L'equivalente di ottanta campi da calcio è tornato utilizzabile a Chalais in Vallese, nella Valle del Reno presso Coira e in Bregaglia nei Grigioni, grazie al lavoro di... 87 capre, 26 asini e 35 bovini, che con l'aiuto di agricoltori, scolari, volontari e giovani in servizio civile hanno contribuito a salvaguardare la biodiversità.
Il 95% dei prati secchi del paese è scomparso nell'ultimo secolo in Svizzera, ricorda Pro Natura, divorato da alberi e arbusti visto che la pratica di tenerli puliti e fare fieno non è più redditizia. Con il progetto Allegra Geissenpeter, l'organizzazione ha voluto contrastare questa tendenza. Il bilancio presentato è quello di dieci anni di sforzi. I siti prescelti oggi ospitano un terzo di specie vegetali in più e il doppio di specie animali.
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