EN ISO 19493:2007

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Quality and safety
4 Strategies and objectives for hard-substrate surveys
5 Sampling
6 Taxon identification and sample processing
Annex A (normative) Description of methods
Annex B (informative) Field recording form
Annex C (informative) Biological definition of the
                      supralittoral, eulittoral and
                      sublittoral zones
Annex D (informative) Basis for the choice of
                      semi-quantitative surveys in a
                      standard
Annex E (informative) Detailed method for calculating
                      level of exposure
Bibliography

ISO 19493:2007 provides guidance for marine biological surveys of supralittoral, eulittoral and sublittoral hard substrate for environmental impact assessment and monitoring in coastal areas. It comprises development of the sampling programme, survey methods, species identification and storage of data and collected material.ISO 19493:2007 specifies the minimum requirements for environmental monitoring.The methods are limited to surveys and semi-quantitative and quantitative recording techniques that cause little destruction of the fauna and flora. In practice, this refers to direct recording in the field and photography. Sampling by scraping off organisms, use of a suction sampler, etc. are not covered in ISO 19493:2007.