Intertidal macroalgal biomass data in Porsangerfjorden, northern Norway in July 2022

A survey for macroalgal fresh biomass was performed in the high, mid and low intertidal zone at five sites along the fjord axis of 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.