Macroalgal biomass data collected at the subtidal fringe level at Guovolesuolu in Porsangerfjorden, northern Norway in July 2022

Macroalgal fresh biomass was collected in the subtidal fringe level at Guovolesuolu in Porsangerfjorden in July 2022. This dataset is part of a space-for-time comparison between low-Arctic Porsangerfjorden and high-Arctic Kongsfjorden. The aim was to document differences in macroalgal biomass and community composition between two Arctic fjord systems at different stages of cryosphere loss to understand how benthic vegetation in the high-Arctic will likely develop in the future.