Common Small Mammals Monitoring Programme - SEMICE
The SEMICE programme was launched in 2008, and is aimed at obtaining indices of relative abundance of highly detectable common small mammal species using live-trapping plots; relatively small 6 × 6 trapping grids with commercial traps (Sherman and Longworth) are set in the field for three consecutive nights twice a year (spring/summer and autumn). Individuals captured are marked with permanent ear/tags in rodents and with fur clips in the case of shrews. Starting with 20 stations, the network has increased thoroughout the years, given the support of Catalan/Spanish Administrations, field professionals, and volunteers, reaching a hundred of active stations in 2021. Indices of relative abundance are the base of our monitoring objectives, and these values are translated into population trends with adequate time-series analyses. Combining abundance with environmental data (climate, land-use, predators, etc.) will help understanding population trends of small mammal species in the light of global change.