@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . rdf:type skos:Concept ; dce:identifier "SDN:P07::48CPRT6U" ; dc:date "2013-11-28 13:37:58.0" ; dc:identifier "SDN:P07::48CPRT6U" ; dc:replaces ; pav:authoredOn "2013-11-28 13:37:58.0" ; pav:hasCurrentVersion ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:sameAs , , ; owl:versionInfo "1" ; skos:altLabel "" ; skos:definition "\"Production of carbon\" means the production of biomass expressed as the mass of carbon which it contains. Gross primary production is the rate of synthesis of biomass from inorganic precursors by autotrophs (\"producers\"), for example, photosynthesis in plants or phytoplankton. The producers also respire some of this biomass and the difference is \"net_primary_production\". \"Productivity\" means production per unit area. The phrase \"expressed_as\" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A."@en ; skos:notation "SDN:P07::48CPRT6U" ; skos:note "accepted"@en ; skos:prefLabel "gross_primary_productivity_of_biomass_expressed_as_carbon"@en ; skos:related .