Rainstorm regimes modulate cyanobacterial bloom dynamics in deep reservoirs: Synergistic effects of nutrient pulses and hydrological perturbations.

ABSTRACT: Global expansion of cyanobacterial harmful algal blooms, driven by anthropogenic nutrient loading and climate change, poses escalating threats to water security. While altered precipitation regimes are recognized as critical climate multipliers, their hierarchical controls on cyanobacterial harmful algal bloom dynamics remain poorly quantified, particularly in stratified reservoirs. Here, we integrate a 60-yr (1961-2020) trend analysis of rainfall extremes with 4 yr (2017-2020) of high-frequency monitoring of hydrology, nutrients, and phytoplankton through manual sampling and autonomous buoys in Lake Qiandaohu, a deep subtropical reservoir vital for drinking water in eastern China. Using Mann-Kendall trend analysis, random forest, and partial least squares path modeling, we elucidate the h

SUBMITTER: Qiu Y 

PROVIDER: S-EPMC12803737 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature