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Data Visualization
Methodology: https://www.eea.europa.eu/publications/the-european-grassland-butterfly-indicator-19902011
Population index of grassland butterflies is produced by Butterfly Conservation Europe and Statistics Netherlands:
For references, please go to https://www.eea.europa.eu/data-and-maps/daviz/european-grassland-butterfly-indicator-2 or scan the QR code.
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