Variable,Definition realm,"M for marine, N for non-marine groups" taxon,Taxonomic group rank,Taxonomic rank total.sp,Total estimated species richness min.total,Minimum estimated total species richness max.total,Maximum estimated total species richness described.sp,Number of taxonomically described species WoRMS2014.sp,Number of valid described species in WoRMS 2014 (marine groups only) min.described,Minimum number of described species (non-marine groups only) max.described,Maximum number of described species (non-marine groups only) p.known,Proportion of total species so far described (described.sp / total.sp) min.pknown,"Minimum value for p.known (described.sp / max.total for marine groups, min.described / max.total for non-marine groups)" max.pknown,"Maximum value for p.known (described.sp / min.total for marine groups, max.described / min.total for non-marine groups)" description.rate,"Taxonomic description status: Lo, Med and Hi indicate p.known <1/3, 1/3 ² p.known < 2/3, and p.known > 2/3 respectively" assessed.sp,Total number of species assessed by the IUCN dd.sp,Number of species assessed as Data Deficient (DD) assessed.sp.nodd,Number of species assessed and not DD assessment.rate,"Level of IUCN assessment, Hi = assessed.sp.nodd > 2/3 * described.sp (WoRMS2014.sp for Marine groups) or assessed.sp > 90 and 90 > 0.01 * described sp (WoRMS2014.sp for Marine groups); Lo = all other groups" threatened.sp,"Number of threatened species (IUCN categories CR, EN, VU)" extinct.sp,"Number of extinct species (IUCN categories EX, EW)" threatened.extinct.sp,"Number of threatened or extinct species, threatened.sp + extinct.sp" non.threatened.sp,"Number of assessed, non-threatened species (assessed.sp.nodd Ð threatened.extinct.sp)" p.assessed,"Proportion of described species assessed by the IUCN and not DD, assessed.sp.nodd / described.spa" p.threatened,"Proportion of described species listes as threatened, threatened.sp / described.spa" p.extinct,"Proportion of described species listes as extinct, extinct.sp / described.spa" p.threatened.assessed,"Proportion of IUCN assessed, non-DD species listed as threatened or extinct, threatened.extinct.sp / assessed.sp.nodd"