| Autor: |
Krno, Il'ja, Holubec, Miroslav |
| Předmět: |
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| Zdroj: |
Aquatic Insects; Nov2009 Supplement 1, Vol. 31, p377-389, 13p, 2 Diagrams, 7 Charts, 2 Graphs, 1 Map |
| Abstrakt: |
Stonefly samples were collected from disturbed and undisturbed streams of the Upper Orava river basin (the West Carpathians). Taxonomic richness was associated mainly with environment-scale factors such as water temperature, stream width and channel slope. Patterns in composition of stonefly assemblages detected by non-metric multidimensional scaling show that alterations in the catchment area caused by agriculture or forestry affect a number of stonefly metrics. Stonefly taxa richness and other biotic indices reflecting good water quality were negatively influenced by the extent of urban land cover and positively by forest land cover. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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