EN 14184:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Wasserbeschaffenheit - Anleitung für die Untersuchung aquatischer Makrophyten in FließgewässernQualité de l'eau - Guide pour l'étude des macrophytes aquatiques dans les cours d'eauxWater quality - Guidance standard for the surveying of aquatic macrophytes in running waters13.060.70Preiskava bioloških lastnosti vodeExamination of biological properties of water13.060.10Voda iz naravnih virovWater of natural resourcesICS:Ta slovenski standard je istoveten z:EN 14184:2003SIST EN 14184:2003en01-december-2003SIST EN 14184:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14184September 2003ICS 13.060.70English versionWater quality - Guidance standard for the surveying of aquaticmacrophytes in running watersQualité de l'eau - Guide pour l'étude des macrophytesaquatiques dans les cours d'eauxWasserbeschaffenheit - Anleitung für die Untersuchungaquatischer Makrophyten in FließgewässernThis European Standard was approved by CEN on 1 August 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14184:2003 ESIST EN 14184:2003

Surveying will need to be later in the year in northern parts of Europe to take into account localclimatic influences.Comparative surveys in subsequent years should be undertaken at the same time of the year as in previousyears. This will ensure that changes resulting from differential seasonal growth patterns are minimised. Thedevelopment of macrophyte growth in the spring can vary between years as it is highly dependent on waterdepth, physical disturbance, flow regime, solar radiation (photosynthetically active radiation, PAR) and watertemperature. All of these factors can vary significantly between years. For these reasons pilot visits to surveysites are necessary in order to assess the state of development.SIST EN 14184:2003
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