Kvalita vod - Návod pro monitoring populací perlorodek říčních (Margaritifera margaritifera) a jejich prostředí (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.8.2017
Designation standards: ČSN EN 16859
Classification mark: 757791
Catalog number: 502464
Publication date standards: 1.8.2017
The number of pages: 52
Approximate weight : 156 g (0.34 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
This European Standard provides guidance on methods for monitoring freshwater pearl mussel (Margaritifera margaritifera) populations and the environmental characteristics important for maintaining populations in favourable condition. The standard is based on best practice developed and used by Margaritifera experts in Europe, and describes approaches that individual countries have adopted for survey, data analysis and condition assessment. While it is recommended that the causes for pearl mussel decline should be urgently investigated, standard methods for restoring populations are beyond the scope of this document