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. 2022 Feb 1;806:150468. doi: 10.1016/j.scitotenv.2021.150468

Fig. 2.

Fig. 2

Taxonomic resolution for Alnus, Cupressaceae and Urticaceae achieved using trnL and nrITS2 metabarcoding of pollen grains collected with a Burkard sampler at two pollen monitoring sites in the Netherlands. Results from trnL are shown on the left side while nrITS2 is shown on the right. Colours of the circles represent the percentage of identified reads. The maximum taxonomic resolution achieved using microscopic pollen identification for the three target taxa is noted in bold.