DIN EN ISO 19493:2007 Edition

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Water quality – Guidance on marine biological surveys of hard-substrate communities

Published By	Publication Date	Number of Pages
DIN	2007-09	29

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Categories: 13.060.70 - Examination of biological properties of water, DIN

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Description

Surveys of attached algae (benthic algae) and attached or slow-moving animals on hard bottom represent an important part of marine environmental surveys. The taxon composition, both in terms of the taxa present and their relative abundances, is a result of the natural and anthropogenic environmental factors at the survey site. Natural factors that affect the taxon composition include wave exposure, ice scouring, fresh water influence, food and nutrient availability, substrate composition and slope, orientation, supply of particles, current, depth, light conditions, temperature and biological interactions. Potential anthropogenic factors include pollution from oil, contaminants, particles, physical disturbance and elevated nutrient levels. A number of different methods have been used to investigate flora and fauna on hard bottom, according to the survey aim and the type of biotope surveyed. This standard is based on a limited selection of methods that allow precise documentation, that are replicable and which have been tested over many years. For the purposes of this standard, hard bottom is defined as bedrock, stable rocks and fixed marine constructions (e. g. pipelines, quays and wharf, keys and pipelines pole). The guidelines can also be used for surveys of substrates comprising loose pebbles/boulders, stone blocks, coarse gravel and other loose material as well as bedrock covered with loose sediment, but in general, such substrates require specially adapted techniques. Additional methods are required for surveys in depths greater than approximate 30 m.

Additional information

Published Code	DIN
Published By	Deutsches Institut für Normung
Publication Date	2007-09
Pages Count	29
Language	Germany
Descriptors	Aquatic biology, Biological analysis and testing, Chemical analysis and testing, Chemistry of water, Coastal zones, Consistency (mechanical property), Definitions, Depth, Instructions, Investigation methods, Investigations, Marine biology, Marine environment, Marine pollution, Payment, Physical testing, Preparation, Process description, Protocols, Quality, Quality assurance, Sample, Samples, Sampling equipment, Sampling methods, Sampling tables, Sea bed, Sea water, Seas, Seawater, Shoreline, Specimen preparation, Specimens, Standard methods, Surface water, Surveillance (approval), Taking-out, Taxonomy, Terms of payment, Testing, Water, Water analysis, Water practice, Water quality, Water testing, Sample preparation, Records
File Size	358.4 KB
ICS Codes	13.060.70 - Examination of biological properties of water

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DIN EN ISO 19493:2007 Edition

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