SIST EN 16164:2013

Water quality - Guidance standard for designing and selecting taxonomic keys

This European Standard defines standard principles for the design of taxonomic keys to ensure proper use of nomenclatural rules and reproducible and traceable identification. These principles also allow for the selection of the best key available.

Wasserbeschaffenheit - Anleitung zur Gestaltung und Auswahl von taxonomischen Bestimmungsschlüsseln

Diese Europäische Norm stellt allgemeine Grundlagen für die Erstellung von taxonomischen Bestimmungs-schlüsseln auf, um die richtige Anwendung nomenklatorischer Regeln sowie die Reproduzierbarkeit und Zurückverfolgbarkeit taxonomischer Bestimmungen sicherzustellen. Diese Grundlagen ermöglichen auch die Auswahl des besten verfügbaren Bestimmungsschlüssels.

Qualité de l'eau - Guide pour la conception et le choix des clés taxonomiques

La présente Norme européenne définit les principes standard permettant de concevoir des clés taxonomiques
garantissant l'utilisation adéquate des règles nomenclaturales ainsi qu’une identification reproductible et
traçable. Ces principes permettent également de choisir la meilleure clé disponible.

Kakovost vode - Navodilo za načrtovanje in izbiro taksonomskih ključev

Ta evropski standard določa načela za načrtovanje taksonomskih ključev za zagotovitev pravilnega upoštevanja zahtev za poimenovanje ter ponovljive in sledljive identifikacije. Ta načela prav tako omogočajo izbiro najboljšega razpoložljivega ključa.

General Information

• Status: Published
• Public Enquiry End Date: 04-Jan-2011
• Publication Date: 26-Jun-2013
• ICS: 13.060.01 - Water quality in general
• Technical Committee: KAV - Water quality
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 12-Jun-2013
• Due Date: 17-Aug-2013
• Completion Date: 27-Jun-2013
• Ref Project: EN 16164:2013 - Water quality - Guidance standard for designing and selecting taxonomic keys

Overview

SIST EN 16164:2013 is a European standard providing essential guidance on the design and selection of taxonomic keys for water quality analysis and ecological assessment. Developed by the Slovenian Institute for Standardization (SIST) and harmonized with EN 16164:2013, this standard establishes principles to ensure taxonomic keys deliver accurate, reproducible, and traceable identification of aquatic organisms. By following accepted nomenclatural rules and promoting best practices, the standard assists environmental professionals, ecologists, and laboratory technicians in choosing or developing reliable taxonomic identification tools, thereby supporting compliance with environmental legislation and water management frameworks across Europe.

Keywords: water quality, taxonomic keys, biological identification, ecological assessment, nomenclature, reproducible identification, taxonomy standard, SIST EN 16164:2013

Key Topics

• Principles of Biological Identification

  • Focus on accurate assignment of biological names to specimens, minimizing errors and enhancing reproducibility.
  • Emphasizes both traditional (printed) and electronic formats for identification.

• Standard Requirements for Taxonomic Keys

  • Clear definition of the taxonomic group(s) and geographic scope.
  • Suitability for the intended analytical purpose and user expertise level.
  • Comprehensive coverage of all known taxa in the target region, including relevant adjacent taxa.

• Design Considerations

  • Selection of robust, easily described, and practical diagnostic characters.
  • Structured layout for straightforward navigation (e.g., dichotomous or multi-access keys).
  • Inclusion of clear illustrations, consistent formatting, and appropriate magnification with scale indicators.
  • Strong, durable binding suitable for field or laboratory use.

• Language and Terminology

  • Use of unambiguous, user-friendly language tailored to the analyst’s proficiency.
  • Glossary of morphological and diagnostic terms, preferably illustrated.

• Validation and Testing

  • Emphasis on peer review and end-user testing to ensure usability and scientific accuracy.

Applications

SIST EN 16164:2013 serves a wide range of practical applications in the fields of water quality assessment and ecological monitoring:

• Environmental Monitoring Programs

  • Supports the selection and use of taxonomic keys under legislative frameworks such as the EU Water Framework Directive, requiring high-quality ecological data.
  • Enables reproducible identification of aquatic organisms for routine monitoring and assessment.

• Development of Identification Guides

  • Assists organizations and researchers in commissioning or authoring new taxonomic keys.
  • Provides a reference for ensuring that identification materials meet recognized international standards.

• Training and Laboratory Practice

  • Guides the preparation of training resources and laboratory manuals, ensuring that identification practices are robust and traceable.
  • Supports consistent methodology across water testing and molecular ecology laboratories.

• Reference for Audits and Quality Control

  • Facilitates audits of identification processes by providing criteria for evaluating the adequacy of taxonomic keys and guides.

Related Standards

For comprehensive water quality management and laboratory practice, the following standards are closely associated with SIST EN 16164:2013:

• EN 14996 – Guidance on assuring the quality of biological and ecological assessments in the aquatic environment
• EN ISO/IEC 17025 – General requirements for the competence of testing and calibration laboratories
• International Code of Botanical Nomenclature (ICBN)
• International Code of Zoological Nomenclature (ICZN)

These standards collectively support robust, harmonized practices in water quality testing, nomenclatural consistency, and laboratory competence throughout Europe.

SIST EN 16164:2013 is integral for anyone involved in biological identification and ecological assessment in aquatic environments, ensuring scientific credibility and regulatory compliance.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.MXþHYWasserbeschaffenheit - Anleitung zur Gestaltung und Auswahl von taxonomischen BestimmungsschlüsselnQualité de l'eau - Guide pour la conception et le choix des clés taxonomiquesWater quality - Guidance standard for designing and selecting taxonomic keys13.060.01Kakovost vode na splošnoWater quality in generalICS:Ta slovenski standard je istoveten z:EN 16164:2013SIST EN 16164:2013en,fr,de01-julij-2013SIST EN 16164:2013SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16164
January 2013 ICS 13.060.99 English Version
Water quality - Guidance standard for designing and selecting taxonomic keys
Qualité de l'eau - Guide pour la conception et le choix des clés taxonomiques
Wasserbeschaffenheit - Anleitung zur Gestaltung und Auswahl von taxonomischen Bestimmungsschlüsseln This European Standard was approved by CEN on 24 November 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16164:2013: ESIST EN 16164:2013

2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 accuracy correct identification of a specimen to the relevant taxonomic category (e.g. family, genus, species) Note 1 to entry: The definition refers to the context of this European Standard. 2.2 International Code of Botanical Nomenclature ICBN official international taxonomic code for botany 2.3 International Code of Zoological Nomenclature ICZN official international taxonomic code for zoology 2.4 nomenclatural rules rules for naming of organisms that are laid down in official taxonomic codes 2.5 traceable identification identification of a taxon which can be traced back to its original publication either directly or indirectly 3 Principles of biological identification The objective of all biological identification is to assign the correct biological name to a specimen, irrespective of the amount of morphological or other variability shown by the taxon in question. This should be done as efficiently as possible, in order to minimise time and resources. Identification provides a link between a specimen of an organism and the original ‘type specimen’ of that taxon. This is often one or more individuals of the species, preserved in a museum collection (or, in the case of many algae, an illustration), which has been described according to the rules of the ICBN or ICZN using text, measurements and illustrations. There are two methods of identifying organisms: by ‘matching’ (pattern recognition) and by ‘logical comparison’ (typically through the use of keys). The academic taxonomic literature often assumes that logical reasoning is used exclusively but, in practice, most biologists use a combination of approaches: relying on memory for naming common organisms and a mix of pattern recognition and logical reasoning for the less common organisms. It is arguably the poor quality of identification literature that causes biologists to switch from logical reasoning to pattern recognition. 4 Requirements for taxonomic keys 4.1 General principles Most identification guides assume that logical comparison plays a large part in the identification of organisms, and the guides have a key, or similar device, at their core. These work by presenting users with a limited number of choices from which to choose either in sequence (‘dichotomous keys’) or in parallel (‘multiaccess keys’). The same principles apply, regardless of the type of key. SIST EN 16164:2013

Requirements for an appropriate identification guide include:  keys appropriate to the geographic area under consideration;  appropriate taxonomic level for the analysis in question;  all known taxa from the region;  written in a language familiar to the analyst. The key itself should provide:  a clearly defined title and scope (completeness of taxonomic group);  robust characters;  clear layout;  clear language;  complete glossary. The points mentioned above are especially relevant since academic taxonomists often write from the perspective of an ‘expert’ and do not always empathise with the skills of those performing the analyses. These points are described in more detail below. 4.2 Title and scope An identification guide should be clear about the taxonomic groups and life stages covered, and the geographical scope of the guide. These should be reflected both in the title and, in more detail, in the introduction. EXAMPLE 1 Titles like “Chironomidae larvae of the Lowlands of Northwesttern Europe”, “Oligochaeta of North-West Europe” and “Chironomidae exuviae of the West Palaearctic Region” suggest a defined overview of the content. However, a number of terms within each title would need amplification in the introduction. Terms such as ‘lowlands’ would need to be explained in more detail, whilst maps and text showing the limits of the author’s understanding of ‘North-West Europe’ and ‘West Palaearctic’ would also be useful. On the other hand, it is often inappropriate to define the geographical scope too precisely; firstly, because the geographical ranges of many species are themselves known only imprecisely and secondly, because the ranges of many species are changing. EXAMPLE 2 Two species of the Trichopertan genus Drusus have been recorded from the Netherlands: D. trifidus and D. annulatus. A third species, D. biguttatus is similar to D. annulatus and has been recorded from sites close to the Dutch border, though not yet from within the Netherlands. A Dutch Trichopteran key which made no reference at all to D. biguttatus runs the risk of users ‘shoehorning’ specimens into D. annulatus. A similar situation exists for the Mollusc genus Corbicula in Britain and Ireland. C. fluminea is described in “Freshwater Bivalves of Britain and Ireland”; however, C. fluminalis has not yet been recorded from Britain and Ireland and is omitted. Users may not realise that C. fluminalis is spreading throughout Europe and may, in time, also spread to Britain and Ireland. SIST EN 16164:2013
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