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macroinvertebrati acquatici e direttiva 2000/60/ec (wfd) - IRSA - Cnr

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ICMEASY 1.2: A SOFTWARE FOR THE<br />

INTERCALIBRATION COMMON METRICS AND<br />

INDEX EASY CALCULATION.<br />

USER GUIDE<br />

Andrea Buffagni 1 & Carlo Belfiore 2<br />

1<br />

CNR-<strong>IRSA</strong>, Water Research Institute, Brugherio<br />

Italy, buffagni@irsa.cnr.it<br />

2<br />

DECOS, Università della Tuscia, Viterbo Italy,<br />

c.belfiore@unitus.it<br />

SUMMARY<br />

Instructions on the use of a new software, named<br />

ICMeasy, are provided for the purpose of corr<strong>ec</strong>tly<br />

calculating Intercalibration Common Metrics (ICMs)<br />

and Indices (ICMi) for European rivers based on<br />

aquatic invertebrate information. All the<br />

Geographical Intercalibration Groups (GIGs) defined<br />

for the Water Framework Dir<strong>ec</strong>tive Intercalibration<br />

process are considered. Starting from a txt input file,<br />

the software is able to calculate ICMs and ICMi<br />

based on: invertebrate families found at a site; a<br />

quality classification of the samples (at least for<br />

those in High status or coll<strong>ec</strong>ted from Reference<br />

sites). The software always calculates a standard<br />

set of IC metrics (STAR_ICMs) and the derivative<br />

index (STAR_ICMi). In combination with<br />

STAR_ICMs and index, in formal use in the<br />

Central/Baltic, Mediterranean and Nordic GIGs, an<br />

additional set of metrics and index can be calculated<br />

according to the GIG area that samples were<br />

coll<strong>ec</strong>ted in. Mediterranean, Alpine and<br />

Eastern/Continental sets of IC metrics and IC<br />

indices, as they were finally defined for the formal IC<br />

process, can also be calculated. In addition, the<br />

software accepts data for pressures, National<br />

methods or environmental variables for dir<strong>ec</strong>t<br />

comparison with IC indices, via linear regression<br />

analysis. In the output file, single metrics and indices<br />

values are provided, together with summary<br />

information on data used and regression analysis.<br />

All the information needed to make calculations and<br />

use ICMeasy is supplied.<br />

RIASSUNTO<br />

Sono descritte le istruzioni d’uso di un nuovo<br />

software, denominato ICMeasy, al fine di consentire<br />

il calcolo corretto delle principali metriche e degli<br />

indici in uso per i <strong>macroinvertebrati</strong> <strong>acquatici</strong> dei<br />

fiumi nell’ambito del processo europeo di<br />

Intercalibrazione per la WFD i.e. Intercalibration<br />

Common Metrics (ICMs) and Indices (ICMi). Tutti i<br />

Notiziario dei Metodi Analitici<br />

101<br />

n. 1 (2007)<br />

Gruppi Geografici di Int<strong>ec</strong>alibrazione (GIGs) definiti<br />

a livello europeo sono considerati dal software.<br />

Partendo da un file di input in formato txt, il software<br />

è in grado di calcolare le ICMs e gli ICMi sulla base<br />

di: a) famiglie di invertebrati rinvenute in un sito<br />

fluviale; b) classificazione di qualità dei campioni<br />

(almeno per una parte di quelli provenienti da siti di<br />

Riferimento o considerati in Stato Elevato). Il<br />

software calcola automaticamente una lista standard<br />

di metriche dell’Intercalibrazione (STAR_ICMs) e<br />

l’indice da esse derivato (STAR_ICMi), in uso come<br />

metodo ufficiale nei GIG Centrale/Baltico,<br />

Mediterraneo e Nordico. In combinazione con le<br />

STAR_ICMs a lo STAR_ICMi, possono anche<br />

essere calcolate le metriche IC ufficiali dei GIG<br />

Alpino e Eastern/Continental e i relativi indici, in<br />

accordo con il GIG di appartenenza. Inoltre, il<br />

software è in grado di gestire dati su pressioni,<br />

metodi nazionali o relativi a variabili ambientali per<br />

effettuare un confronto diretto con gli indici<br />

dell’Intercalibrazione mediante analisi di regressione<br />

lineare. Nel file di output sono riportati i valori di<br />

ciascuna metrica singola e degli indici multimetrici,<br />

insieme ad una sintesi dell’informazione relativa ai<br />

dati analizzati ed all’analisi di regressione. Nel<br />

presente contributo sono fornite tutte le informazioni<br />

n<strong>ec</strong>essarie per effettuare i calcoli delle metriche e<br />

degli indici di Intercalibrazione e per utilizzare<br />

correttamente il software ICMeasy.<br />

INTRODUCTION AND GENERAL STRUCTURE<br />

OF THE SOFTWARE<br />

The scientific context of the Intercalibration Common<br />

Metric (ICM) approach and its general relevance to<br />

the European Water Framework Dir<strong>ec</strong>tive (WFD)<br />

Intercalibration process has been explained<br />

elsewhere (Buffagni et al., 2005; 2007; Buffagni &<br />

Furse, 2006; Furse et al., 2006a; 2006b). The need<br />

for a calculation tool able to corr<strong>ec</strong>tly compute ICMs<br />

and indices, based appropriately on the founding<br />

principles of the ICM approach (Buffagni et al., 2005;<br />

2006), is being emphasized elsewhere (Buffagni &<br />

Belfiore, in preparation). The REBECCA proj<strong>ec</strong>t<br />

(Rekolainen, 2005), the context of which ICMeasy<br />

was developed (Buffagni & Belfiore, op. cit.),<br />

focuses on defining relationships between biological<br />

elements and pressures in the context of the WFD. It<br />

also aims at providing validation for some of the<br />

scientific assumptions currently proposed in the<br />

implementation of the WFD, including the IC metrics<br />

and indices approach to describe pressure<br />

gradients. The conceptual basis of the ICMeasy<br />

software structure can be found in Buffagni &<br />

Belfiore (in preparation). In this paper, the aim is to<br />

provide end-users with the n<strong>ec</strong>essary information to<br />

corr<strong>ec</strong>tly make calculations and use ICMeasy.

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