The impact of a catastrophic flood on species and size composition of the diet of fish-eating birds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F20%3A00538614" target="_blank" >RIV/60077344:_____/20:00538614 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/20:10418428

Výsledek na webu

<a href="https://doi.org/10.1016/j.actao.2020.103608" target="_blank" >https://doi.org/10.1016/j.actao.2020.103608</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actao.2020.103608" target="_blank" >10.1016/j.actao.2020.103608</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The impact of a catastrophic flood on species and size composition of the diet of fish-eating birds

Popis výsledku v původním jazyce

Floods in June 2013 affected significant portions of the Czech Republic (total damages amounted similar to 600 millions of euro). This study examines the impact of catastrophic flood on the species composition and size of fish prey in the diet of the common kingfisher (Alcedo atthis), a fish-eating bird, nesting and hunting on Botic stream (Prague, Czech Republic) in 2013. Hundred and forty years water (flow 74.5 m(3) s(-1)) caused considerable damage to property and it is likely that the character and size composition of biota, especially fish, changed. This should be reflected naturally in the diet of resident kingfishers. The diet of kingfishers before and after the flood were investigated from the mass of regurgitated pellets, which were collected from the nest tunnel and chamber immediately after the successful breeding period before and after the flood event. Before the flood (normal situation, flow 0.4-1.5 m(3) s(-1)), the average length of fish caught was 6.5 cm L-T (total length), average weight 2.6 g, and the index of food diversity was 1.58. After the flood, the average length of fish caught was 7.5 cm L-T, weight 4.1 g, and the index of the food diversity was 1.36. It was evident that after the flood kingfishers were forced to hunt significantly larger prey. Six fish species (Gobio gobio, Squalius cephalus, Perca fiuviatilis, Scardinius erythrophthalmus, Rutilus rutilus, Pseudorasbora parva) which were hunted both before and after the flood composed 96.5 and 99.8% of the catch (by numbers). Surprisingly, the impact of floods may not always be reflected in the species composition of the diet of fish-eating birds, it mostly depends on the presence of fish broadly occurring in the stream, natural stability of the fish stock and on the composition of the fish assemblage in the upstream catchment area.

Název v anglickém jazyce

The impact of a catastrophic flood on species and size composition of the diet of fish-eating birds

Popis výsledku anglicky

Floods in June 2013 affected significant portions of the Czech Republic (total damages amounted similar to 600 millions of euro). This study examines the impact of catastrophic flood on the species composition and size of fish prey in the diet of the common kingfisher (Alcedo atthis), a fish-eating bird, nesting and hunting on Botic stream (Prague, Czech Republic) in 2013. Hundred and forty years water (flow 74.5 m(3) s(-1)) caused considerable damage to property and it is likely that the character and size composition of biota, especially fish, changed. This should be reflected naturally in the diet of resident kingfishers. The diet of kingfishers before and after the flood were investigated from the mass of regurgitated pellets, which were collected from the nest tunnel and chamber immediately after the successful breeding period before and after the flood event. Before the flood (normal situation, flow 0.4-1.5 m(3) s(-1)), the average length of fish caught was 6.5 cm L-T (total length), average weight 2.6 g, and the index of food diversity was 1.58. After the flood, the average length of fish caught was 7.5 cm L-T, weight 4.1 g, and the index of the food diversity was 1.36. It was evident that after the flood kingfishers were forced to hunt significantly larger prey. Six fish species (Gobio gobio, Squalius cephalus, Perca fiuviatilis, Scardinius erythrophthalmus, Rutilus rutilus, Pseudorasbora parva) which were hunted both before and after the flood composed 96.5 and 99.8% of the catch (by numbers). Surprisingly, the impact of floods may not always be reflected in the species composition of the diet of fish-eating birds, it mostly depends on the presence of fish broadly occurring in the stream, natural stability of the fish stock and on the composition of the fish assemblage in the upstream catchment area.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10613 - Zoology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Acta Oecologica-International Journal of Ecology

ISSN

1146-609X

e-ISSN

—

Svazek periodika

108

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

000577148600003

EID výsledku v databázi Scopus

2-s2.0-85091228202