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<thesaurus
  dc:URI='http://rs.gbif.org/vocabulary/dwc/degree_of_establishment/'
  dc:relation='https://dwc.tdwg.org/terms/#dwc:degreeOfEstablishment'
  dc:title='Darwin Core Degree of Establishment Vocabulary'
  dc:issued='2022-02-02'
  xmlns='http://rs.gbif.org/thesaurus/'
  xmlns:dc='http://purl.org/dc/terms/'
  xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
  xsi:schemaLocation='http://rs.gbif.org/thesaurus/  http://rs.gbif.org/schema/thesaurus.xsd'>

  <concept
    dc:identifier='native'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d001'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d001'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Not transported beyond limits of native range.'
    comments='Considered native and naturally occurring. See also &quot;category A&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='native (category A)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='captive'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d002'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d002'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Individuals in captivity or quarantine (i.e., individuals provided with conditions suitable for them, but explicit measures of containment are in place).'
    comments='See also &quot;category B1&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='captive (category B1)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='cultivated'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d003'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d003'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Individuals in cultivation (i.e., individuals provided with conditions suitable for them, but explicit measures to prevent dispersal are limited at best).'
    comments='Examples include gardens, parks and farms. See also &quot;category B2&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='cultivated (category B2)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='released'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d004'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d004'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Individuals directly released into novel environment.'
    comments='For example, fish stocked for angling, birds for hunting. See also &quot;category B3&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='released (category B3)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='failing'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d005'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d005'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Individuals released outside of captivity or cultivation in a location, but incapable of surviving for a significant period.'
    comments='For example, frost-tender plants sown or planted in a cold climate. See also &quot;category C0&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='failing (category C0)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='casual'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d006'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d006'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Individuals surviving outside of captivity or cultivation in a location with no reproduction.'
    comments='Trees planted in the wild for forestry or ornament may come under this category. See also &quot;category C1&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='casual (category C1)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='reproducing'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d007'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d007'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Individuals surviving outside of captivity or cultivation in a location. Reproduction is occurring, but population not self-sustaining.'
    comments='Offspring are produced, but these either do not survive or are not fertile enough to maintain the population. See also &quot;category C2&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='reproducing (category C2)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='established'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d008'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d008'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Individuals surviving outside of captivity or cultivation in a location. Reproduction occurring, and population self-sustaining.'
    comments='The population is maintained by reproduction, but is not spreading. See also &quot;category C3&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='established (category C3)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='colonising'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d009'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d009'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Self-sustaining population outside of captivity or cultivation, with individuals surviving a significant distance from the original point of introduction.'
    comments='The population is maintained by reproduction and is spreading. See also &quot;category D1&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='colonising (category D1)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='invasive'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d010'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d010'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Self-sustaining population outside of captivity or cultivation, with individuals surviving and reproducing a significant distance from the original point of introduction.'
    comments='The population is maintained by reproduction, is spreading, and its progeny are also reproducing and spreading. See also &quot;category D2&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='invasive (category D2)' xml:lang='en'/>
    </preferred>
  </concept>

  <concept
    dc:identifier='widespreadInvasive'
    dc:URI='http://rs.tdwg.org/dwcdoe/values/d011'
    dc:subject='http://rs.tdwg.org/dwcdoe/values/d011'
    dc:relation='https://doi.org/10.3897/biss.3.38084'
    dc:issued='2020-10-13'
    dc:description='Fully invasive species, with individuals dispersing, surviving and reproducing at multiple sites across a spectrum of habitats and geographic range.'
    comments='See also &quot;category E&quot; in Blackburn et al. 2011. https://doi.org/10.1016/j.tree.2011.03.023'>
    <preferred>
      <term dc:source='Darwin Core' dc:title='widespread invasive (category E)' xml:lang='en'/>
    </preferred>
  </concept>

</thesaurus>
