Lichen Enriched by Birds - Svalbard - 1
A slight rise in the ground and some rocks make an otherwise nondescript area a look-out for birds. The guano fertilizes the area which leads to the lichens doing very well, which in turn I imagine attracts other birds and showing them the place to perch and be seen by other birds.
Apart from the birds and lichen bit, I'm not really sure about this but there's probably a PhD in it and quite an exciting place to do it in.
Photo; © Paul Ward - These are pictures from a cruise around Svalbard inside the Arctic Circle in high summer.