The monitoring of the small-mammals in Doñana was initiated in 2011 as part of the Monitoring Program of Natural Resources and Processes. The aim was to obtain a temporal and continuous series of data in the abundance and distribution of small mammals species to analyze the evolution of their numbers. The study is divided in two periods (2011-2016 and 2017-2021) with different sampling effort and different treatments applied in the study plots, since the study belong two different projects (ICTS-RBD 2011-2021, LIFE-ADAPTAMED 2017-2021).