241 - Vall de Biert

Itinerari situat a l'espai protegit de les Muntanyes de Rocacorba, al municipi de Canet d'Adri, a la comarca del Gironès. Consta de 10 seccions, amb una llargada total de 1.098 metres i una alçada mitjana de 443 metres. Els comptatges es van iniciar l'any 2024.

Situat en una vall solitària sense pressió d’herbívors domèstics ni camps de conreu propers. Està ubicat en zones de margues, gresos i conglomerats sedimentaris cobertes de boscos, en els que dominen les alzines, seguides de roure martinenc i pi blanc, amb petites illes de prats (antics conreus abandonats fa desenes d’anys) en els quals s’hi fa una única sega anual durant l’hivern.

[Phenology]

[The bars show the weekly average butterfly abundance (calculated as the number of specimens per 1000 m) for the set of species recorded in the transect. Dots correspond to the weekly average number of species.]

[Habitats]

[The graph shows the relative cover of each habitat type in the whole transect. Since 2000, a botanical characterization has been performed for each itinerary every six years. For itineraries with more than one botanical characterization, you can change from one to another by clicking on the year of characterization.]

Secciones

[The map shows the transect route and the layout of the different sections. The background photograph corresponds to the 1:5000 orthophoto from the Cartographic Institute of Catalonia (ICGC).]

[Species occurring in this transect]

[Click to the Table to see the species list ordered by the abundance index average standardized at 100 m. Also, there is the trend each species follows in this itinerary. If you click the trend of any species you will enter Species by itinerary results. For more information about the index and trends calculation see Data analysis]

• [Icons]
• Especies (63)

[Illustrations by Richard Lewington from Tolman & Lewington (1997) Butterflies of Britain and Europe, translated and published in Spanish by Lynx Edicions.]