Craywatch: Validated presence/absence dataset of invasive crayfish species in Flanders, Belgium (2024-2025)

This dataset contains validated presence/absence data of invasive crayfish species in Flanders, Belgium. The data were collected through the citizen science project Craywatch and submitted as observations to Waarnemingen.be. Here they are aggregated to indicate the presence/absence of 7 target species per sampling session.

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