Fish community of a heavily modified urban stretch of the River Svratka: Fish rescue transfer prior to the initiation of flood protection constructions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F23%3A43923669" target="_blank" >RIV/62156489:43210/23:43923669 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081766:_____/23:00574837

Výsledek na webu

<a href="https://doi.org/10.11118/actaun.2023.012" target="_blank" >https://doi.org/10.11118/actaun.2023.012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.11118/actaun.2023.012" target="_blank" >10.11118/actaun.2023.012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fish community of a heavily modified urban stretch of the River Svratka: Fish rescue transfer prior to the initiation of flood protection constructions

Popis výsledku v původním jazyce

Here, we present the results of a large-scale fish rescue prior to the building of flood protection structures along a stretch of the River Svratka running through Brno city centre (Moravia, Czech Republic). During this demanding and unique event, 5,861 fish, with a total weight of 1,951 kg, were caught and successfully transferred downstream. A total of 21 species of fish were recorded, of which two were protected species and two non-native to the Czech Republic. The dominant species caught (i.e. &gt; 10%) were chub (Squalius cephalus), nase (Chondrostoma nasus), roach (Rutilus rutilus) and vimba bream (Vimba vimba), making up 85% of the catch. While this stretch of the Svratka supported a type-specific fish community dominated by rheophilic species, the occurrence of many species was supported through stocking by the Moravian Anglers Association. The length-frequency distribution of individual fish species suggests there has been a lack of recruitment over a relatively long period. This is most likely linked with hydropeaking from the Brno reservoir water power plant, with daily sharp fluctuations in flow in a river channel lacking shallow bankside areas and refuges with slow-flowing water preventing fish fry survival.

Název v anglickém jazyce

Fish community of a heavily modified urban stretch of the River Svratka: Fish rescue transfer prior to the initiation of flood protection constructions

Popis výsledku anglicky

Here, we present the results of a large-scale fish rescue prior to the building of flood protection structures along a stretch of the River Svratka running through Brno city centre (Moravia, Czech Republic). During this demanding and unique event, 5,861 fish, with a total weight of 1,951 kg, were caught and successfully transferred downstream. A total of 21 species of fish were recorded, of which two were protected species and two non-native to the Czech Republic. The dominant species caught (i.e. &gt; 10%) were chub (Squalius cephalus), nase (Chondrostoma nasus), roach (Rutilus rutilus) and vimba bream (Vimba vimba), making up 85% of the catch. While this stretch of the Svratka supported a type-specific fish community dominated by rheophilic species, the occurrence of many species was supported through stocking by the Moravian Anglers Association. The length-frequency distribution of individual fish species suggests there has been a lack of recruitment over a relatively long period. This is most likely linked with hydropeaking from the Brno reservoir water power plant, with daily sharp fluctuations in flow in a river channel lacking shallow bankside areas and refuges with slow-flowing water preventing fish fry survival.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

<a href="/cs/project/EF16_019%2F0000869" target="_blank" >EF16_019/0000869: Udržitelná produkce zdravých ryb v různých akvakulturních systémech - PROFISH</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

ISSN

1211-8516

e-ISSN

2464-8310

Svazek periodika

71

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

163-169

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85165131021