Impact Type: Deposition of pollutant
The slender naiad (Najas flexilis) is an aquatic plant occurring in clear, mesotrophic lowland lakes in Scotland and Ireland. It is vulnerable to eutrophication and has disappeared from a number of sites that have become enriched (e.g. Esthwaite Water - its only English record) (Preston & Croft 1997). Experimental studies have shown N. flexilis is highly sensitive to acidification (Titus & Hoover 1993), however, it usually occurs at sites which have some base-enrichment from calcareous rocks or in machair lochs with calcareous dune sand (Preston & Croft 1997). It is, therefore, unlikely to be threatened by acid deposition.
|Critical Load/ Level|
No estimate available