Stoneworts in Wales
A collation of all known records of stoneworts in Wales from 1726 to August 2003. Stoneworts (or charophytes) are a group of algae that grow in fresh and brackish water and have a relatively complex structure.
Stoneworts are good indicators of water quality as they are sensitive to pollution, including nutrient enrichment. Many are of conservation importance. 30 species have been recorded in the UK and 17 of these occur in Wales. Of the latter, 4 are Red Data Book species, 6 are Nationally Scarce, and 9 are considered rare in Wales; 3 are Priority Species in the UK BAP and are included on the National Assembly of Wales' List of Species and Habitats of Principal Importance for the Conservation of Biological Diversity (Section 74 list).
For each record in the collation the collector or recorder is named and in most cases there is a reference to the original source. The collation has been updated in 2008. The data has been derived from a range of sources; mostly from articles in journals, floras and guides, but also from herbarium records, personal observations and commissioned surveys.
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Looking up... the number of records that can be accessed through the NBN Atlas. This resource was last checked for updated data on 08 May 2018. The most recent data was published on 08 May 2018.Click to view records for the Stoneworts in Wales resource.
Metadata last updated on 2018-05-08 12:11:53.0