The authors investigated the role of hydrological connectivity dynamics on biogeochemistry in the Oder river-floodplain system through a multi-proxy approach to quantify water sources and ages, evaporation losses, water quality, surface water connectivity via remote sensing and sub-surface connectivity via geophysical surveys. This is important to sustain vulnerable wetlands. 

The paper reviews existing knowledge on how aquatic reptiles, especially freshwater crocodilians and turtles, respond to light pollution and discusses existing mitigation strategies. Learning from measures that have proven effective for related taxa, such as sea turtles, could be useful in setting up initial measures to protect freshwater reptiles against light pollution.

The largest global assessment of freshwater animals on the IUCN Red List of Threatened Species to date has revealed that 24 per cent of the world’s freshwater fish, dragonfly, damselfly, crab, crayfish and shrimp species are at high risk of extinction.