Effects of managed flooding on fish assemblages in man-made
floodplain water bodies

a 2005

Effects of managed flooding on fish assemblages in man-made floodplain water bodies

JANÁČ, Michal; Pavel JURAJDA; Markéta ONDRAČKOVÁ a Martin REICHARD

Základní údaje

Originální název

Effects of managed flooding on fish assemblages in man-made floodplain water bodies

Název česky

Vliv řízeného zaplavování na rybí společenstva v umělých záplavových tůních

Autoři

JANÁČ, Michal; Pavel JURAJDA; Markéta ONDRAČKOVÁ a Martin REICHARD

Vydání

Fisheries Society of the British Isles, 18.07.2005-22.07.2005, Bangor, 2005

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10600 1.6 Biological sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000202950300028

Klíčová slova anglicky

flooding; fish assemblages

Změněno: 4. 12. 2009 16:17, Mgr. Michal Janáč, Ph.D.

Anotace

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.

Návaznosti

AV0Z60930519, záměr

Název: Biodiverzita a ekologie obratlovců: Strategie ochrany a využívání přírodních populací

Citovat

JANÁČ, Michal; Pavel JURAJDA; Markéta ONDRAČKOVÁ a Martin REICHARD. Effects of managed flooding on fish assemblages in man-made floodplain water bodies. In Fisheries Society of the British Isles, 18.07.2005-22.07.2005, Bangor. 2005.

@proceedings{857887,
   author = {Janáč, Michal and Jurajda, Pavel and Ondračková, Markéta and Reichard, Martin},
   booktitle = {Fisheries Society of the British Isles, 18.07.2005-22.07.2005, Bangor},
   keywords = {flooding; fish assemblages},
   language = {eng},
   title = {Effects of managed flooding on fish assemblages in man-made floodplain water bodies},
   year = {2005}
}

TY  - CONF
ID  - 857887
AU  - Janáč, Michal - Jurajda, Pavel - Ondračková, Markéta - Reichard, Martin
PY  - 2005
TI  - Effects of managed flooding on fish assemblages in man-made floodplain water bodies
KW  - flooding
KW  - fish assemblages
N2  - 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.
ER  -

JANÁČ, Michal; Pavel JURAJDA; Markéta ONDRAČKOVÁ a Martin REICHARD. Effects of managed flooding on fish assemblages in man-made floodplain water bodies. In \textit{Fisheries Society of the British Isles, 18.07.2005-22.07.2005, Bangor}. 2005.

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