PSYM (pronounced "sim") method
This standard method provides an assessment of the ecological quality of a site compared to ponds nationally. It requires basic environmental information including pH and identification of the plant species and /or invertebrate families found at the site.
Calculating your PSYM score
Once you've been out in the field and collected your data, the PSYM calculation can be carried out by emailing us your data for analysis. There are two ways of doing this:
- If you provide us with the full species lists from your survey and allow us to add the information to the NPMN database we will carry out the analysis free of charge - to do this you will need to fill out our Long PSYM proforma.
- Alternatively, if you do not wish to share your species data with us you can fill out a Short PSYM proforma and we can still carry out the analysis - however, there will be a charge of £15 per sample made for this service.
More details & manual
