Data for: Mixed terrestrial and algal organic matter inputs synergistically stimulate CO2 production but suppress priming effects in lake sediments
Description
This study investigated the synergistic effects of combined additions of grass‑derived and algae‑derived organic matter (OM) on CO₂ production rates in the sediments of 13 lakes. To achieve this, sediment microcosms were amended with a mixture of grass‑ and algae‑derived OM (optionally ¹³C‑labelled to track carbon flow) and incubated under controlled conditions for 15 days. The dataset contains three files that provide the raw data supporting all figures and analyses in the associated manuscript: CO2_production_data.xlsx – Cumulative CO₂ production rates measured over the 15‑day incubation, used to evaluate the overall mineralization of the added OM. PE_data.xlsx – Priming effect parameters, including the changes in native sediment organic matter mineralization induced by the mixed OM additions, calculated by comparing treatments with and without OM amendments. Carbon_isotope_data.xlsx – δ¹³C values (or ¹³C‑enrichment) of respired CO₂ and/or sediment pools, which allow partitioning of CO₂ sources between the added grass/algae OM and native sediment OM. All data were obtained from the same set of microcosm experiments and are presented with detailed variable definitions and units within each file. These data are essential for understanding the interactive effects of different OM sources on greenhouse gas emissions and carbon dynamics in lake sediments.
Files
Institutions
- China University of GeosciencesHubei, Wuhan