Hao et al. (2025): Enhanced Carbon Sequestration Potential Following Sediment Dredging in River Ecosystems: Insights into CO₂ Fluxes, Phytoplankton, and Carbon Fixation Pathway Responses
Zhuo Hao, Shibo Chen, Qingwen Zhang, Bing Liu, Shanghong Chen, IN: Environmental Science & Technology, https://doi.org/10.1021/acs.est.5c05177
River systems play crucial roles in the global carbon balance; however, the environmental consequences of sediment dredging on carbon dioxide (CO₂) emissions and carbon sequestration potential remain poorly understood. This study presents the first systematic investigation linking sediment dredging to long-term carbon sequestration dynamics in river ecosystems, addressing critical uncertainties in anthropogenic impacts on aquatic carbon balance. Over a three-year period, dredging significantly altered CO₂ flux (fCO₂) and dissolved CO₂ partial pressure (pCO₂), with pronounced seasonal variability driven by dissolved organic carbon as a key predictor.