Il Consiglio federale ha messo in consultazione una serie di norme per contrastare la presenza sempre maggiore di insetti o piante che possono causare danni alla salute. Fra queste specie figurano l’ambrosia e la zanzara tigre. Anche un crostaceo è nella lista nera.
Si tratterà innanzitutto di migliorare l’informazione alla popolazione sui rischi di una propagazione di queste specie. I servizi cantonali saranno chiamati a vegliare sull’applicazione delle misure di contenimento, in particolare per l’ambrosia.
La strategia avrà un prezzo: costerà non meno di 6 milioni di franchi all’anno per 10 anni. Alla cassa sono chiamati Confederazione e cantoni.
ats/mas
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