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− nitrate: NTRA (µmol/L)  
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            <gmd:MD_DigitalTransferOptions>
               <gmd:onLine>
                  <gmd:CI_OnlineResource>
                     <gmd:linkage gco:nilReason="missing" xsi:type="lan:PT_FreeText_PropertyType">
                        <gmd:URL>http://wwz.ifremer.fr/dcsmm</gmd:URL>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">http://wwz.ifremer.fr/dcsmm</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:linkage>
                     <gmd:protocol>
                        <gco:CharacterString>WWW:LINK</gco:CharacterString>
                     </gmd:protocol>
                     <gmd:name>
                        <gco:CharacterString>site internet Ifremer dédié à la Directive Cadre Stratégie pour le Milieu Marin</gco:CharacterString>
                     </gmd:name>
                     <gmd:description gco:nilReason="missing" xsi:type="lan:PT_FreeText_PropertyType">
                        <gco:CharacterString/>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR"/>
                           </gmd:textGroup>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#EN">The Ifremer website dedicated to the Marine Strategy Framework Directive</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:description>
                     <gmd:function>
                        <gmd:CI_OnLineFunctionCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#CI_OnLineFunctionCode"
                                                   codeListValue="information"/>
                     </gmd:function>
                  </gmd:CI_OnlineResource>
               </gmd:onLine>
               <gmd:onLine>
                  <gmd:CI_OnlineResource>
                     <gmd:linkage gco:nilReason="missing" xsi:type="lan:PT_FreeText_PropertyType">
                        <gmd:URL>http://www.ifremer.fr/sextant/fr/web/dcsmm/123_repartition_spatio-temporellle_nutriments</gmd:URL>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">http://www.ifremer.fr/sextant/fr/web/dcsmm/123_repartition_spatio-temporellle_nutriments</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:linkage>
                     <gmd:protocol>
                        <gco:CharacterString>WWW:LINK</gco:CharacterString>
                     </gmd:protocol>
                     <gmd:name>
                        <gco:CharacterString>carthothèque DCSMM</gco:CharacterString>
                     </gmd:name>
                     <gmd:description xsi:type="lan:PT_FreeText_PropertyType">
                        <gco:CharacterString>Répartition spatio-temporelle des nutriments</gco:CharacterString>
                        <gmd:PT_FreeText>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#FR">Répartition spatio-temporelle des nutriments</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                           <gmd:textGroup>
                              <gmd:LocalisedCharacterString locale="#EN">Spatio-temporal distribution of nutrients</gmd:LocalisedCharacterString>
                           </gmd:textGroup>
                        </gmd:PT_FreeText>
                     </gmd:description>
                     <gmd:function>
                        <gmd:CI_OnLineFunctionCode codeListValue="information"
                                                   codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#CI_OnLineFunctionCode"/>
                     </gmd:function>
                  </gmd:CI_OnlineResource>
               </gmd:onLine>
            </gmd:MD_DigitalTransferOptions>
         </gmd:transferOptions>
      </gmd:MD_Distribution>
  </gmd:distributionInfo>
  <gmd:dataQualityInfo>
      <gmd:DQ_DataQuality>
         <gmd:scope>
            <gmd:DQ_Scope>
               <gmd:level>
                  <gmd:MD_ScopeCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_ScopeCode"
                                    codeListValue="dataset"/>
               </gmd:level>
            </gmd:DQ_Scope>
         </gmd:scope>
         <gmd:lineage>
            <gmd:LI_Lineage>
               <gmd:statement xsi:type="lan:PT_FreeText_PropertyType">
                  <gco:CharacterString>Les données sont issues de bases personnelles de scientifiques (données non encore enregistrées dans les bases de référence, ex: campagnes Modycot) et de bases de données nationales et 
internationales (ICES, SDN, QUADRIGE2) qui représentent la majeure partie des données. Il y a cependant dans ces bases des données non validées ou sous moratoire (ces données ne sont 
donc pas utilisées dans l'étude).</gco:CharacterString>
               </gmd:statement>
            </gmd:LI_Lineage>
         </gmd:lineage>
      </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
  <gmd:metadataConstraints>
      <gmd:MD_SecurityConstraints>
         <gmd:classification>
            <gmd:MD_ClassificationCode codeList="http://standards.iso.org/iso/19115/resources/Codelists/cat/codelists.xml#MD_ClassificationCode"
                                       codeListValue="unclassified"/>
         </gmd:classification>
      </gmd:MD_SecurityConstraints>
  </gmd:metadataConstraints>
</gmd:MD_Metadata>