Response of small-stream biota to sudden flow pulses following extreme precipitation events

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00459056" target="_blank" >RIV/68081766:_____/16:00459056 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12520/16:43890403 RIV/00027049:_____/16:N0000060

Výsledek na webu

<a href="http://dx.doi.org/10.15244/pjoes/60243" target="_blank" >http://dx.doi.org/10.15244/pjoes/60243</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.15244/pjoes/60243" target="_blank" >10.15244/pjoes/60243</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Response of small-stream biota to sudden flow pulses following extreme precipitation events

Popis výsledku v původním jazyce

Extreme discharge rate increases in small streams caused by sudden extreme precipitation events are classified as small-scale pulse-type disturbances. Small highland brooks in agricultural landscapes (arable land and meadows) are frequently characterised by extremely low flows during normal conditions, plus the rare appearance of high-flow events that periodically may reset their ecosystems. We studied two small highland brooks to assess the impact of extreme discharge rates (flow pulses) upon periphyton, macrozoobenthos, and fish assemblages. No distinct changes were recorded in composition of periphyton assemblage or fish (brown trout, Salmo trutta m. fario) occurrence following such flow pulses. Cyanobacteria, however, were absent following a flow pulse, while growth appeared to be boosted in green algae (Chlorophyceae). Similarly, there was no negative response observed in macrozoobenthos communities, with density, diversity, taxa richness, and saprobic indices remaining either more-or-less unchanged or considerably enhanced following high-discharge episodes. These observations were confirmed through Sorensen's similarity indices, which indicated no significant change in either periphyton or macrozoobenthos following such episodes.

Název v anglickém jazyce

Response of small-stream biota to sudden flow pulses following extreme precipitation events

Popis výsledku anglicky

Extreme discharge rate increases in small streams caused by sudden extreme precipitation events are classified as small-scale pulse-type disturbances. Small highland brooks in agricultural landscapes (arable land and meadows) are frequently characterised by extremely low flows during normal conditions, plus the rare appearance of high-flow events that periodically may reset their ecosystems. We studied two small highland brooks to assess the impact of extreme discharge rates (flow pulses) upon periphyton, macrozoobenthos, and fish assemblages. No distinct changes were recorded in composition of periphyton assemblage or fish (brown trout, Salmo trutta m. fario) occurrence following such flow pulses. Cyanobacteria, however, were absent following a flow pulse, while growth appeared to be boosted in green algae (Chlorophyceae). Similarly, there was no negative response observed in macrozoobenthos communities, with density, diversity, taxa richness, and saprobic indices remaining either more-or-less unchanged or considerably enhanced following high-discharge episodes. These observations were confirmed through Sorensen's similarity indices, which indicated no significant change in either periphyton or macrozoobenthos following such episodes.

Druh

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

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Polish Journal of Environmental Studies

ISSN

1230-1485

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

7

Strana od-do

495-501

Kód UT WoS článku

000373368300004

EID výsledku v databázi Scopus

2-s2.0-84992512734