R script and data for the analysis of sponges and asteroids abundances and sponges biomass

Script and necessary data (subtransects size , organisms counts, size and mass) to compute the abundance of sponges and asteroids and the biomass of sponges on the 2007 (PS69/724-1) and 2011 (PS77/253-1) ROV transects. The Zip-archive contains a more detailled description of the script content and the various steps to obtain the data.