<ddi:DDIInstance xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:instance:3_3 http://ddialliance.org/Specification/DDI-Lifecycle/3.3/XMLSchema/instance.xsd" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ddi="ddi:instance:3_3" xmlns:r="ddi:reusable:3_3" xmlns:s="ddi:studyunit:3_3" xmlns:d="ddi:datacollection:3_3" xmlns:a="ddi:archive:3_3" xmlns:c="ddi:conceptualcomponent:3_3" xmlns:cm="ddi:comparative:3_3" xmlns:g="ddi:group:3_3" xmlns:l="ddi:logicalproduct:3_3" xmlns:p="ddi:physicaldataproduct:3_3" xmlns:pi="ddi:physicalinstance:3_3" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xml="http://www.w3.org/XML/1998/namespace" isMaintainable="true" scopeOfUniqueness="Agency">
  <r:URN>urn:ddi:se.researchdata:snd1124-1:1.0</r:URN>
  <r:Agency>SND</r:Agency>
  <r:ID>snd1124-1</r:ID>
  <r:Version>1.0</r:Version>
  <g:ResourcePackage>
    <r:URN>urn:ddi:se.researchdata:snd1124-1.ResourcePackage:2.0</r:URN>
    <r:OtherMaterialScheme>
      <r:URN>urn:ddi:se.researchdata:snd1124-1.OtherMaterialScheme:2.0</r:URN>
    </r:OtherMaterialScheme>
    <a:OrganizationScheme>
      <r:URN>urn:ddi:se.researchdata:snd1124-1.OrganizationScheme-0:2.0</r:URN>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:snd1124-1.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Department of Ecology, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Jerry</a:FirstGiven>
            <a:LastFamily>Skoglund</a:LastFamily>
            <a:FullName>
              <r:String>Jerry Skoglund</r:String>
            </a:FullName>
          </a:IndividualName>
          <a:ResearcherID>
            <a:TypeOfID>ORCID</a:TypeOfID>
            <a:ResearcherIdentification>0000-0002-1296-3723</a:ResearcherIdentification>
          </a:ResearcherID>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:snd1124-1.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Department of Ecology and Genetics, Uppsala University</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Håkan</a:FirstGiven>
            <a:LastFamily>Hytteborn</a:LastFamily>
            <a:FullName>
              <r:String>Håkan Hytteborn</r:String>
            </a:FullName>
          </a:IndividualName>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:snd1124-1.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Department of Physical Geography, Stockholm University</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Sven</a:FirstGiven>
            <a:LastFamily>Karlsson</a:LastFamily>
            <a:FullName>
              <r:String>Sven Karlsson</r:String>
            </a:FullName>
          </a:IndividualName>
        </a:IndividualIdentification>
      </a:Individual>
    </a:OrganizationScheme>
  </g:ResourcePackage>
  <s:StudyUnit>
    <r:URN>urn:ddi:se.researchdata:snd1124-1.StudyUnit:2.0</r:URN>
    <r:UserID typeOfUserID="datasetIdentifier">snd1124-1</r:UserID>
    <r:Citation>
      <r:Title>
        <r:String xml:lang="sv">Pollen analysis and 14C dating in outlining vegetation history of the primeval forest Fiby urskog, south Sweden</r:String>
        <r:String xml:lang="en">Pollen analysis and 14C dating in outlining vegetation history of the primeval forest Fiby urskog, south Sweden</r:String>
      </r:Title>
      <r:Creator>
        <r:CreatorReference>
          <r:URN>urn:ddi:se.researchdata:snd1124-1.Individual-0:2.0</r:URN>
          <r:TypeOfObject>Individual</r:TypeOfObject>
        </r:CreatorReference>
      </r:Creator>
      <r:Publisher>
        <r:PublisherName>
          <r:String xml:lang="sv">Sveriges lantbruksuniversitet</r:String>
          <r:String xml:lang="en">Swedish University of Agricultural Sciences</r:String>
        </r:PublisherName>
      </r:Publisher>
      <r:Publisher>
        <r:PublisherName>
          <r:String xml:lang="sv">Sveriges lantbruksuniversitet</r:String>
          <r:String xml:lang="en">Swedish University of Agricultural Sciences</r:String>
        </r:PublisherName>
      </r:Publisher>
      <r:PublicationDate>
        <r:SimpleDate>2019-10-01</r:SimpleDate>
      </r:PublicationDate>
      <r:InternationalIdentifier>
        <r:IdentifierContent>10.5878/3azc-7r86</r:IdentifierContent>
        <r:ManagingAgency controlledVocabularyAgencyName="DOI">DOI</r:ManagingAgency>
      </r:InternationalIdentifier>
    </r:Citation>
    <r:Abstract>
      <r:Content xml:lang="sv">Materialet avser rådata som legat till grund för en pollenstudie vars syfte är att beskriva vegetationshistorien i Fiby urskog, Uppland, de senaste ca 7000 åren. En ca 100 cm sedimentpropp togs i en central våtmark. Tonvikt ligger på de senaste ca 1000 åren där granens invandring och eventuell kulturpåverkan betonas särskilt. 14C-analys har använts vid åldersbestämning liksom landhöjningsdata, diatomanalys och stratigrafi.

Se engelska katalogsidan för mer information: https://snd.gu.se/en/catalogue/study/SND1124</r:Content>
      <r:Content xml:lang="en">The data file is the raw data collected in Fiby urskog, south Sweden in order to perform a paleoecological study, covering ca 7000 years, using pollen analysis, including spores, charcoal fragments and mineral particles from a small wetland basin. 14C dating, diatom analysis and shore displacement data aided in dating the vegetation succession. Indicators of human impact and other disturbances, during the last ca 1000 years, are given particular attention as well as Picea immigration.

Pollen was extracted from the sediment with a Russian peat corer (diameter 5 cm) every 2.5 cm down to ca 100 cm. Standard acetolysis method was used to extract pollen and spores. Treatment with hydrofluoric acid was performed on the lowermost part of the sediment to separate the large number of mineral particles.</r:Content>
    </r:Abstract>
    <r:Coverage>
      <r:TopicalCoverage>
        <r:URN>urn:ddi:se.researchdata:snd1124-1.TopicalCoverage:2.0</r:URN>
        <r:Subject xml:lang="en" controlledVocabularyID="1" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Natural Sciences</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="1" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Naturvetenskap</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="105" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Earth and Related Environmental Sciences</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="105" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Geovetenskap och relaterad miljövetenskap</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="106" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Biological Sciences</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="106" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Biologi</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="biota" controlledVocabularyName="INSPIRE topic categories">Biota</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="biota" controlledVocabularyName="INSPIRE topic categories">Biologi och ekologi</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="geoscientific-information" controlledVocabularyName="INSPIRE topic categories">Geoscientific Information</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="geoscientific-information" controlledVocabularyName="INSPIRE topic categories">Geovetenskap</r:Subject>
        <r:Keyword xml:lang="en" controlledVocabularyID="6622" controlledVocabularyName="GEMET">primary forest</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="6622" controlledVocabularyName="GEMET">primärskog</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="21706" controlledVocabularyName="EnvThes">paleoecology</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="21712" controlledVocabularyName="EnvThes">pollen analysis</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="21880" controlledVocabularyName="EnvThes">terrestrial</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="hb" controlledVocabularyName="INSPIRE Spatial Data Themes">Habitats and biotopes</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="hb" controlledVocabularyName="INSPIRE Spatial Data Themes">Naturtyper och biotoper</r:Keyword>
      </r:TopicalCoverage>
      <r:SpatialCoverage>
        <r:URN>urn:ddi:se.researchdata:snd1124-1.SpatialCoverage:2.0</r:URN>
        <r:Description>
          <r:Content xml:lang="en">Fiby urskog nature reserve is managed by the Administrative Board of Uppsala County. Fiby urskog is situated 16 km west of Uppsala, 5 km northwest of Vänge.</r:Content>
        </r:Description>
        <r:CountryCode>SE</r:CountryCode>
      </r:SpatialCoverage>
      <r:TemporalCoverage>
        <r:URN>urn:ddi:se.researchdata:snd1124-1.TemporalCoverage:2.0</r:URN>
        <r:ReferenceDate>
          <r:StartDate>-4999</r:StartDate>
          <r:EndDate>2000</r:EndDate>
        </r:ReferenceDate>
      </r:TemporalCoverage>
    </r:Coverage>
    <a:Archive>
      <r:URN>urn:ddi:se.researchdata:snd1124-1.Archive:2.0</r:URN>
      <a:ArchiveSpecific>
        <a:Item>
          <a:Access>
            <r:URN>urn:ddi:se.researchdata:snd1124-1.Archive-ArchiveSpecificType-AccessType:2.0</r:URN>
            <a:TypeOfAccess controlledVocabularyName="info:eu-repo-Access-Terms vocabulary">openAccess</a:TypeOfAccess>
          </a:Access>
          <a:DataFileQuantity>1</a:DataFileQuantity>
        </a:Item>
      </a:ArchiveSpecific>
    </a:Archive>
  </s:StudyUnit>
</ddi:DDIInstance>