Nitrogen addition effect overrides warming effect on dissolved CO2 and phytoplankton structure in shallow lakes
Document Type
Article
Publication Date
10-1-2023
Abstract
Shallow lakes are numerous in all climate zones, but our knowledge about their dissolved carbon dioxide (CO2) response to future climate change and nutrient enrichment is rather limited. Here we performed a mesocosm experiment with four treatments to investigate how warming and nitrogen addition will impact the partial pressure of CO2 (pCO2) and phytoplankton community individually and combined. We found that warming alone had no significant effect on pCO2, while nitrogen addition increased pCO2 significantly. The combined effects of nitrogen addition and warming on pCO2 level were prevalent, indicating that eutrophic shallow lakes would be double-jeopardized in the future climate. Warming and nitrogen addition together also showed to have changed the phytoplankton community structure, suggesting a potential shifting of biological system in shallow lakes under changing climate. These findings highlight the importance of reducing nitrogen pollution to shallow lake systems for sustainable development goal.
Publication Source (Journal or Book title)
Water Research
Recommended Citation
Yuan, D., Xu, Y., Ma, S., Le, J., Zhang, K., Miao, R., & Li, S. (2023). Nitrogen addition effect overrides warming effect on dissolved CO2 and phytoplankton structure in shallow lakes. Water Research, 244 https://doi.org/10.1016/j.watres.2023.120437