Detailed Information on Publication Record
2005
Effects of managed flooding on fish assemblages in man-made floodplain water bodies
JANÁČ, Michal, Pavel JURAJDA, Markéta ONDRAČKOVÁ and Martin REICHARDBasic information
Original name
Effects of managed flooding on fish assemblages in man-made floodplain water bodies
Name in Czech
Vliv řízeného zaplavování na rybí společenstva v umělých záplavových tůních
Authors
JANÁČ, Michal, Pavel JURAJDA, Markéta ONDRAČKOVÁ and Martin REICHARD
Edition
Fisheries Society of the British Isles, 18.07.2005-22.07.2005, Bangor, 2005
Other information
Language
English
Type of outcome
Konferenční abstrakt
Field of Study
10600 1.6 Biological sciences
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
Organization unit
Faculty of Science
UT WoS
000202950300028
Keywords in English
flooding; fish assemblages
Změněno: 4/12/2009 16:17, Mgr. Michal Janáč, Ph.D.
Abstract
V originále
The loss of flood plain through river channelization can have adverse affects on riverine fish fauna through a reduction in the abundance and diversity of species. Most of the lowland floodplain rivers in Central Europe have been channelized and regulated. The area along the lower River Dyje (Danube basin) is an exception where a fragment of the flood plain remains. The southern part of this area is under an experimental managed flooding regime to support fish reproduction. The effectiveness of managed flooding was investigated by comparing adult and 0+ juvenile fish assemblages in two types of borrow pits (lakes created after excavation of material for dike construction) during four years. All man-made borrow pits had uniform habitats without shelters and with limited spawning and nursery areas. The habitat conditions in three borrow pits was improved by managed flooding during spring and summer of differing extension and duration. Three control sites were not flooded. The species diversity of adult fish did not differ between flooded and non-flooded sites, but the fish density was higher in flooded borrow pits. Considerable differences between flooded and non-flooded sites were found in species richness, species composition and fish density of 0+ fish assemblages. No difference was observed between flooded and non-flooded sites during short-duration managed flooding. We could conclude that managed flooding is an important factor for supporting fish diversity and production in the substitute man-made lentic water bodies, however the duration of flooding plays an important role.
Links
AV0Z60930519, plan (intention) |
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