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Researchers have compiled and analyzed the key environmental factors that led to the mass development of the brackish water alga Prymnesium parvum in the Oder in the summer of 2022. The data synthesis shows how multiple stressors combined to allow an alga that normally thrives in stagnant salt water to proliferate en masse in a completely atypical habitat. In addition, a study on the quantitative impact on fish stocks in the Oder was published: compared to before the disaster, fish and mussel stocks have been decimated by more than half.

Buying fish, sausage or meat saves you from breaking a social taboo in some industrialized nations, especially when hunting and fishing are conducted for recreation. In a perspective article in Nature Sustainability, a research team from the natural and social sciences and environmental philosophy adds a new perspective to the topic of "recreational use of wild animals". The hypothesis is that an emotionally intense interaction between hunters or anglers and wild animals can create a particularly strong sense of responsibility,

When the weather is nice, it is time to go swimming in a lake, canoeing on a river or having a picnic by the water. The Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) shares do's and don'ts for environmentally friendly water fun – including some that are not so obvious.

The study in Nature Ecology & Evolution shows that shipping shipping has contributed to a significant loss of biodiversity of fish, mussels, snails and small crustaceans in European rivers in recent decades – and that the remaining animal communities are becoming increasingly homogeneous and river-typical species are being lost. Invasive species, on the other hand, are significantly increasing. 

Prolonged rainfall and storm events have caused rivers to burst their banks in parts of Germany. How can we better prepare for such extreme events, and what measures benefit both people and nature? We take a look at the state of the country’s rivers and floodplains and why it is worth rethinking flood protection.

Researchers from the Global Lake Ecosystem Observatory Network have now reviewed the factors that cause algal blooms to subside, the challenges in combating them, and how to deal with current and ongoing effects of climate change.

In a recent EU consultation, the IGB provided feedback on the use of so-called Renure fertilisers and recommended that the current nitrate limits should be strictly followed and that renure fertilisers should not benefit from any exemptions.

In order to protect lakes from chronic diseases and threatening conditions and to heal them, strategies similar to those used in human healthcare should be applied: Prophylaxis, regular screening, treatment and mitigation on a local to global scale.