EN 14962:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Water quality - Guidance on the scope and selection of fish sampling methodsQualité de l'eau - Guide sur le domaine d'application et la sélection des méthodes d'échantillonnage de poissonsWasserbeschaffenheit - Anleitung zur Anwendung und Auswahl von Verfahren zur Probenahme von FischenTa slovenski standard je istoveten z:EN 14962:2006SIST EN 14962:2006en,fr,de65.15013.060.70ICS:SLOVENSKI
STANDARDSIST EN 14962:200601-julij-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14962April 2006ICS 13.060.70 English VersionWater quality - Guidance on the scope and selection of fishsampling methodsQualité de l'eau - Guide sur le domaine d'application et lasélection des méthodes d'échantillonnage de poissonsWasserbeschaffenheit - Anleitung zur Anwendung undAuswahl von Verfahren zur Probenahme von FischenThis European Standard was approved by CEN on 16 March 2006.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14962:2006: E

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

m m River category 1 (brook) < 5 < 1 River category 2 > 5 < 2 River category 3 < 30 > 2 River category 4 30 to 100 > 2 River category 5 > 100 > 2

km2 Lake category 1 With or without a pelagic or profundal zone < 0,5 Lake category 2 Without a pelagic or profundal zone > 0,5 Lake category 3 With a pelagic and profundal zone > 0,5 Table 3 — Categories for transitional waters Category Width max. Depth
m m Transitional water category 1 < 5 < 1 Transitional water category 2 > 5 < 2 Transitional water category 3 < 30 > 2 Transitional water category 4 30 to 100 > 2 Transitional water category 5 > 100 > 2
Within a river or transitional water, categories according to the Tables 1 and 3 usually change from lower to higher ones according to longitudinal changes. But also within a relatively short stretch of a river or transitional water, categories can change from lower to higher ones and vice versa. In this case, the area itself of a river or transitional water, and not the whole river or transitional water, should be classified according to the given categories. 6 Fish sampling 6.1 General Sampling methods are separated into methods by capture (6.2) and data sampling without fish capture (6.3). The principles are explained and the target water types or categories and fish species are given. The suitability of the methods is evaluated depending on the different water categories and their habitats as well as the target species. Target species are those species which can efficiently be caught by a particular method. Tables 4 to 6 provide a synopsis on sampling methods suitable or useful for the determination of the population parameters. Methods not described below may be used in order to obtain additional information. They shall not be used exclusively. 6.2 Fish sampling by capture 6.2.1 Principle of fish capture Fish may be caught by active gear (6.2.2 to 6.2.4) or passive (6.2.5 to 6.2.10). For all gear seasonal aspects shall be taken into account. The efficiency of active gear (electric fishing, seining, trawling) especially may vary considerably depending on the time (day/night) of use. Active gear is characterized by a comparatively short-term use, whereas passive ones normally are exposed over longer time periods. The fishing devices used shall be adapted to the local conditions as well as to the expected fish community. If it is intended to
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