“…variation that are independent of these patterns (e.g. seasonality underlying temporal trends), and that could mask them to the point that they are not detectable anymore (Keogh et al, 2011). Uncovering and characterizing such kind of sources is key for the reliability and accuracy of the monitoring data, as well as for the comparability of the results in studies carried out at different time points and sites (Sáez et al, 2012;García-Seoane et al, 2018).…”