost (LC) was spiked with 15NO3- and incubated under oxic/anoxic and biotic/abiotic conditions at pH 6.5. We seek to understand how variations in environmental conditions impact NO3- transformation pathways through

SUBMITTER: Kizewski FR 

PROVIDER: S-EPMC6611582 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature