<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:2025-338:1</r:URN>
  <r:Agency>SND</r:Agency>
  <r:ID>2025-338</r:ID>
  <r:Version>1</r:Version>
  <g:ResourcePackage>
    <r:URN>urn:ddi:se.researchdata:2025-338.ResourcePackage:2.0</r:URN>
    <r:OtherMaterialScheme>
      <r:URN>urn:ddi:se.researchdata:2025-338.OtherMaterialScheme:2.0</r:URN>
    </r:OtherMaterialScheme>
    <a:OrganizationScheme>
      <r:URN>urn:ddi:se.researchdata:2025-338.OrganizationScheme-0:2.0</r:URN>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Department for Crop Production Ecologu, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Rebecca C.</a:FirstGiven>
            <a:LastFamily>Örnberg</a:LastFamily>
            <a:FullName>
              <r:String>Rebecca C. Örnberg</r:String>
            </a:FullName>
          </a:IndividualName>
          <a:ResearcherID>
            <a:TypeOfID>ORCID</a:TypeOfID>
            <a:ResearcherIdentification>0009-0004-6322-9096</a:ResearcherIdentification>
          </a:ResearcherID>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Department of Crop Production Ecology, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Alexander</a:FirstGiven>
            <a:LastFamily>Menegat</a:LastFamily>
            <a:FullName>
              <r:String>Alexander Menegat</r:String>
            </a:FullName>
          </a:IndividualName>
          <a:ResearcherID>
            <a:TypeOfID>ORCID</a:TypeOfID>
            <a:ResearcherIdentification>0000-0002-0735-3293</a:ResearcherIdentification>
          </a:ResearcherID>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Department of Crop Produktion Ecology, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Darwin T.</a:FirstGiven>
            <a:LastFamily>Hickman</a:LastFamily>
            <a:FullName>
              <r:String>Darwin T. Hickman</r:String>
            </a:FullName>
          </a:IndividualName>
          <a:ResearcherID>
            <a:TypeOfID>ORCID</a:TypeOfID>
            <a:ResearcherIdentification>0000-0003-4757-4813</a:ResearcherIdentification>
          </a:ResearcherID>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.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>Alistair G.</a:FirstGiven>
            <a:LastFamily>Auffret</a:LastFamily>
            <a:FullName>
              <r:String>Alistair G. Auffret</r:String>
            </a:FullName>
          </a:IndividualName>
          <a:ResearcherID>
            <a:TypeOfID>ORCID</a:TypeOfID>
            <a:ResearcherIdentification>0000-0002-4190-4423</a:ResearcherIdentification>
          </a:ResearcherID>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Swedish Species Information Centre, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Johan</a:FirstGiven>
            <a:LastFamily>Nilsson</a:LastFamily>
            <a:FullName>
              <r:String>Johan Nilsson</r:String>
            </a:FullName>
          </a:IndividualName>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Division of IT, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Gunnar</a:FirstGiven>
            <a:LastFamily>Nyborg</a:LastFamily>
            <a:FullName>
              <r:String>Gunnar Nyborg</r:String>
            </a:FullName>
          </a:IndividualName>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Swedish Species Information Centre, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Sofie</a:FirstGiven>
            <a:LastFamily>Wikberg</a:LastFamily>
            <a:FullName>
              <r:String>Sofie Wikberg</r:String>
            </a:FullName>
          </a:IndividualName>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Swedish Botanical Society</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Jan Y.</a:FirstGiven>
            <a:LastFamily>Andersson</a:LastFamily>
            <a:FullName>
              <r:String>Jan Y. Andersson</r:String>
            </a:FullName>
          </a:IndividualName>
        </a:IndividualIdentification>
      </a:Individual>
      <a:Individual>
        <r:URN>urn:ddi:se.researchdata:2025-338.Individual-0:2.0</r:URN>
        <r:UserAttributePair>
          <r:AttributeKey>affiliation</r:AttributeKey>
          <r:AttributeValue>Swedish Species Information Centre, Swedish University of Agricultural Sciences</r:AttributeValue>
        </r:UserAttributePair>
        <a:IndividualIdentification>
          <a:IndividualName>
            <a:FirstGiven>Sebastian</a:FirstGiven>
            <a:LastFamily>Sundberg</a:LastFamily>
            <a:FullName>
              <r:String>Sebastian Sundberg</r:String>
            </a:FullName>
          </a:IndividualName>
          <a:ResearcherID>
            <a:TypeOfID>ORCID</a:TypeOfID>
            <a:ResearcherIdentification>0000-0001-7966-9097</a:ResearcherIdentification>
          </a:ResearcherID>
        </a:IndividualIdentification>
      </a:Individual>
    </a:OrganizationScheme>
  </g:ResourcePackage>
  <s:StudyUnit>
    <r:URN>urn:ddi:se.researchdata:2025-338.StudyUnit:2.0</r:URN>
    <r:UserID typeOfUserID="datasetIdentifier">2025-338</r:UserID>
    <r:UserID typeOfUserID="principalRegistrationNumber">SLU.vpe.2026.5.2.IÄ-1</r:UserID>
    <r:Citation>
      <r:Title>
        <r:String xml:lang="sv">Data för: A National-scale Dataset of Arable Plant Abundance from Citizen Science Surveys of Swedish Field Margins</r:String>
        <r:String xml:lang="en">Data for: A National-scale Dataset of Arable Plant Abundance from Citizen Science Surveys of Swedish Field Margins</r:String>
      </r:Title>
      <r:Creator>
        <r:CreatorReference>
          <r:URN>urn:ddi:se.researchdata:2025-338.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>2026-01-26</r:SimpleDate>
      </r:PublicationDate>
      <r:InternationalIdentifier>
        <r:IdentifierContent>10.5878/xnzn-7k56</r:IdentifierContent>
        <r:ManagingAgency controlledVocabularyAgencyName="DOI">DOI</r:ManagingAgency>
      </r:InternationalIdentifier>
    </r:Citation>
    <r:Abstract>
      <r:Content xml:lang="sv">Projektet Åkerogräsinventeringen, genomfört av Sveriges lantbruksuniversitet och Svenska botaniska föreningen 2020-2023, syftade till att kartlägga förekomsten av åkerogräs på svensk åkermark. Presenterat här är tvättad och filtrerad data från inventeringen. Datasetet och projektet är utförligt beskrivet i den tillhörande artikeln "A national-scale dataset of arable plant abundance from citizen science surveys of Swedish field margins". (OBS! Notera att artikeln är en beskrivning av datan, och inte en studie.)

Insamlingsmetod: Volontärer från Svenska botaniska föreningen inventerade åkerkanter i en 100 * 1 m sträcka, placerad i den plöjda delen i kanten av åkern. Samtliga växter noterades och deras antal uppskattades. Åkrar i hela Sverige blev inventerade. 
Datatvätt: Datan har kollats och felaktigheter har korrigerats i samtal med inventerarna. I de fall osäkerheter kvarstått har dessa inventeringssträckor tagits bort i denna tvättade version av datasetet. 

Excelfilen består av två flikar. Den första ger viktig information om datan och hur den bör användas. Den andra innehåller datan. Datafilen består av 24 kolumner och 7364 rader. Notera att alla koordinater är angivna enligt WGS84.</r:Content>
      <r:Content xml:lang="en">The project "Åkerogräsinventeringen" (the inventory of arable plants), done by the Swedsh University of Agricultural Sciences and the Swedish Botanical Society 2020-2023, aimed to map out the occurrences of arable plants in Swedish fields. Here, cleaned and filtered data from the survey is presented. The dataset and the project are thoroughly described in the article "A national-scale dataset of arable plant abundance from citizen science surveys of Swedish field margins" (Note that this article is a data description, and not a study). 

Collection method: Volunteers from the Swedish Botanical Society surveyed a 100*1 m transect, along the ploughed part of the field margin. All plants in the transect were noted and their abundance estimated. Fields from all of Sweden were surveyed. 
Data cleaning: The data have been checked and errors corrected in communication with the surveyors. In the cases where uncertainties remained, the sites have been removed in this cleaned and filtered version of the dataset. 

The excel file consists of two tabs. The first tab provides important information on the proper usage of the data. The second tabs contains the data. The data file consists of 24 columns and 7364 rows. Note that all coordinates are given according to WGS84.</r:Content>
    </r:Abstract>
    <r:Coverage>
      <r:TopicalCoverage>
        <r:URN>urn:ddi:se.researchdata:2025-338.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="10607" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Botany</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="10607" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Botanik</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="10611" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Ecology</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="10611" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Ekologi</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="4" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Agricultural and Veterinary sciences</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="4" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Lantbruksvetenskap och veterinärmedicin</r:Subject>
        <r:Subject xml:lang="en" controlledVocabularyID="40101" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Agricultural Science</r:Subject>
        <r:Subject xml:lang="sv" controlledVocabularyID="40101" controlledVocabularyName="Standard för svensk indelning av forskningsämnen 2025">Jordbruksvetenskap</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:Keyword xml:lang="en" controlledVocabularyID="10633" controlledVocabularyName="GEMET">plant population</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="10633" controlledVocabularyName="GEMET">växtbestånd</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="11869" controlledVocabularyName="GEMET">plant biology</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="11869" controlledVocabularyName="GEMET">växtbiologi</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="2463" controlledVocabularyName="GEMET">ecological stocktaking</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="2463" controlledVocabularyName="GEMET">ekologisk inventering</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="8910" controlledVocabularyName="GEMET">plant ecology</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="8910" controlledVocabularyName="GEMET">växtekologi</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="9280" controlledVocabularyName="GEMET">weed</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="9323" controlledVocabularyName="GEMET">wild plant</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="9323" controlledVocabularyName="GEMET">vild växt</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="21710" controlledVocabularyName="EnvThes">plant ecology</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="21710" controlledVocabularyName="EnvThes">växtekologi</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="20115" controlledVocabularyName="EnvThes">vegetation survey</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="82" controlledVocabularyName="EnvThes">population ecology</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="82" controlledVocabularyName="EnvThes">populationsekologi</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:Keyword xml:lang="en" controlledVocabularyID="sd" controlledVocabularyName="INSPIRE Spatial Data Themes">Species distribution</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="sd" controlledVocabularyName="INSPIRE Spatial Data Themes">Arters utbredning</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_459" controlledVocabularyName="AGROVOC">annual weeds</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_5697" controlledVocabularyName="AGROVOC">perennial weeds</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_92381" controlledVocabularyName="AGROVOC">agroecology</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_33955" controlledVocabularyName="AGROVOC">biodiversity conservation</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_18948" controlledVocabularyName="AGROVOC">arable land</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_37977" controlledVocabularyName="AGROVOC">agrobiodiversity</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_2467" controlledVocabularyName="AGROVOC">ecology</r:Keyword>
        <r:Keyword xml:lang="sv" controlledVocabularyID="c_2467" controlledVocabularyName="AGROVOC">ekologi</r:Keyword>
        <r:Keyword xml:lang="en" controlledVocabularyID="c_f888df97" controlledVocabularyName="AGROVOC">citizen science</r:Keyword>
      </r:TopicalCoverage>
      <r:SpatialCoverage>
        <r:URN>urn:ddi:se.researchdata:2025-338.SpatialCoverage:2.0</r:URN>
        <r:CountryCode>SE</r:CountryCode>
      </r:SpatialCoverage>
      <r:TemporalCoverage>
        <r:URN>urn:ddi:se.researchdata:2025-338.TemporalCoverage:2.0</r:URN>
        <r:ReferenceDate>
          <r:StartDate>2020</r:StartDate>
          <r:EndDate>2023</r:EndDate>
        </r:ReferenceDate>
      </r:TemporalCoverage>
    </r:Coverage>
    <r:AnalysisUnit controlledVocabularyID="AnalysisUnit" controlledVocabularyAgencyName="DDI Alliance">Individual<r:ControlledVocabularyURN>http://rdf-vocabulary.ddialliance.org/cv/AnalysisUnit/2.1.3/2dd4472</r:ControlledVocabularyURN></r:AnalysisUnit>
    <r:AnalysisUnitsCovered>
      <r:String xml:lang="en">Individual</r:String>
      <r:String xml:lang="sv">Individ</r:String>
    </r:AnalysisUnitsCovered>
    <d:DataCollection>
      <r:URN>urn:ddi:se.researchdata:2025-338.DataCollection:2.0</r:URN>
      <d:CollectionEvent>
        <r:URN>urn:ddi:se.researchdata:2025-338.CollectionEvent:2.0</r:URN>
        <d:DataCollectorOrganizationReference>
          <r:URN>urn:ddi:se.researchdata:2025-338.Organization-0:2.0</r:URN>
          <d:ID />
          <d:Version />
          <d:TypeOfObject>Organization</d:TypeOfObject>
        </d:DataCollectorOrganizationReference>
        <d:DataCollectionDate>
          <r:StartDate>2020</r:StartDate>
          <r:EndDate>2023</r:EndDate>
        </d:DataCollectionDate>
        <d:ModeOfCollection>
          <r:URN>urn:ddi:se.researchdata:2025-338.CollectionEvent-0-ModeOfCollectionType:2.0</r:URN>
          <d:TypeOfModeOfCollection>Non-participant field observation</d:TypeOfModeOfCollection>
          <r:Description>
            <r:Content xml:lang="en">Non-participant field observation</r:Content>
            <r:Content xml:lang="sv">Icke-deltagande fältobservation</r:Content>
          </r:Description>
        </d:ModeOfCollection>
      </d:CollectionEvent>
    </d:DataCollection>
    <a:Archive>
      <r:URN>urn:ddi:se.researchdata:2025-338.Archive:2.0</r:URN>
      <a:ArchiveSpecific>
        <a:Item>
          <a:Access>
            <r:URN>urn:ddi:se.researchdata:2025-338.Archive-ArchiveSpecificType-AccessType:2.0</r:URN>
            <a:TypeOfAccess controlledVocabularyName="info:eu-repo-Access-Terms vocabulary">openAccess</a:TypeOfAccess>
          </a:Access>
          <a:DataFileQuantity>6</a:DataFileQuantity>
        </a:Item>
      </a:ArchiveSpecific>
    </a:Archive>
  </s:StudyUnit>
</ddi:DDIInstance>