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How do the conditions set in this year's LakeLab experiment, i.e. skyglow and brownification, affect macrophytes and periphytons? This question is investigated by Ivana Trbojević from the University of Belgrade. The Serbian researcher spends a good four weeks at Lake Stechlin to strengthen the LakeLab team.

Fish are an important element in the food web of lakes. This also applies to the experimental enclosures of the LakeLab. However, in this case, the number of fish must be controlled so that the results from the individual cylinders can be compared with each other. Because fish from the lake repeatedly jump into the enclosures, all fish must first be removed with nets from the cylinders before starting a new experiment. Today, 5 small perch were released into each enclosure for this year's LakeLab experiment.

As energy supplier and stimulus of the internal clock, light is of fundamental importance to plants and animals. This also applies to fish and microscopic organisms in lakes. Like other species, they have adapted to the day-night rhythm during evolution. But what happens if a lake is illuminated by artificial lighting at night, or if not enough light penetrates into the water during the day? These questions are examined during this year's summer experiment at the Lake Lab.

Six tanks filled with water of River Spree and exposed to differently-colored artificial light: this is the core element of an art installation shown from July 5th to September 2nd 2018 in Berlin-Charlottenburg.

11 scientists and 300 kilometers of river: impressions of three weeks of sampling in the entire river network of the Vjosa in Albania.

The relationship between energy efficiency in the food web and size distribution allows a better and more direct understanding of biological processes and disturbances that impact aquatic ecosystems.

Thomas Mehner, limnologist and fish ecologist at IGB, is sharing his ideas for a redefinition of the international specialist society SIL, which is devoted to limnology and the management of freshwaters.

Pesticides can cause big problems in ecosystems. That is the result of a new discussion paper of German National Academy of Sciences Leopoldina, in which effects of pesticides and options for action are explained based on recent scientific results.