November 4, 2025 Dataset Open Access

Pospiech, Solveig; Middleton, Maarit

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  <identifier identifierType="DOI">10.14278/rodare.4073</identifier>
  <creators>
    <creator>
      <creatorName>Pospiech, Solveig</creatorName>
      <givenName>Solveig</givenName>
      <familyName>Pospiech</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-2727-2375</nameIdentifier>
      <affiliation>HZDR</affiliation>
    </creator>
    <creator>
      <creatorName>Middleton, Maarit</creatorName>
      <givenName>Maarit</givenName>
      <familyName>Middleton</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-9117-7690</nameIdentifier>
      <affiliation>Geological Survey of Finland: Rovaniemi, FI</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Data publication: Plant data of the Horizon 2020 project NEXT</title>
  </titles>
  <publisher>Rodare</publisher>
  <publicationYear>2025</publicationYear>
  <subjects>
    <subject>data</subject>
    <subject>plant</subject>
    <subject>Finland</subject>
    <subject>geochemistry</subject>
    <subject>exploration</subject>
    <subject>NEXT</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2025-11-04</date>
  </dates>
  <resourceType resourceTypeGeneral="Dataset"/>
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    <alternateIdentifier alternateIdentifierType="url">https://rodare.hzdr.de/record/4073</alternateIdentifier>
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    <relatedIdentifier relatedIdentifierType="URL" relationType="IsReferencedBy">https://www.hzdr.de/publications/Publ-42237</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.14278/rodare.4072</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/energy</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://rodare.hzdr.de/communities/rodare</relatedIdentifier>
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  <version>1</version>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
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  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Plant‑Soil Chemistry Dataset (Raja 2019 Field Campaign)&lt;/p&gt;

&lt;p&gt;## 1. Overview&amp;nbsp;&amp;nbsp;&lt;/p&gt;

&lt;p&gt;This repository contains the **final, cleaned chemistry data** that were produced from the 2019 Raja field campaign.&amp;nbsp;&amp;nbsp;&lt;br&gt;
The data combine:&lt;/p&gt;

&lt;p&gt;* Plant tissue concentrations (leaf, bark, needles, &amp;hellip;) for a set of selected elements.&amp;nbsp;&amp;nbsp;&lt;br&gt;
* Corresponding soil‑till depth, point location, lithology and basic tree information.&amp;nbsp;&amp;nbsp;&lt;br&gt;
* Element‑specific relative‑standard‑deviation (RSD) uncertainties that were calculated from laboratory‑derived uncertainty parameters.&lt;/p&gt;

&lt;p&gt;All files are provided in **CSV** format (UTF‑8, `,` separator) and/or the R programming language binary format RData.&lt;/p&gt;

&lt;p&gt;*The exact set of tissue files depends on the species/plant‑parts that were sampled; the naming convention is `pl` + lower‑case abbreviation of the tissue (generated by `abbreviate(Plant, minlength = 2)` + `PlantPart`).*&lt;/p&gt;

&lt;p&gt;---&lt;/p&gt;

&lt;p&gt;## 2. Column description (common to all tables)&lt;/p&gt;

&lt;p&gt;| Column | Meaning | Type |&lt;br&gt;
|--------|---------|------|&lt;br&gt;
| `PointID` | Unique identifier for the sampling point (e.g., `NEXT‑2019‑257`). | character |&lt;br&gt;
| `X` / `Y` | Projected coordinates (Easting / Northing, EPSG 3067). | numeric |&lt;br&gt;
| `Plant` | Species name (full). | character |&lt;br&gt;
| `PlantPart` | Plant part sampled (`Leaf`, `Bark`, `Fruit`, &amp;hellip;). | character |&lt;br&gt;
| `Tissue` | Short code: `&amp;lt;abbr&amp;gt; &amp;lt;PlantPart&amp;gt;` (e.g., `Ac Leaf`). | character |&lt;br&gt;
| `Lithology_updated_Sol` | Detailed lithology description from field notes. | character |&lt;br&gt;
| `Lith_simpl` | Simplified lithology (e.g., `Mafic rocks`). | character |&lt;br&gt;
| `TillDepth_cm` | Soil till depth at the point (cm). | numeric |&lt;br&gt;
| **Element columns** (e.g. `Al`, `As`, `Ca`, &amp;hellip;) | Measured concentration **or** relative uncertainty, depending on the file (see below). | numeric |&lt;br&gt;
| `Tissue` (re‑appears) | Same as above &amp;ndash; kept for convenience. | character |&lt;/p&gt;

&lt;p&gt;### 2.1. Concentration vs. Uncertainty tables&amp;nbsp;&amp;nbsp;&lt;/p&gt;

&lt;p&gt;* **`Plant_all_final.csv`** &amp;ndash; contains **concentrations** (units as reported by the laboratory, typically mg kg⁻&amp;sup1;).&amp;nbsp;&amp;nbsp;&lt;br&gt;
* **`Plant_uncensored_raw.RData`** &amp;ndash; contains the very original, untreated data.&amp;nbsp;&amp;nbsp;&lt;br&gt;
* **`*_uncertainty*.csv`**&amp;nbsp; &amp;ndash; the element columns have been **replaced by their relative standard deviation (RSD)**, i.e. a unit‑less proportion (`0.12` = 12 % RSD).&amp;nbsp;&amp;nbsp;&lt;/p&gt;

&lt;p&gt;If you need both concentration **and** uncertainty for a given point, use the two files together (join on `PointID`).&lt;/p&gt;

&lt;p&gt;---&lt;/p&gt;

&lt;p&gt;## 3. Usage notes&amp;nbsp;&amp;nbsp;&lt;/p&gt;

&lt;p&gt;* **Joining concentration &amp;amp; uncertainty** &amp;ndash; the two CSVs &amp;#39;plant&amp;#39; and &amp;#39;plant_uncertainty&amp;#39; share the same column order and can be merged on `PointID`.&amp;nbsp;&amp;nbsp;&lt;br&gt;
* **Missing values** &amp;ndash; `NA` indicates either a non‑detected element or that no uncertainty parameter was available for that element.&amp;nbsp;&amp;nbsp;&lt;br&gt;
* **Spatial reference** &amp;ndash; coordinates are in **ETRS89 / Lantm&amp;auml;teriet 3006 (EPSG 3067)**, suitable for Swedish national mapping.&amp;nbsp;&amp;nbsp;&lt;br&gt;
* **Element selection** &amp;ndash; in the subdatasets not every element is present in every tissue file; only the elements that passed the QC selection criteria are kept.&amp;nbsp;&amp;nbsp;&lt;/p&gt;</description>
  </descriptions>
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