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The data presented are based on status, distribution and numbers of the Dipper, Cinclus cinclus, within the Regional Park of the Gola Rossa and Frasassi area (Umbria, Italy). The Dipper feeds especially on larvae and nymphs of aquatic benthic macroinvertebrates such as the Trichoptera, Ephemeroptera and Plecoptera, used as biotic indicators with the “Extended Biotic Index” method.
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