Global inland-water oxygen cycle has changed in the Anthropocene

Inland waters are an important resource, a highly diverse habitat, and a key component of global biogeochemical cycles. Oxygen plays a major role in inland-water ecosystem functioning, but long-term changes in its cycling remain unknown. Here we quantify global inland-water oxygen production, consumption, and exchange with the atmosphere during 1900-2010 using a spatially-explicit, mass-balanced, mechanistic model which takes into account changes in climate, hydrology, human activities, and the coupled biogeochemical (oxygen-nutrient-organic matter) dynamics. The model results show that global inland-water oxygen turnover increased during 1900-2010: production from 0.16 to 0.94 Pg yr-1 and consumption from 0.44 to 1.47 Pg yr-1. Inland waters overall remained heterotrophic and a sink of atmospheric oxygen. Direct human perturbations (changes in hydrology and nutrient supply) were more important in increasing oxygen turnover than indirect effects via warming., , , # Data from: Global inland-water oxygen cycle has changed in the Anthropocene Dataset DOI: [10.5061/dryad.x69p8czt2](https://doi.org/10.5061/dryad.x69p8czt2) ## Description of the data and file structure Global inland-water oxygen cycle has changed in the Anthropocene [https://doi.org/10.5061/dryad.x69p8czt2](https://doi.org/10.5061/dryad.x69p8czt2) ### Files and variables For more details, please read the paper: [https://doi.org/10.1126/sciadv.adr1695](https://doi.org/10.1126/sciadv.adr1695) #### File: Fig2b.Global_inland-water_O2_production_kg_per_grid_per_year_1900.asc **Description:** raw data of Fig.2b. spatial distributions in the simulated global oxygen production in inland waters at a resolution of 0.5° × 0.5° in 1900. The file can be opened with txt, but keeps the format of spatial map. #### File: Fig3b.Global_inland-water_O2_consumption_kg_per_grid_per_year_1900.asc **Description:** raw data of Fig.3b. spatial distributions in the simulated global oxygen consumption...,