Variable;Description;Units;Observation
SampleID;Sample ID corresponding to ASV tables;;"Hotmix = Hotmix samples from different depths (until bathypelagic); MalaSizeFrac = Malaspina size-fractionated samples from different depths (until bathypelagic); MalaSurf = Malasina surface samples; MalaVP = Malaspina vertical profiles samples from different depths (until bathypelagic); MalaDeep = Malaspina deep samples (only bathypelagic)"
Cruise;Cruise in which the sample was obtained;;
Date;Date that the sample was obtained;DD-mmm-YY;
Latitude;Latitude in Decimal degrees (DD);degrees;
Longitude;Longitude in Decimal degrees (DD);degrees;
Filter_size;Filter size-fraction from where the DNA sample was obtained;;
Depth;Depth from where the sample was obtained;meters (m);
layer;Ocean layer from where the sample was obtained;;"EPI = Epipelagic; MES = Mesopelagic; BAT = Bathypelagic"
layer_2;Ocean layer from where the sample was obtained but separating the EPI into SRF and DCM;;"SRF = Surface; DCM = Deep-chlorophyll maxima; MES = Mesopelagic; BAT = Bathypelagic"
OceanRegion;Category separating the Open Ocean and the Mediterranean Sea samples;;
OceanBasin;Ocean basin from where the sample was obtained. The Mediterranean Sea is divided into Western (WMS) and Eastern (EMS) basins.;;"NAO = North Atlantic Ocean; SAO = South Atlantic Ocean; SPC = South Pacific Ocean; NPC = North Pacific Ocean; IO = Indian Ocean; WMS = Western Mediterranean Sea; EMS = Eastern Mediterranean Sea"
OceanBasin_2;Ocean basin from where the sample was obtained. The Mediterranean Sea is divided into sub-basins.;;
Temperature;Temperature;°C;
Salinity;Salinity;;
Fluorescence;Fluorescence – proxy of chlorophyll a;;
NO3;Nitrate (NO3−) concentration;µmol L-1;
PO4;Phosphate (PO43−) concentration;µmol L-1;
SiO2;Silica (SiO2) concentration;µmol L-1;
S.obs;Mean species richness (observed);;
Shannon;Species diversity estimated by Shannon index;;
Pielou;Pielou index of species equitability;;
PD;Phylogenetic diversity;;
Microbial_Abund;Microbial abundances by flow cytometry (Synechococcus + Prochlorococcus + Heterotrophic Bacteria + Picoeukaryotes);cells mL-1;
Bact_activity;Bacterial activity (by leucine incorporation);(pmol Leu L-1 h-1);