Phenology of Phytoplankton Blooms in a Trophic Lake Observed from Long-Term MODIS Data

• DOI: 10.1021/acs.est.8b06887
• Publication Date: 2019-02-18T18:45:42Z
• Authors: Kun Shi; Yunlin Zhang; Yibo Zhang; Na Li; Boqiang Qin; Guangwei Zhu; Yongqiang Zhou
• Keywords: Biogeochemical Cycle; Bloom; Lake ecosystem

Phytoplankton phenology critically affects elements biogeochemical cycles, ecosystem structure, and productivity. However, our understanding about the phenological process driving mechanism is still very limited due to shortage of long-term observation data. We used all available daily MODIS-Aqua data from 2003 2017 determine bloom start dates (BSDs) in a typical trophic lake (Lake Taihu) investigate how phytoplankton BSDs respond climate change environmental factors. The results indicate that have advanced 29.9 days for entire Lake Taihu 2017. Spatially, an earlier was recorded northern bays littoral regions than center open water. Air temperature, wind speed, N/P ratio (N, total nitrogen; P, phosphorus) were three important factors affecting phenology. Multiple linear correlation showed air Spring could explain 59.9% variability Taihu. This study provides quantitative assessment shifts elucidates inter-relationship between parameters factors, thus improving on potential impact eutrophication ecosystems. starting lasting longer are consistent with expected effects warming aquatic recent decades, which will bring new challenges algal management eutrophic