oak trunk with range of lower plants
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
We have Hypogymnia physodes (as Nev has correctly identified), Parmotrema perlatum, Flavoparmelia caperata, Evernia prunastri, a Parmelia sp. and an Usnea sp.
iSpot works on the basis of one species per observation, so it's difficult to know what to do with this one. All lichens, though.
Hypogymnia physodes is only a small part of the community here and I would not have chosen it as the species to represent the community. iSpot doesn't seem to have a mechansism for communities, surely the point of the photograph.
By clicking on the photograph we see the poster's own caption, listing most of the species - it would have been good(better) if the caption was part of the notes on the page.
By the way, I don't see any lower plants, just lichens (which are fungi, not plants).
Lat/Lng: 55.6825, -6.031
OS grid ref: NR467505