Department of Algology and Mycology, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, 90-237 Lodz, Poland.
Department of Geology and Geomorphology, Faculty of Geographical Sciences, University of Lodz, Narutowicza 88, 90-139 Lodz, Poland.
Int J Environ Res Public Health. 2022 Jun 7;19(12):6990. doi: 10.3390/ijerph19126990.
Algal blooms are an emerging problem. The massive development of phytoplankton is driven partly by the anthropogenic eutrophication of aquatic ecosystems and the expansion of toxic cyanobacteria in planktonic communities in temperate climate zones by the continual increase in global temperature. Cyanobacterial harmful algal blooms (CyanoHABs) not only disturb the ecological balance of the ecosystem, but they also prevent the use of waterbodies by humans. This study examines the cause of an unusual, persistent bloom in a recreational, flow-through reservoir; the findings emphasize the role played by the river supplying the reservoir in the formation of its massive cyanobacterial bloom. Comprehensive ecosystem-based environmental studies were performed, including climate change investigation, hydrochemical analysis, and bio-assessment of the ecological state of the river/reservoir, together with monitoring the cyanobacteria content of phytoplankton. Our findings show that the persistent and dominant biomass of was related to the N/P ratio, while the presence of and was associated with the high-temperature end electric conductivity of water. Together with the increase in global temperature, the massive and persistent cyanobacterial bloom appears to be maintained by the inflow of biogenic compounds carried by the river and the high electric conductivity of water. Even at the beginning of the phenomenon, the reservoir water already contained cyanobacterial toxins, which excluded its recreational use for about half the year.
藻华是一个新出现的问题。浮游植物的大量繁殖部分是由于水生态系统的人为富营养化以及全球温度持续升高导致温带到热带浮游生物群落中有毒蓝藻的扩张。蓝藻有害藻华（CyanoHABs）不仅扰乱了生态系统的生态平衡，还阻止了人类对水体的利用。本研究探讨了一个休闲、流动水库中异常、持续藻华的原因；研究结果强调了为水库供水的河流在其大规模蓝藻藻华形成中所起的作用。进行了全面的基于生态系统的环境研究，包括气候变化调查、水化学成分分析以及河流/水库生态状况的生物评估，同时监测浮游植物中蓝藻的含量。我们的研究结果表明，的持续和占主导地位的生物量与 N/P 比有关，而和的存在与水的高温末端电导率有关。随着全球温度的升高，由河流携带的生物成因化合物和水的高电导率似乎维持了大规模和持续的蓝藻藻华。甚至在现象开始之初，水库水就已经含有蓝藻毒素，这使得它大约半年的时间都不能用于娱乐。
