Topic: recording and showing negative records at sites
There must be a solution or way of doing this - i just don't know how....
When long term surveying for mobile animals like water voles or otters etc etc
It would be useful to produce maps/records to see presence and absence for survay points/areas.
It is quite easy to produce positive maps but where you have a positive record and then there is a gap we want to know surveys were turning up empty rather than no surveys were undertaken
At the moment all the records are in a spreadsheet.
Given we have very limited funds - what is the best way of producing a visual/map?