NatureScot Commissioned Report 641: Site Condition Monitoring of invertebrates at Strath SSSI
This document reports on a contract to carry out invertebrate at Strath SSSI in 2013. Wetland mollusc species richness and abundance have declined along the southern and western shores of Loch Cill Chriosd since the 2003 SCM. Vertigo lilljeborgi in particular appears now confined to a narrow strip of un-grazed fen along the inflow burn; this strip was notably species-rich in comparison to the grazed shore-line wetlands. The intensity of livestock grazing has clearly increased over the 10-year period and more of the fen along the inflow burn is now open to grazing; this is clearly the main cause for the decline of the wetland molluscs. Condition assessment is unfavourable-declining.
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