1. Inhalt
  2. Navigation
  3. Weitere Inhalte
  4. Metanavigation
  5. Suche
  6. Choose from 30 Languages

Eco@Africa

Lake Constance too clean for its own good

Sewage treatment keeps Lake Constance clean, but also starves it of phosphate, which is an important nutrient for plants. The result is fewer and smaller fish, so fishermen are having to think again.