<codeBook xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xsi:schemaLocation="ddi:codebook:2_5 http://www.ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" xmlns="ddi:codebook:2_5">
  <docDscr>
    <citation>
      <titlStmt>
        <titl xml:lang="sv">Halter av kvicksilver i blad i förhållande till kväve och LMA</titl>
        <parTitl xml:lang="en">Concentrations of leaf mercury in relation to nitrogen and LMA</parTitl>
        <IDNo agency="SND">2025-122-1</IDNo>
        <IDNo agency="DOI">https://doi.org/10.5878/hwa8-vn68</IDNo>
      </titlStmt>
      <prodStmt>
        <producer xml:lang="en" abbr="SND">Swedish National Data Service</producer>
        <producer xml:lang="sv" abbr="SND">Svensk nationell datatjänst</producer>
      </prodStmt>
      <holdings URI="https://doi.org/10.5878/hwa8-vn68">Landing page</holdings>
    </citation>
  </docDscr>
  <stdyDscr>
    <citation>
      <titlStmt>
        <titl xml:lang="sv">Halter av kvicksilver i blad i förhållande till kväve och LMA</titl>
        <parTitl xml:lang="en">Concentrations of leaf mercury in relation to nitrogen and LMA</parTitl>
        <IDNo agency="SND">2025-122-1</IDNo>
        <IDNo agency="DOI">https://doi.org/10.5878/hwa8-vn68</IDNo>
      </titlStmt>
      <rspStmt>
        <AuthEnty xml:lang="en" affiliation="Department of Biological &amp; Environmental Sciences, University of Gothenburg">Pleijel, Håkan</AuthEnty>
        <AuthEnty xml:lang="sv" affiliation="Institutionen för biologi och miljövetenskap, Göteborgs universitet">Pleijel, Håkan</AuthEnty>
      </rspStmt>
      <prodStmt>
        <grantNo xml:lang="en" agency="Formas">2017-00696</grantNo>
        <grantNo xml:lang="sv" agency="Formas">2017-00696</grantNo>
      </prodStmt>
      <distStmt>
        <distrbtr xml:lang="en" abbr="SND" URI="https://snd.se">Swedish National Data Service</distrbtr>
        <distrbtr xml:lang="sv" abbr="SND" URI="https://snd.se">Svensk nationell datatjänst</distrbtr>
        <distDate xml:lang="en" date="2025-11-10" />
      </distStmt>
      <verStmt>
        <version elementVersion="1" elementVersionDate="2025-11-10" />
      </verStmt>
      <holdings URI="https://doi.org/10.5878/hwa8-vn68">Landing page</holdings>
    </citation>
    <stdyInfo>
      <subject>
        <keyword xml:lang="en" vocab="GCMD" vocabURI="https://gcmd.nasa.gov/kms/concept/a54dbc4f-c136-4648-9797-db00e62fe22b">SPECIES BIOACCUMULATION</keyword>
        <keyword xml:lang="en" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/5154">mercury</keyword>
        <keyword xml:lang="sv" vocab="GEMET" vocabURI="http://www.eionet.europa.eu/gemet/concept/5154">kvicksilver</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/22162">leaf size</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/22160">leaf nitrogen concentration</keyword>
        <keyword xml:lang="en" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/20832">nitrogen</keyword>
        <keyword xml:lang="sv" vocab="EnvThes" vocabURI="http://vocabs.lter-europe.net/EnvThes/20832">kväve</keyword>
        <keyword xml:lang="en" vocab="INSPIRE Spatial Data Themes" vocabURI="http://inspire.ec.europa.eu/theme/lc">Land cover</keyword>
        <keyword xml:lang="sv" vocab="INSPIRE Spatial Data Themes" vocabURI="http://inspire.ec.europa.eu/theme/lc">Landtäcke</keyword>
        <topcClas xml:lang="en" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota">Biota</topcClas>
        <topcClas xml:lang="sv" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota">Biologi och ekologi</topcClas>
        <topcClas xml:lang="en" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/environment">Environment</topcClas>
        <topcClas xml:lang="sv" vocab="INSPIRE topic categories" vocabURI="http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/environment">Miljö</topcClas>
      </subject>
      <abstract xml:lang="en" contentType="abstract">Data include concentrations of mercury and nitrogen in leaves and needles as well as values for LMA (dry leaf mass per leaf area) for 17 tree species.</abstract>
      <abstract xml:lang="sv" contentType="abstract">Data omfattar halter av kvicksilver och kväve i blad och barr samt värden för LMA (torrvikt av bladmassa per bladyta) för 17 trädarter</abstract>
      <sumDscr>
        <collDate xml:lang="en" date="2018-06-25" event="start">2018-06-25</collDate>
        <collDate xml:lang="en" date="2020-09-21" event="end">2020-09-21</collDate>
        <nation xml:lang="en" abbr="SE">Sweden</nation>
        <nation xml:lang="sv" abbr="SE">Sverige</nation>
        <dataKind xml:lang="en">Numeric</dataKind>
      </sumDscr>
    </stdyInfo>
    <method>
      <dataColl>
        <collMode xml:lang="en">Leaves and needles were collected from a minimum of three trees per species in several sites in the Gothenburg Region, south-west Sweden. They were dried and grinded. Then they were analysed for the content of mercury and nitrogen. In addition a fraction of the collected leaves/needles were used to determine leaf mass (dry weight) per area (LMA).<concept vocab="DDI Mode of Collection" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/ModeOfCollection/5.0.0?languageVersion=en-5.0.0">Leaves and needles were collected from a minimum of three trees per species in several sites in the Gothenburg Region, south-west Sweden. They were dried and grinded. Then they were analysed for the content of mercury and nitrogen. In addition a fraction of the collected leaves/needles were used to determine leaf mass (dry weight) per area (LMA).</concept></collMode>
        <collMode xml:lang="sv">Blad och barr samlades in från minst tre träd av varje art i Göteborgsregionen, sydvästra Sverige. De torkades och maldes. Därefter analyserades de med avseende på innehåll av kvicksilver och kväve. Dessutom användes en del av de insamlade bladen/barren för att bestämma bladmassa (torrvikt) per bladyta (LMA).<concept vocab="DDI Mode of Collection" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/ModeOfCollection/5.0.0?languageVersion=sv-5.0.0">Blad och barr samlades in från minst tre träd av varje art i Göteborgsregionen, sydvästra Sverige. De torkades och maldes. Därefter analyserades de med avseende på innehåll av kvicksilver och kväve. Dessutom användes en del av de insamlade bladen/barren för att bestämma bladmassa (torrvikt) per bladyta (LMA).</concept></collMode>
        <collMode xml:lang="en">Measurements and tests<concept vocab="DDI Mode of Collection" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/ModeOfCollection/5.0.0?languageVersion=en-5.0.0">Measurements and tests</concept></collMode>
        <collMode xml:lang="sv">Mätningar och tester<concept vocab="DDI Mode of Collection" vocabURI="https://vocabularies.cessda.eu/v2/vocabularies/ModeOfCollection/5.0.0?languageVersion=sv-5.0.0">Mätningar och tester</concept></collMode>
      </dataColl>
    </method>
    <dataAccs>
      <useStmt>
        <restrctn xml:lang="en">Access to data through SND. Data are freely accessible.</restrctn>
        <restrctn xml:lang="sv">Åtkomst till data via SND. Data är fritt tillgängliga.</restrctn>
        <conditions elementVersion="info:eu-repo-Access-Terms vocabulary">openAccess</conditions>
      </useStmt>
    </dataAccs>
    <othrStdyMat />
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