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                    <gco:CharacterString>Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services</gco:CharacterString>
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                      <gmd:date>
                        <gco:Date>2010-12-08</gco:Date>
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            <gco:CharacterString>Soil samples had been collected in a survey of the catchments of the Rivers Avon (Hampshire), Conwy (N Wales), Dee (NE Scotland), and Ribble (NW England) carried out between 2013 and 2015 (Toberman et al. 2016). Samples had been bulked from 6 or 10 separate cores, and included both topsoils and subsoils. We chose twenty soils to provide a range of SOM contents, and with sufficient light material to analyse. Most soils were under semi natural vegetation, three were from improved grassland. Arable soils were not analysed owing to their low contents of light material. We applied a modified physicochemical density fractionation method based on previously published procedures.</gco:CharacterString>
          </gmd:statement>
        </gmd:LI_Lineage>
      </gmd:lineage>
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