The Outer Hebrides has a rich diversity and abundance of marine and freshwater habitats which make an important contribution to our biodiversity. We know far more about the composition and distribution of the species of marine algae than the species found in freshwater and brackish habitats. Determining the status of even the better known groups is very difficult as reliable site-specific records are scattered throughout the scientific literature or are inaccessible.
Recording and identifying the species of micro-algae is not for the novice biological recorder, but the seaweeds (marine macro-algae) are a good place to start and most species can be easily identified using a good field guide. So if you enjoy beachcombing your walks can become even more rewarding by recording the seaweed you encounter.
Records of algae observed in the islands should be forwarded to Outer Hebrides Biological Recording. Full details are available on the OHBR website. Records of algae submitted to OHBR are made publicly available via the National Biodiversity Network Atlas Scotland.
Biological recording in the Outer Hebrides is supported by Scottish Natural Heritage.