87 research outputs found

    Influence of fire prevention management strategies on the diversity of butterfly fauna in the eastern Pyrenees

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    Fire prevention management is becoming a necessity in many Mediterranean locations to regulate fire of natural or human origin. However, very few studies have determined the real effects of the strategies adopted on local fauna. Butterflies are sensitive to local changes and they can thus serve as indicators of environmental changes. Three different types of fire prevention management approaches in three different localities in the Eastern Pyrenees (France) were performed and the butterfly community composition was investigated. We show that of the 80 species of butterflies observed, 36 % can be considered as biological markers. An original objective treatment of data using hierarchical distance analysis combined with a neural network analysis (Self-Organizing Maps) was applied in this study. Our conclusions are that the overall number of species is maintained independently of the fire prevention type but that some important changes are observed among butterfly communities, with a clear reduction of the numbers of endemic/specialized species in favour of generalist ones for the two most drastic fire prevention management approaches studied here. The influence of such approaches is discussed on the basis of the conservation of Mediterranean species of Lepidoptera

    Papillon Battus Polydamas

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    Photographie illustrant un papillon de l'espèce Battus Polydamas, prise dans l'état de Morelos au Mexique

    Chenille du papillon Baronia Berviconis

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    Chenille du papillon Baronia Berviconis sur feuille d'acacia cochliacantha, leur arbre hĂ´te

    Papillon Parides Montezuma mâle

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    Photographie illustrant un papillon de l'espèce Parides Montezuma prise à la Sierra de Huelta, 1300m, dans l'état de Morelos au Mexique

    Papillon Battus Polydamas

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    Photographie illustrant un papillon de l'espèce Battus Polydamas, prise dans l'état de Morelos au Mexique

    Papillon Parides Photinus

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    Photographie illustrant un papillon de l'espèce Parides Photinus prise dans l'état de Morelos au Mexique

    Chenille du papillon Parides Photinus

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    Photographie illustrant une chenille du papillon Parides Photinus sur une feuille d'Aristoloche (ou Aristolochia) prise dans l'Ă©tat de Morelos, 1800m., au Mexique

    Lieu de vie du Papilio astyalus bajaensis

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    Photographie illustrant le lieu de vie du papillon "papilio astyalus bajaensis", Ă  la Sierra de Huautla, Cerro de Frio, 1250m. Mexique

    Chrysalide du papillon Battus Polydamas

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    Photographie illustrant une chrysalide du papillon Battus Polydamas

    Papilio garamas

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    Photographie illustrant le plus grand Papilio d'Amérique continentale : le Papilio garamas, très rare pour les collectionneurs. Ce papillon se trouve généralement dans les forêts humides d'altitude entre 1700 et 2500m environ
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