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Assessment of the Ecological Status of Streams in Two Carpathian Subregions
Author(s) -
Krno Il'ja,
Šporka Ferdinand,
Pastuchová Zuzana,
Derka Tomáš,
ČiamporováZaťovičová Zuzana,
Bulánková Eva,
Hamerlík Ladislav,
Illéšová Daniela
Publication year - 2007
Publication title -
international review of hydrobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 1434-2944
DOI - 10.1002/iroh.200610996
Subject(s) - streams , ecoregion , environmental science , ecology , canonical correspondence analysis , abundance (ecology) , index (typography) , pollution , geography , metric (unit) , physical geography , biology , computer science , computer network , operations management , world wide web , economics
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)