I heard that the British Lichen Society is planning an obituary though it may take some time.
It would be good to record his input to iSpot with a project, but I donāt think you can filter for anyone but observation creators.
A search under his name brought up 2 interesting obs (not his) that people might like to visit:
https://www.ispotnature.org/communities/uk-and-ireland/view/observation/234312/
and
https://www.ispotnature.org/communities/uk-and-ireland/view/observation/89057/
His username is AlanS.
Also interesting to note that he posted no observations on iSpot.
If anyone wants to do more on this I have the 1600 comments (the actual words themselves not just the links to the ispot observation) that Alan made on ispot, I could let you have a file with them in. He often made very useful comments.
I donāt have the identifications he made but could find them too, however I canāt get the agreements as we donāt have a way to find those without writing more code.
Yes, greatly missed. (thanks JoC)