News | IGB

14 July 2026

Water temperatures above 30 degrees Celsius

In the second half of June 2026, record-breaking heat was recorded not only on land but also in bodies of water. On 29 June 2026, for example, a water temperature of 30.2 °C was measured in Berlin’s Müggelsee – the highest temperature ever recorded for this lake. Near the shore, the temperature even reached 32.7 °C. But how do extremely high temperatures affect the lake and its wildlife? Researchers at the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) provide an overview.

16 January 2025

press release

Phosphorus pollution in Lake Arendsee: researchers recommend countermeasures

A new IGB Dossier shows options for action for policy-makers and authorities at the nutrient-polluted Lake Arendsee.

4 April 2024

focus

Water in the soil, but not in the groundwater

Although lots of rain has reached the ground, the groundwater has not yet returned to the state it was in before the dry year of 2018. Moreover, in 2023, a year with high precipitation, a particularly large amount of water evaporated due to high temperatures. So, no reason to sound the all-clear?

15 December 2022

insight

"To researchers, this river is like a textbook"

Alexander Sukhodolov has been carrying out a research on the Tagliamento River in the north-east of Italy for almost a decade and a half. Scientists are fascinated by this river because it has a number of features that makes it a unique object of study. IGB operates a River Lab at the Tagliamento, where researchers study river hydrodynamics and its effect and interactions with aquatic biota.

28 July 2022

short news

Back at last: stoneworts return to lake Müggelsee

Low-growing species such as stoneworts were last sighted in the Müggelsee over a century ago. Now, after 20 years of intensive mapping and diving surveys, not just one but three of these desirable species of underwater vegetation have been found.