D018504Concepts & IdeasPhenomenaG16.500.275.157.240N06.230.124.240N06.230.150.225Ecological Systems, Closedprns:meshDescriptorUIMeSH DescriptorUIprns:meshSemanticGroupNameMeSH semantic group nameprns:meshTreeNumberMeSH tree numberrdf:typetyperdfs:labellabelConcept