Summary of project PR002833
This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR002833. The data can be accessed directly via it's Project DOI: 10.21228/M8G85W This work is supported by NIH grant, U2C- DK119886. See: https://www.metabolomicsworkbench.org/about/howtocite.php
| Project ID: | PR002833 |
| Project DOI: | doi: 10.21228/M8G85W |
| Project Title: | Compounded effects of warming and drought accelerate microbially mediated organic matter decomposition and suppress methanogenesis in peatlands |
| Project Summary: | Northern peatlands store nearly one-third of global soil carbon. In these cold, anoxic environments, decomposition is regulated by microbial networks adapted to oxygen limitation, allowing carbon, including recalcitrant phenolic compounds, to accumulate. Climate warming and drought increase oxygen availability, altering microbial carbon access. We leverage the SPRUCE whole-ecosystem warming experiment and an extreme drought that lowered water tables by 30 cm to determine how these perturbations influence microbial carbon cycling. Warming stimulated aerobic bacteria that correlated with porewater CO2 and metabolized phenolic compounds. Drought amplified warming effects by deepening water tables, stimulating aerobic respiration while suppressing fermentation and methanogenesis. Methanogen activity increased with warming under anoxic conditions but declined with drought. Metabolite-informed network analysis revealed covariance between fatty acids, amino acids, methanogens, and warming-responsive facultatively anaerobic heterotrophs, suggesting that organic acid exchange links temperature-sensitive heterotrophic and methanogenic processes. |
| Institute: | University of Arizona |
| Department: | Environmental Science |
| Laboratory: | Tfaily Lab |
| Last Name: | Makke |
| First Name: | Ghiwa |
| Address: | 1230 North Cherry Avenue, Tucson, AZ, 85721, USA |
| Email: | ghiwamakke@arizona.edu |
| Phone: | 520-626-3650 |
Summary of all studies in project PR002833
| Study ID | Study Title | Species | Institute | Analysis(* : Contains Untargted data) | Release Date | Version | Samples | Download(* : Contains raw data) |
|---|---|---|---|---|---|---|---|---|
| ST004499 | Compounded effects of warming and drought accelerate microbially mediated organic matter decomposition and suppress methanogenesis in peatlands | University of Arizona | MS* | 2026-01-21 | 1 | 27 | Uploaded data (16.7G)* |
