News

Permafrost soils store large quantities of frozen carbon and play an important role in regulating Earth’s climate. River greenhouse gas emissions are highest in areas where Siberian permafrost is actively thawing.

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.

Scientists from  IGB have analysed long-term data to prove that decreasing nitrogen in Berlin’s Lake Müggelsee is the key to reducing algal blooms in summer.

How do you find food when the food is never exactly present at the same place or time? Looking at wild guppies, the solution seems to be: being social and surrounding yourself with females.

Ulrike Berninger, Professor of Ecology at the University of Salzburg in Austria, has long been interested in mixotrophic plankton. This refers to the small organisms floating in water that combine the properties of both zooplankton and phytoplankton. Depending on the environmental situation or individual requirements, these unicellular organisms can either take up food particles via phagocytosis or carry out photosynthesis using sunlight.

Doerthe Tetzlaff, head of IGB's Ecohydrology department for one year, has been honoured with the American Geophysical Union's Fellowship – as the first ever female hydrologist in Germany.

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.