Taken from: http://westwalesriverstrust.org/an-update-on-the-doethie-in-river-sand-liming-and-leader-forestry-gully-liming-pilot-project/ September 2018 Summary This paper is an update on a project designed to assess the benefits of adding crushed limestone to ameliorate the effects of episodic acidification, exacerbated by historic conifer forest, on the Doethie tributary of the upper river Tywi in Carmarthenshire. This liming programme began in 2010 with the annual [...]