cc-zeroLehikoinen, Aleksi2025-04-292023-02-132023-02-13https://datakatalogi.helsinki.fi/handle/123456789/4416These data on bird species abundance and environmental variables were used in testing and comparing two different species distribution model validation methods that are applied to models which are used to predict the effects of climate change on species' distributions. The aim of the study was to investigate whether different validation methods give different results of the model's predictive performance and to demonstrate that validation methods based on measuring and validating a "static" pattern in distribution can assess model performance over-optimistically compared to methods based on measuring and validating a "change" in the distribution, which can assess the predictive performance more critically.Bayesian joint species distribution models (JSDMs)land bird monitoring schemeFennoscandialine transect methodavian point count surveysspecies range shiftsSpecies abundance distributionsData from: Time series of bird abundances, land cover and temperature from standardized breeding bird monitoring schemes (line transects and point count routes) from Norway, Sweden and Finland, for 1975-2016dataset