When a river is affected by a reservoir: Trophic interactions
and flexibility in feeding strategies of alpine bullhead
(Cottus poecilopus) and European bullhead (Cottus gobio)

J 2019

When a river is affected by a reservoir: Trophic interactions and flexibility in feeding strategies of alpine bullhead (Cottus poecilopus) and European bullhead (Cottus gobio)

STEVOVE, Barbora, Miroslava BABELOVA, Danka HARUŠTIAKOVÁ a Vladimir KOVAC

Základní údaje

Originální název

When a river is affected by a reservoir: Trophic interactions and flexibility in feeding strategies of alpine bullhead (Cottus poecilopus) and European bullhead (Cottus gobio)

Autoři

STEVOVE, Barbora (703 Slovensko), Miroslava BABELOVA (703 Slovensko), Danka HARUŠTIAKOVÁ (703 Slovensko, garant, domácí) a Vladimir KOVAC (703 Slovensko)

Vydání

Science of the Total Environment, Amsterdam, Elsevier Science, 2019, 0048-9697

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10511 Environmental sciences

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Full Text

Impakt faktor

Impact factor: 6.551

Kód RIV

RIV/00216224:14310/19:00108987

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1016/j.scitotenv.2018.10.068

UT WoS

000450551600025

Klíčová slova anglicky

Montane river; Anthropogenic disturbance; Fish; Competition for food; Altitudinal distribution

Štítky

14119612, podil, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 13. 3. 2020 10:53, Mgr. Marie Šípková, DiS.

Anotace

V originále

The alpine bullhead and European bullhead are benthic fish species protected by law in several European countries. One of the problems of European rivers is the ever-increasing number of reservoirs, which has adverse impacts on aquatic ecosystems. Feeding ecology of both species evaluated separately has been a subject of several studies, however, none of the studies paid attention to feeding interactions between them. Thus, the aims of the study were to evaluate trophic interactions of the two bullhead species and to assess their ability to cope with environmental disturbances caused by a reservoir. The study area consisted of three sites on the river Cierny Vah (Slovakia) that differed from each other by the intensity of pressures posed by the reservoir. The two species were found to coexist at two sites below the reservoir, because the reservoir affected their distribution along the river. For alpine bullhead, chironomid, hydropsychid and baetid larvae were the most important prey items, whereas the diet spectrum of European bullhead contained hydropsychid, chironomid larvae and detritus. Differences in diet composition were found among sampling sites. Temporal variations in the diet composition demonstrated that alpine bullhead is a more flexible feeder than European bullhead. Being predominantly food generalists, both species were able to shift their feeding strategies towards specialization when exposed to environmental disturbances at the most affected site. The reservoir increased the diet overlap between the two species, and thus changed their trophic interactions. Both alpine bullhead and European bullhead managed to cope with environmental disturbances caused by the reservoir, however, in lower population densities. Moreover, the reduced diversity of resources increased the potential for trophic competition between them.

Citovat

STEVOVE, Barbora, Miroslava BABELOVA, Danka HARUŠTIAKOVÁ a Vladimir KOVAC. When a river is affected by a reservoir: Trophic interactions and flexibility in feeding strategies of alpine bullhead (Cottus poecilopus) and European bullhead (Cottus gobio). Science of the Total Environment. Amsterdam: Elsevier Science, 2019, roč. 651, February, s. 1903-1912. ISSN 0048-9697. Dostupné z: https://dx.doi.org/10.1016/j.scitotenv.2018.10.068.

@article{1484423,
   author = {Stevove, Barbora and Babelova, Miroslava and Haruštiaková, Danka and Kovac, Vladimir},
   article_location = {Amsterdam},
   article_number = {February},
   doi = {http://dx.doi.org/10.1016/j.scitotenv.2018.10.068},
   keywords = {Montane river; Anthropogenic disturbance; Fish; Competition for food; Altitudinal distribution},
   language = {eng},
   issn = {0048-9697},
   journal = {Science of the Total Environment},
   title = {When a river is affected by a reservoir: Trophic interactions and flexibility in feeding strategies of alpine bullhead (Cottus poecilopus) and European bullhead (Cottus gobio)},
   url = {https://www.sciencedirect.com/science/article/pii/S0048969718339391?via%3Dihub},
   volume = {651},
   year = {2019}
}

TY  - JOUR
ID  - 1484423
AU  - Stevove, Barbora - Babelova, Miroslava - Haruštiaková, Danka - Kovac, Vladimir
PY  - 2019
TI  - When a river is affected by a reservoir: Trophic interactions and flexibility in feeding strategies of alpine bullhead (Cottus poecilopus) and European bullhead (Cottus gobio)
JF  - Science of the Total Environment
VL  - 651
IS  - February
SP  - 1903-1912
EP  - 1903-1912
PB  - Elsevier Science
SN  - 00489697
KW  - Montane river
KW  - Anthropogenic disturbance
KW  - Fish
KW  - Competition for food
KW  - Altitudinal distribution
UR  - https://www.sciencedirect.com/science/article/pii/S0048969718339391?via%3Dihub
L2  - https://www.sciencedirect.com/science/article/pii/S0048969718339391?via%3Dihub
N2  - The alpine bullhead and European bullhead are benthic fish species protected by law in several European countries. One of the problems of European rivers is the ever-increasing number of reservoirs, which has adverse impacts on aquatic ecosystems. Feeding ecology of both species evaluated separately has been a subject of several studies, however, none of the studies paid attention to feeding interactions between them. Thus, the aims of the study were to evaluate trophic interactions of the two bullhead species and to assess their ability to cope with environmental disturbances caused by a reservoir. The study area consisted of three sites on the river Cierny Vah (Slovakia) that differed from each other by the intensity of pressures posed by the reservoir. The two species were found to coexist at two sites below the reservoir, because the reservoir affected their distribution along the river. For alpine bullhead, chironomid, hydropsychid and baetid larvae were the most important prey items, whereas the diet spectrum of European bullhead contained hydropsychid, chironomid larvae and detritus. Differences in diet composition were found among sampling sites. Temporal variations in the diet composition demonstrated that alpine bullhead is a more flexible feeder than European bullhead. Being predominantly food generalists, both species were able to shift their feeding strategies towards specialization when exposed to environmental disturbances at the most affected site. The reservoir increased the diet overlap between the two species, and thus changed their trophic interactions. Both alpine bullhead and European bullhead managed to cope with environmental disturbances caused by the reservoir, however, in lower population densities. Moreover, the reduced diversity of resources increased the potential for trophic competition between them.
ER  -

STEVOVE, Barbora, Miroslava BABELOVA, Danka HARUŠTIAKOVÁ a Vladimir KOVAC. When a river is affected by a reservoir: Trophic interactions and flexibility in feeding strategies of alpine bullhead (Cottus poecilopus) and European bullhead (Cottus gobio). \textit{Science of the Total Environment}. Amsterdam: Elsevier Science, 2019, roč.~651, February, s.~1903-1912. ISSN~0048-9697. Dostupné z: https://dx.doi.org/10.1016/j.scitotenv.2018.10.068.

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