ISO 19493:2007
Water quality -- Guidance on marine biological surveys of hard-substrate communities
Product Details
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.