Modern changes in the ecosystem of Lake Onego with climate warming
We have shown the changes in the ecosystem of Lake Onego with climate warming over the past 30 years. Due to climate warming in winter, the river runoﬀ increases, as well as the ﬂow of allochtonic substances into the lake. With the increased runoﬀ of the Shuya River, the main tributary of the Petrozavodskaya Guba (Bay), there is an additional inﬂux of iron and phosphorus to the lake combined with the humus substances. Deep-water benthic communities in the lake become depressed. Therefore, in the past three decades the role of climate warming in the aquatic ecosystem has increased in comparison with anthropogenic impacts, which diﬀers signifcantly from the changes in previous decades.
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