Drift of larval and juvenile fishes: a comparison between small and large lowlands rivers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F01%3A00003582" target="_blank" >RIV/00216224:14310/01:00003582 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Drift of larval and juvenile fishes: a comparison between small and large lowlands rivers

Popis výsledku v původním jazyce

Drift of early developmental stages of fishes was studied in two adjacent lowland rivers (Danube River basin, Czech Republic) which differed in size. Both rivers have been channelised, however only the Morava has been regulated by weirs. Drift was sampled at ten day intervals between May and August 1997. A 15 minutes sampling period was conducted every 3 hours during 24 hours using a drift net with an opening of 0.6 m2. As our sampling season coincided with extensive flooding of the Morava basin in July, we also assessed any effect of this on fish drift. A total of 19 drifting species were recorded. The most abundant species were roach, bitterling and bleak in the Morava and Japanese minnow, bitterling and silver crucian carp in the Kyjovka. Seasonal dynamics of drift were similar between both rivers with two peaks in total drift abundance. A nocturnal pattern of diel periodocity was observed at time of average discharge and disappeared when water transparency decreased during flood.

Název v anglickém jazyce

Drift of larval and juvenile fishes: a comparison between small and large lowlands rivers

Popis výsledku anglicky

Drift of early developmental stages of fishes was studied in two adjacent lowland rivers (Danube River basin, Czech Republic) which differed in size. Both rivers have been channelised, however only the Morava has been regulated by weirs. Drift was sampled at ten day intervals between May and August 1997. A 15 minutes sampling period was conducted every 3 hours during 24 hours using a drift net with an opening of 0.6 m2. As our sampling season coincided with extensive flooding of the Morava basin in July, we also assessed any effect of this on fish drift. A total of 19 drifting species were recorded. The most abundant species were roach, bitterling and bleak in the Morava and Japanese minnow, bitterling and silver crucian carp in the Kyjovka. Seasonal dynamics of drift were similar between both rivers with two peaks in total drift abundance. A nocturnal pattern of diel periodocity was observed at time of average discharge and disappeared when water transparency decreased during flood.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA206%2F97%2F0162" target="_blank" >GA206/97/0162: Obnova ekologického kontinua řeky Moravy</a><br>

Návaznosti

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

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název periodika

Archiv für Hydrobiologie (Large Rivers)

ISSN

0945-3784

e-ISSN

—

Svazek periodika

135

Číslo periodika v rámci svazku

2-4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

17

Strana od-do

373

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—