Giovedì mattina due sversamenti accidentali di colaticcio hanno provocato una grossa moria di pesci nei cantoni di Friburgo e Appenzello Esterno.
Finora nella Sonnaz ne sono stati raccolti un centinaio di chili, indica oggi in una nota la polizia friburghese, precisando che tutto l'ecosistema è stato colpito, da Chésopelloz al lago di Schiffenen. Il liquame è fuoriuscito da una vecchia canalizzazione difettosa, precisano le autorità, aggiungendo che sono intervenuti sia i pompieri che un'azienda specializzata.
Sempre giovedì si è verificato un incidente simile ad Appenzello Esterno. Anche in questo caso del colaticcio, proveniente da un allevamento di maiali a Schwellbrunn, è finito in un ruscello, il Glatt, provocando la morte di centinaia di trote fino ad Herisau, come ha precisato venerdì la polizia cantonale.
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