2015
Habitat-scale evaluation of stream restoration effects: case study at Knehyne Stream
KALIVODOVÁ, Martina, Ondřej HÁJEK, Blažena BRABCOVÁ, Klára KOMPRDOVÁ, Karel BRABEC et. al.Základní údaje
Originální název
Habitat-scale evaluation of stream restoration effects: case study at Knehyne Stream
Název anglicky
Habitat-scale evaluation of stream restoration effects: case study at Knehyne Stream
Autoři
Vydání
REFORM International Conference on River and Stream Restoration “Novel Approaches to Assess and Rehabilitate Modified Rivers, 2015
Další údaje
Typ výsledku
Konferenční abstrakt
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova česky
revitalizace toku, Kněhyně, makrozoobentos, fytobentos, hydromorfologie koryta
Klíčová slova anglicky
stream restoration, Knehyne stream, macroinvertebrates, phytobenthos, channel hydromorphology
Příznaky
Mezinárodní význam
Změněno: 9. 3. 2016 14:47, Mgr. Blažena Brabcová, Ph.D.
V originále
Regulated channel of small mountain stream (Knehyne) was restored within 300 m long section. Straightened stream channel with fixed banks was changed to paired-channel pattern which has been evaluated as natural for this stream stretch. Short length of restored stretch and sedimentary unbalanced catchment required fixation of newly constructed channels by trunks anchored into river bed. Restoration aimed to change detrimental effects of vertical erosion in regulated channel into more natural channel forming processes. Furthermore coniferous forest in floodplain of restored stretch was replaced by more natural riparian vegetation. Restored river stretch differs from regulated one by occurrence of specific hydromorphological structures (side pools, lateral channels, habitat heterogeneity in bank zone). We observed specific conditions in terms of water chemistry and thermal regime in lateral habitats (pools and temporary channels). Macroinvertebrates, phytobenthos and particulate organic matter characteristics were analyzed for response to hydromorphological changes at microhabitat scale. Case study results were given into context of restoration effects in small streams obtained from 10 pairs of degraded-restored stretches (including Knehyne stream). Ecological consequences of altered hydromorphology were also compared between small and medium-sized streams studied at microhabitat scale.
Anglicky
Regulated channel of small mountain stream (Knehyne) was restored within 300 m long section. Straightened stream channel with fixed banks was changed to paired-channel pattern which has been evaluated as natural for this stream stretch. Short length of restored stretch and sedimentary unbalanced catchment required fixation of newly constructed channels by trunks anchored into river bed. Restoration aimed to change detrimental effects of vertical erosion in regulated channel into more natural channel forming processes. Furthermore coniferous forest in floodplain of restored stretch was replaced by more natural riparian vegetation. Restored river stretch differs from regulated one by occurrence of specific hydromorphological structures (side pools, lateral channels, habitat heterogeneity in bank zone). We observed specific conditions in terms of water chemistry and thermal regime in lateral habitats (pools and temporary channels). Macroinvertebrates, phytobenthos and particulate organic matter characteristics were analyzed for response to hydromorphological changes at microhabitat scale. Case study results were given into context of restoration effects in small streams obtained from 10 pairs of degraded-restored stretches (including Knehyne stream). Ecological consequences of altered hydromorphology were also compared between small and medium-sized streams studied at microhabitat scale.
Návaznosti
| LM2011028, projekt VaV |
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| LO1214, projekt VaV |
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