Vegetation plot network
I walked along an elevation gradient at four sites in Sweden to establish a network of 5x5-meter vegetation plots to record the presence and absence of pine trees. Abisko, Jäkkvik, Nordli, and Ånn were chosen because they are among the few locations in Fennoscandia that harbor a treeline composed of birch and pine trees. Between the summer of 2020 and 2021, I carried out data collection by annotating the presence and absence of pine, and for each observation, I annotated the geographical coordinates. A minimum distance of 150 meters was used between observations to ensure an accurate representation of the true distribution of pine. This fieldwork campaign yielded a total of 195 data points unevenly distributed between the four locations: Abisko (n=77), Jäkkvik (n=37), Nordli (n=43), Ånn (n=38). This dataset is now referred to as PLOT.