March 17, 2025|
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|9 months agoClimate Change Threatens Lake Geneva Fish Population
Rising water temperatures and increasing stagnation in Lake Geneva pose serious risks to local fish species, according to environmental experts.
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Generated IllustrationKey Takeaways
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- Lake Geneva is experiencing reduced winter water mixing due to warming temperatures
- The lake has gone 13 consecutive winters without complete mixing, a historic record
- Oxygen levels in deep waters have dropped to 2.4 mg per litre, below the critical threshold of 4 mg
- Fish species like fera are being forced to spawn at greater depths due to warming
By The Numbers
7.8°C
Minimum average temperature in top 10 meters
1.5°C
Temperature increase compared to 1991-2020 reference period
110 meters
Current water mixing depth
They Said
"Little by little, the lake's temperature is increasing"
"If there is less and less oxygen in the water, there is less and less viable space for living organisms"