Tracing priming effects in palsa peat carbon dynamics using a stable isotope-assisted metabolomics approach.

ABSTRACT:

Introduction

Peatlands store up to a third of global soil carbon, and in high latitudes their litter inputs are increasing and changing in composition under climate change. Although litter significantly influences peatland carbon and nutrient dynamics by changing the overall lability of peatland organic matter, the physicochemical mechanisms of this impact-and thus its full scope-remain poorly understood.

Methods

We applied multimodal metabolomics (UPLC-HRMS, ¹H NMR) paired with ¹³C Stable Isotope-Assisted Metabolomics (SIAM) to track litter carbon and its potential priming effects on both existing soil organic matter and carbon gas emissions. Through this approach, we achieved molecule-specific tracking of carbon transformations at unprecedented detail

SUBMITTER: Ayala-Ortiz C 

PROVIDER: S-EPMC12411887 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature