"Column label";"Column description" eventID;"Identification of the sampling event (n=103) (this key is used in the occurrence/abundance file (see below)" eventDate;"Sampling event date" locationID;"Sampling time (not location) identification number (n=5)" samplingSizeValue;"Sampling area (in m2) used to measure the number of P. oceanica shoots per metre square. This value was used to express our abundance data in number of colony per metre square." sampleSizeUnit;"Unit used to express abundance (number of colony per metre square)" minimumDepthInMeters;"Depth of sampling locations (metres)" decimalLatitude;"Latitude of sampling location (decimal)" decimalLongitude;"Longitude of sampling location (decimal)" waterBody;"Name of sampled water area (Revellata Bay, Mediterranean Sea)" locality;"Name of sampled locality (Calvi, Corsica, France)" countryCode;"International code of country" samplingProtocol;"Url link to the web site (open repository of Liège University) to access the original paper explaining the protocol used to obtain this data set"