Predictive System for Multimetrics (PSYM)
Freshwater Habitats Trust developed PSYM (the Predictive SYstem for Multimetrics) to provide a means of assessing the quality of ponds and small lakes in England and Wales.
Calculating your PSYM score
Once you’ve collected your pond 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 plant and animal lists from your PSYM survey and allow us to add the information to the PondNet database so it is freely available for others to see, we carry out the PSYM analysis free of charge. To do this you will need to:
- Fill out our PSYM Proforma Long 2022
- Ensure that your sites have been surveyed with landowner permission and that there are no objections to the data being made publicly available.
Alternatively, if you do not wish to make your data public, you can fill out a Short PSYM proforma and we can still carry out the analysis. However, there is a charge of £18 plus VAT per site made for this service.
Please send PSYM data for analysis to Penny Williams: firstname.lastname@example.org