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    <ns1:acronym xml:lang="en">BUP</ns1:acronym>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
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    <ns1:acronym xml:lang="en">NC</ns1:acronym>
    <ns2:definition xml:lang="en">N content</ns2:definition>
    <ns1:attribute>N content</ns1:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <rdfs:label xml:lang="en">N content</rdfs:label>
    <ns1:entity>Kelp</ns1:entity>
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    <ns1:acronym xml:lang="en">HC</ns1:acronym>
    <ns2:definition xml:lang="en">H content</ns2:definition>
    <rdfs:label xml:lang="en">H content</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:attribute>H content</ns1:attribute>
    <ns1:entity>Kelp</ns1:entity>
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    <rdfs:subClassOf>
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    </rdfs:subClassOf>
    <rdfs:subClassOf>
      <ns3:Restriction rdf:nodeID="Nb1fe14089d204237a3b89225ee43f93b">
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    <ns2:definition xml:lang="en">Done by UC Davis or UConn </ns2:definition>
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      </ns3:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">CHN content - Measurement</rdfs:label>
  </ns3:Class>
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    <ns1:entity>Kelp</ns1:entity>
    <rdfs:label xml:lang="en">Cr content</rdfs:label>
    <ns1:acronym xml:lang="en">CRC</ns1:acronym>
    <ns2:definition xml:lang="en">Cr content</ns2:definition>
    <ns1:attribute>Cr content</ns1:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
  </ns3:Class>
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    <ns1:attribute>I content</ns1:attribute>
    <ns1:entity>Kelp</ns1:entity>
    <ns2:definition xml:lang="en">I content</ns2:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:acronym xml:lang="en">IC</ns1:acronym>
    <rdfs:label xml:lang="en">I content</rdfs:label>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000222">
    <rdfs:label xml:lang="en">Blade thickness</rdfs:label>
    <ns1:entity>Blade</ns1:entity>
    <ns1:attribute>Thickness</ns1:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Morphological"/>
    <ns1:acronym xml:lang="en">BT</ns1:acronym>
    <ns2:definition xml:lang="en">Blade thickness</ns2:definition>
  </ns3:Class>
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    <ns2:definition xml:lang="en">Fouling area</ns2:definition>
    <ns1:attribute>Fouling area</ns1:attribute>
    <ns1:acronym xml:lang="en">FOA</ns1:acronym>
    <ns1:entity>Kelp</ns1:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biotic_stress"/>
    <rdfs:label xml:lang="en">Fouling area</rdfs:label>
  </ns3:Class>
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    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:acronym xml:lang="en">CLC</ns1:acronym>
    <rdfs:label xml:lang="en">Cl content</rdfs:label>
    <ns1:attribute>Cl content</ns1:attribute>
    <ns1:entity>Kelp</ns1:entity>
    <ns2:definition xml:lang="en">Cl content</ns2:definition>
  </ns3:Class>
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    <rdfs:label xml:lang="en">O content</rdfs:label>
    <ns2:definition xml:lang="en">O content</ns2:definition>
    <ns1:attribute>O content</ns1:attribute>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:entity>Kelp</ns1:entity>
    <ns1:acronym xml:lang="en">OC</ns1:acronym>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000271">
    <rdfs:label xml:lang="en">Dry weight of subplot - Measurement</rdfs:label>
    <rdfs:subClassOf>
      <ns3:Restriction rdf:nodeID="N5f35dd3b672042da8f7c710e614fac3b">
        <ns3:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000273"/>
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      </ns3:Restriction>
    </rdfs:subClassOf>
    <ns2:definition xml:lang="en">Direct measurement of the dry weight of a 1cm subsample of a plot</ns2:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000036">
    <ns2:definition xml:lang="en">Maturity</ns2:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Phenological"/>
    <ns1:entity>Kelp</ns1:entity>
    <rdfs:label xml:lang="en">Maturity</rdfs:label>
    <ns1:attribute>Maturity</ns1:attribute>
    <ns1:acronym xml:lang="en">M</ns1:acronym>
  </ns3:Class>
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    <ns1:acronym xml:lang="en">PBC</ns1:acronym>
    <ns2:definition xml:lang="en">Pb content</ns2:definition>
    <ns1:entity>Kelp</ns1:entity>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:attribute>Pb content</ns1:attribute>
    <rdfs:label xml:lang="en">Pb content</rdfs:label>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000168">
    <ns1:entity>Kelp</ns1:entity>
    <ns2:definition xml:lang="en">Ga content</ns2:definition>
    <ns1:acronym xml:lang="en">GAC</ns1:acronym>
    <ns1:attribute>Ga content</ns1:attribute>
    <rdfs:label xml:lang="en">Ga content</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
  </ns3:Class>
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    <rdfs:subClassOf>
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        <ns3:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000224"/>
      </ns3:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Stipe composition - Measurement</rdfs:label>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <ns2:definition xml:lang="en">Composition of the stipe (either hollow if there is any hollow portion, or solid if completely solid)</ns2:definition>
  </ns3:Class>
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    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <ns2:definition xml:lang="en">Direct measurement of the dry weight of the entire plot</ns2:definition>
    <rdfs:label xml:lang="en">Dry weight of plot - Measurement</rdfs:label>
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    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:label xml:lang="en">Subplot blade count - Measurement</rdfs:label>
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      </ns3:Restriction>
    </rdfs:subClassOf>
    <ns2:definition xml:lang="en">Direct count of the number of blades in a 1cm subsample of a plot</ns2:definition>
  </ns3:Class>
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    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Computation"/>
    <ns2:definition xml:lang="en">Calculation of the percent dry weight of a tissue sample</ns2:definition>
    <rdfs:subClassOf>
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      </ns3:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Percent dry weight of tissue sample - Computation</rdfs:label>
  </ns3:Class>
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      </ns3:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Dry weight of combined subplots - Measurement</rdfs:label>
    <ns2:definition xml:lang="en">Direct measurement of the dry weight of all sampled 1cm subplots</ns2:definition>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000041">
    <ns2:definition xml:lang="en">Done by New Jersey Feed Labs </ns2:definition>
    <rdfs:label xml:lang="en">Carbohydrate / fiber content - Measurement</rdfs:label>
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  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000211">
    <ns2:definition xml:lang="en">Direct measurement of the towel-dried weight of a tissue sample</ns2:definition>
    <rdfs:label xml:lang="en">Towel-dried weight of tissue sample - Measurement</rdfs:label>
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    </rdfs:subClassOf>
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  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000198">
    <ns2:definition xml:lang="en">Visual estimation of percent maturity at harvest</ns2:definition>
    <rdfs:subClassOf>
      <rdf:Description rdf:about="https://cropontology.org/rdf/Estimation">
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      </rdf:Description>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Maturity - Estimation</rdfs:label>
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    </rdfs:subClassOf>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000104">
    <ns2:definition xml:lang="en">Cu content</ns2:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <ns1:acronym xml:lang="en">CUC</ns1:acronym>
    <ns1:entity>Kelp</ns1:entity>
    <rdfs:label xml:lang="en">Cu content</rdfs:label>
    <ns1:attribute>Cu content</ns1:attribute>
  </ns3:Class>
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    <rdfs:subClassOf>
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    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">Stipe weight - Measurement</rdfs:label>
    <ns2:definition xml:lang="en">Direct measurement of the weight of the stipe</ns2:definition>
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    <rdfs:subClassOf>
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      </ns3:Restriction>
    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Numerical"/>
    <rdfs:label xml:lang="en">sq cm</rdfs:label>
    <rdfs:subClassOf>
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        <ns3:someValuesFrom rdf:resource="https://cropontology.org/rdf/CO_360:0000209"/>
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      </ns3:Restriction>
    </rdfs:subClassOf>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000032">
    <rdfs:subClassOf>
      <rdf:Description rdf:about="https://cropontology.org/rdf/Physiological">
        <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Trait"/>
      </rdf:Description>
    </rdfs:subClassOf>
    <ns1:attribute>Growth rate</ns1:attribute>
    <ns2:definition xml:lang="en">Growth rate </ns2:definition>
    <ns1:acronym xml:lang="en">GR</ns1:acronym>
    <rdfs:label xml:lang="en">Growth rate</rdfs:label>
    <ns1:entity>Kelp</ns1:entity>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000176">
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Biochemical"/>
    <rdfs:label xml:lang="en">In content</rdfs:label>
    <ns1:acronym xml:lang="en">INC</ns1:acronym>
    <ns1:entity>Kelp</ns1:entity>
    <ns2:definition xml:lang="en">In content</ns2:definition>
    <ns1:attribute>In content</ns1:attribute>
  </ns3:Class>
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    <rdfs:subClassOf>
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    <rdfs:subClassOf>
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    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Numerical"/>
    <rdfs:label xml:lang="en">kg</rdfs:label>
  </ns3:Class>
  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000208">
    <rdfs:label xml:lang="en">Presence of sori - Measurement</rdfs:label>
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    <rdfs:subClassOf>
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    <ns2:definition xml:lang="en">Presence or absence of sori</ns2:definition>
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  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000269">
    <ns2:definition xml:lang="en">Direct measurement of the wet weight of the entire plot</ns2:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:label xml:lang="en">Wet weight of plot - Measurement</rdfs:label>
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    </rdfs:subClassOf>
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    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:label xml:lang="en">Blade width - at 10cm - Measurement</rdfs:label>
    <ns2:definition xml:lang="en">Direct width measurement (at 10 cm) of randomly sampled blades</ns2:definition>
    <rdfs:subClassOf>
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    </rdfs:subClassOf>
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  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000185">
    <rdfs:subClassOf>
      <rdf:Description rdf:about="https://cropontology.org/rdf/Nominal">
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      </rdf:Description>
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    <rdfs:subClassOf>
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      </ns3:Restriction>
    </rdfs:subClassOf>
    <rdfs:label xml:lang="en">stipe composition</rdfs:label>
  </ns3:Class>
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    <rdfs:subClassOf>
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    </rdfs:subClassOf>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <ns2:definition xml:lang="en">Presence or absence of bryozoan</ns2:definition>
    <rdfs:label xml:lang="en">Presence of bryozoan - Measurement</rdfs:label>
  </ns3:Class>
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    <ns2:definition xml:lang="en">Done by New Jersey Feed Labs </ns2:definition>
    <rdfs:subClassOf rdf:resource="https://cropontology.org/rdf/Measurement"/>
    <rdfs:label xml:lang="en">Moisture content - Measurement</rdfs:label>
    <rdfs:subClassOf>
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  <ns3:Class rdf:about="https://cropontology.org/rdf/CO_360:0000172">
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