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Assessment of the Ecological Status of Streams in Two Carpathian Subregions

✍ Scribed by Il'ja Krno; Ferdinand Šporka; Zuzana Pastuchová; Tomáš Derka; Zuzana Čiamporová-Zaťovičová; Eva Bulánková; Ladislav Hamerlík; Daniela Illéšová

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
193 KB
Volume
92
Category
Article
ISSN
1434-2944

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✦ Synopsis

Abstract

A multimetric assessment system was developed to determine the ecological status of two types of stream in the Carpathian ecoregion following the requirements of the WFD. The organic pollution gradient was defined using Canonical Correspondence Analysis. Classification based on physical, chemical and biological data divided the tested sites into two stream types with subsequent grouping into several ecological quality classes. From all the metrics tested, 17 for the East Carpathian streams and 15 for the West Carpathian streams, from seven metric categories, were included in the resulting multimetric index. Different kinds of response to degradation (linear, unimodal, exponential) were observed. The Saprobic index (Zelinka and Marvan), Rheoindex (Banning, with abundance classes) and Index of Biocenotic region, showed the best discriminatory ability for both stream types. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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