Ecologists find strong evidence of fishing down the food web in freshwater lake

Research by ecologists shows strong evidence in a freshwater lake of 'fishing down the food web' – the deliberate shift away from top predatory fish on the food chain to smaller species closer to the base. While the effect has historically been observed almost exclusively in marine ecosystems and ocean fisheries, there has been little evidence of the effect in freshwater ecosystems.

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Fungicides as an underestimated hazard for freshwater organisms

Large amounts of fungicides, used in agriculture, leak into nearby surface waters. The effects of it on aquatic organisms are poorly understood and not specifically addressed in the EU regulatory frameworks with respect to the protection of surface waters. Scientists have found that pollution by fungicides can have unforeseen but far-reaching consequences for the functioning of aquatic systems — like indirect effects on the development of algal blooms.

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