@prefix envthes: <http://vocabs.lter-europe.net/EnvThes/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .

envthes:
  skos:prefLabel "EnvThes"@en ;
  a skos:ConceptScheme .

envthes:20143
  skos:inScheme envthes: ;
  a skos:Concept ;
  skos:scopeNote "MS Academic Keywords"@en ;
  skos:definition "[David Choquenot] Aerial survey is a rapid technique for obtaining information about the abundance and distribution offeral pigs. To obtain estimates of actual pig abundance from such surveys, visibility biasassociated with counts of pig groups must be estimated and accounted for. A double-count surveytechnique was used to estimate habitat-specific visibility bias associated with counts of pigsobtained from standardised helicopter surveys conducted in the semi-arid rangelands..."@en ;
  skos:broader envthes:20118 ;
  skos:prefLabel "aerial survey"@en ;
  dc:creator <https://orcid.org/0000-0003-2195-3997> .

envthes:20118
  skos:prefLabel "survey"@en ;
  a skos:Concept ;
  skos:narrower envthes:20143 .