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Di: jM
A Basilea Campagna si è concluso il primo inventario completo delle formiche. È il primo inventario di questo genere in Svizzera. E i ricercatori, aiutati da una cinquantina di volontari, hanno censito quasi 1'800 formicai.
La specie interessata è quella della "formica dei boschi", protetta a livello federale dal 1966.
Protetta, ma ancora poco conosciuta a livello locale. Eppure la formica di bosco è utile perché disperde i semi, regola i parassiti e ossigena il suolo.
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