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            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Polycyclic Aromatic Hydrocarbon (measured);
Units: μg/kg dry weight;
Observation Category: laboratory analysis;
Sampling Instrument: Gas Chromatography/Mass Spectrometry (GC-MS);
Sampling and Analyzing Method: Polycyclic aromatic hydrocarbons (PAHs) were extracted with a mixed solvent solution (hexane: dichloromethane, 1:1) using an ASE 300 accelerated solvent extractor. The sample was concentrated and purified in a chromatographic column packed with sulfite, silica, alumina and granulated copper. Purified extracts were then analyzed with a gas chromatograph coupled to a mass selective detector, Agilent Technologies GC-MS 6890N/5973MS, equipped with an autosampler and quadrupole electronic impact.</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: FISH SPECIES (measured);
Units: n/a;
Observation Category: in situ;
Sampling Instrument: DEMERSAL TRAWL;
Sampling and Analyzing Method: Fishes were collected using demersal longline sampling gear.</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Liver Anomalies (measured);
Units: n/a;
Observation Category: in situ;
Sampling Instrument: Demersal longline;
Sampling and Analyzing Method: Red snapper samples were caught in Campeche Bay and Yucatan Shelf using demersal longline sampling gear. At each station, a 544 kg test monofilament mainline was deployed, with a mean of 433 baited hooks per set. Livers of red snappers were examined for hepatic parenchymal changes. The liver is classified as H = healthy and D = damaged, and the description of the anomaly is provided within the data file.</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
  <gmd:metadataMaintenance>
    <gmd:MD_MaintenanceInformation>
      <gmd:maintenanceAndUpdateFrequency>
        <gmd:MD_MaintenanceFrequencyCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded">asNeeded</gmd:MD_MaintenanceFrequencyCode>
      </gmd:maintenanceAndUpdateFrequency>
      <gmd:maintenanceNote>
        <gco:CharacterString>Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.</gco:CharacterString>
      </gmd:maintenanceNote>
      <gmd:contact>
        <gmd:CI_ResponsibleParty>
          <gmd:organisationName>
            <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
          </gmd:organisationName>
          <gmd:role>
            <gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
          </gmd:role>
        </gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation id="AMS">
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_beac">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>trawl</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>trawl</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>A fishing net that is dragged behind a boat. A wide range of demersal (bottom) or pelagic (mid-water) species of fish are taken by this fishing method which entails one or a pair of vessels towing a large bag-shaped net either along the seafloor or in mid-water.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:platform>
        <gmi:MI_Platform id="plat_aa0f">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>JUSTO SIERRA</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>JUSTO SIERRA</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
      <gmi:platform>
        <gmi:MI_Platform id="plat_b0ff">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>WEATHERBIRD II</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>Flag: United States of America
Vessel Type: Research Vessel
IMO:
DOB: 198201
Institution: Bermuda Biological Station for Research Inc
Former Names: WEATHERBIRD (1989); AUNT BEA
Citations: 1. Lloyd's Register of Ships 2006-2007; 2. The Universal Licensing System of the U.S. Federal Communications Commission</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
    </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>