Phytoplankton response to weather fluctuations is a major focus in aquatic ecology. Will the lakes unaffected by serious human disturbances experience an annual increase in water chlorophyll, and what are the relative roles of temperature and precipitation? We conducted a multi-year (2015–2023) study of chlorophyll a in the littoral of Lake Hupujarvi, a small, shallow lake in European Russia. Temperature was identified as a positive driver of eutrophication, determining the interannual central tendency of chlorophyll, while precipitation had a negative effect primarily at the intra-seasonal level. The effect of temperature and precipitation was greater than that of nutrients.
Rizhinashvili et al. (Wed,) studied this question.