During an expedition to Alaska Interior and the southern Seward Peninsula in summer 2024, full panoramic images of the sampled vegetation plots were captured for documentation purposes. The images were taken with a 360 camera (Insta360 R, 1 inch sensor) from the centre of the vegetation plots. At each, three images were recorded holding the camera at a fixed position at breast height (1.3 m above ground) standing at different positions. The images were stitched in the supplied software to 360x180 panorama images (6528x3264, raw images). These were aligned in Hugin Panorama Software (https://hugin.sourceforge.io/) and humans or other artificial objects masked. The final panorama was blended and gaps or human shadow errors healed with GIMP resynthesizer plugin (https://github.com/bootchk/resynthesizer) and exported into one image with 7776x3888 pixels.

We thank Justus Heintsch who processed image data during an internship