Mesotrophic lakes are standing water bodies with a surface area greater than 1 ha, which have moderate levels of alkalinity and nutrients. Although they may look similar to other standing water types, this is an unusual loch type in Britain. The sites have clear water and support a wide range of species. Mesotrophic lakes occur relatively infrequently, but this category includes several important sites which support rare species, such as slender naiad Najas flexilis. These sites are also often good fishing lochs.
Disclaimer: Scottish Natural Heritage (SNH) has changed the name to NatureScot as of the 24th August 2020.
At the time of publishing, this document may still refer to Scottish Natural Heritage (SNH) and include the original branding. It may also contain broken links to the old domain.
If you have any issues accessing this document please contact us via our feedback form.