Effects of hydropeaking on the attached eggs of a rheophilic cyprinid species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F21%3A43903147" target="_blank" >RIV/60076658:12310/21:43903147 - isvavai.cz</a>

Alternative codes found

RIV/60077344:_____/21:00553158

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/10.1002/eco.2280" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/eco.2280</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/eco.2280" target="_blank" >10.1002/eco.2280</a>

Result language

angličtina

Original language name

Effects of hydropeaking on the attached eggs of a rheophilic cyprinid species

Original language description

Human-induced changes in the hydrological regimes of lotic waters such as hydropeaking have significant negative impacts on riverine life. However, the impacts of dynamic changes in water flow on adhesive fish eggs are not very well known. We focused on the effects of hydropeaking on the spawning ground of a rheophilic cyprinid fish, the asp (Leuciscus aspius). We tested whether a sudden increase in water velocity caused by hydropeaking may have negative effect on the adhesive eggs by the combination of field observations and laboratory experiments. The main objectives of the study were to (i) investigate abiotic characteristics of an asp spawning ground, (ii) monitor egg densities in relation to hydropeaking events and (iii) test detachment rates of the asp eggs in laboratory conditions in relation to water velocity. The asp spawning ground was associated with shallow water depths (0.2-0.4 m) and flowing water (0.1-0.4 m s(-1)) during base flow. The water velocity that occurred on the spawning ground during the hydropeaking event was measured to be from 0.7-1.2 m s(-1). Asp eggs nearly disappeared from the spawning ground before their hatching time probably due to several hydropeaking events. The laboratory experiments showed the significant dependency of egg detachment rates on the water velocity and substrate type with a critical value of 0.7 m s(-1). Our data suggested that eggs may be negatively impacted by flow alterations. Avoiding hydropeaking or keeping water velocity below critical values is recommended for the management of rheophilous fish spawning grounds.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10617 - Marine biology, freshwater biology, limnology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

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

Name of the periodical

Ecohydrology

ISSN

1936-0584

e-ISSN

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Volume of the periodical

14

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

12

Pages from-to

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UT code for WoS article

000608998700001

EID of the result in the Scopus database

2-s2.0-85100223621