Extreme Climate Anomalies Enhancing Cyanobacterial Blooms in Eutrophic Lake Taihu, China

Climate warming in combination with nutrient enrichment can greatly promote phytoplankton proliferation and blooms eutrophic waters. Lake Taihu, China, is a large, shallow system. Since 2007, this lake has experienced extensive input reductions aimed at controlling cyanobacterial blooms. However, intense have persisted through 2017 record-setting bloom occurring May 2017. Causal analysis suggested that was sygenerically driven by high external loading from flooding 2016 the Taihu catchment notable warmer winter during 2016/2017. High precipitation associated strong 2015/2016 El Niño joint effects of Atlantic Multi-decadal Oscillation (AMO) Pacific Decadal (PDO), while persistent warmth 2016/2017 strongly related to warm phases AMO PDO. The elevated water column pH led dissolved oxygen depletion near sediment, both which mobilized phosphorus sediment overlying water, further promoting Our finding indicates regional climate anomalies exacerbated eutrophication via positive feedback mechanism, intensifying internal cycling aggravating In light global expansion blooms, especially lakes, these are nested within larger scale predicted continue foreseeable future.