26 - Vallgrassa

Itinerari situat al cor del Massís del Garraf, al municipi de Begues. Consta de 8 seccions, una longitud total de 1.017 metres i es troba a una alçada mitjana de 317 metres. Els comptatges es van iniciar l'any 1997 i malgrat algunes interrupcions d'anys sense dades es continua fent en l'actualitat.

La zona es troba en ple domini de brolles mediterrànies de romaní i margalló, i en una localitat on s'ha donat un clar procés de tancament de l'hàbitat, amb una reducció dràstica dels prats mediterranis com timonedes. Recorre també trams rocallosos.

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.

Sections

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
• Species (65)

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