To cheer myself up I am off to Flat Holm in August to undertake a little water survey. Ill be there for a few days recording water seepages on the cliffs (ideal bryo territory?). The geology is dominated by Carboniferous Limestone.
Although I haven't planned to collect any bryos (it's a SSSI and I would need permission) I thought id let you know in case this was useful in anyway, or if there was anything you wanted me to look out for ? I'll be armed with a camera and GPS as a minimum.
It is the most southerly part of South Wales after all !