NDFF Hamatocaulis vernicosus

This NEM (Netherlands Ecological Monitoring) monitoring program monitors only Hamatocaulis vernicosus at all known habitats in the Netherlands. The presence or absence of a species is noted per 10x10 metres grid cell in and around known habitats. The species is categorised as absent when it is not seen during the maximum search period of 2 minutes. The NEM monitoring program is only carried out by professional, trained observers. Dataset available via https://www.ndff.nl/english / [e-mail] Positive observations without zeros. 4,507 records (March 2018) Dutch information on protocol: https://www.ndff.nl/overdendff/validatie/protocollen/2-201-geel-schorpioenmos/