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Descripción
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| A graph theory approach for the assessment of connectivity between river basins is proposed and tested within the otters¿ (Lutra lutra) range in Italy. The otter is a semiaquatic species and one of the most endangered mammals in Italy. Recent local surveys indicate that the otter is recovering its original distribution range after the strong decline of the `90. Therefore identifi cation of corridors throughout which the species could potentially expand constitutes a priority for its conservation. The proposed connectivity assessment approach summarizes the role of suitable areas (graph nodes) and minimum cost paths (graph links) for maintaining or improving landscape connectivity between river basins. In order to identify the graph nodes and links we used a two classes fi ne scale Habitat Suitability map and a multiple minimum cost paths scheme of the Italian catchments where the species actually occurs and where it is likely to expand in the short-medium term. We used the probability of connectivity index (PC) that integrates habitat suitability concept with dispersal probabilities between habitat patches. We identifi ed those habitats and pathways that most contribute to the overall connectivity and evaluate the effectiveness and potential improvement of actual landscape for maintaining and expanding the distribution range of otters | |
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Internacional
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Si |
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Nombre congreso
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2nd European Congress of Conservation Biology "Conservation biology and beyond: from science to practice" |
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Tipo de participación
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960 |
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Lugar del congreso
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Praga |
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Revisores
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Si |
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ISBN o ISSN
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978-80-213-1961-5 |
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DOI
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Fecha inicio congreso
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01/09/2009 |
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Fecha fin congreso
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05/09/2009 |
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Desde la página
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254 |
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Hasta la página
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254 |
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Título de las actas
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Book of Abstracts 2nd European Congress of Conservation Biology |