@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix nalt: <https://lod.nal.usda.gov/nalt/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <https://lod.nal.usda.gov/naltv#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://lod.nal.usda.gov/naltv#Topic>
  rdfs:label "Topic"@en ;
  a owl:Class .

nalt:215650
  skos:related nalt:17265, nalt:213771 ;
  skos:prefLabel "oligotrophication"@en, "oligotrofización"@es ;
  skos:inScheme <https://lod.nal.usda.gov/nalt> ;
  a <https://lod.nal.usda.gov/naltv#Topic>, skos:Concept ;
  ns0:marc001 "70591" ;
  skos:broader nalt:2715 ;
  dc:modified "2014-11-17"^^xsd:date ;
  dc:created "2014-05-05"^^xsd:date .

<https://lod.nal.usda.gov/nalt>
  rdfs:label "NALT Full"@en ;
  a skos:ConceptScheme .

nalt:17265
  skos:prefLabel "nutrientes"@es, "nutrients"@en ;
  a ns0:Chemical, skos:Concept ;
  skos:related nalt:215650 .

nalt:213771
  skos:prefLabel "ecosistemas acuáticos"@es, "aquatic ecosystems"@en ;
  a ns0:Topic, skos:Concept ;
  skos:related nalt:215650 .

nalt:2715
  skos:prefLabel "degradación ambiental"@es, "environmental degradation"@en ;
  a ns0:Topic, skos:Concept ;
  skos:narrower nalt:215650 .