Vocal activity of the Central European Boreal Owl population in relation to varying environmental conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F19%3A43899150" target="_blank" >RIV/60076658:12310/19:43899150 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41330/19:79410

Výsledek na webu

<a href="https://lintulehti.birdlife.fi:8443/pdf/artikkelit/5310/tiedosto/of_96_1-12_artikkelit_5310.pdf" target="_blank" >https://lintulehti.birdlife.fi:8443/pdf/artikkelit/5310/tiedosto/of_96_1-12_artikkelit_5310.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Vocal activity of the Central European Boreal Owl population in relation to varying environmental conditions

Popis výsledku v původním jazyce

Vocal activity is one of the main attributes that enables assessment of the presence and abundance of animal populations. However, the factors affecting vocal activity are rarely studied, especially in owls. We studied the vocal activity of Boreal Owl (Aegolius funereus) using acoustic monitoring in relation to environmental factors in Central Europe (Czech Republic), over an area of 100 km(2). We analysed a total of 1,310 hours of sound recordings collected over two years (2015 and 2016) at the turn of March/April and April/May. The frequency of sampling points in which we recorded Boreal Owl vocalizations varied from 0.17 to 0.59 and was higher in the year of increased prey abundance (2015) and earlier in the breeding season (March/April). The duration of Boreal Owl vocal activity varied from 1 to 60 minutes per hour and was related to temporal factors. In particular, the duration of Boreal Owl vocalization increased late in the breeding season (April/May) and in the year of higher prey abundance (2015), and it showed two peaks of vocal activity during the night. Weather conditions, the occurrence of nesting Boreal Owl pairs, and the vocalization of other owl species had no effect on the duration of Boreal Owl vocalization. These findings highlight the importance of between-year, seasonal, and within-night variability in the Boreal Owl vocal activity and document that acoustic monitoring based on sound recorders works well for monitoring of nocturnal bird species.

Název v anglickém jazyce

Vocal activity of the Central European Boreal Owl population in relation to varying environmental conditions

Popis výsledku anglicky

Vocal activity is one of the main attributes that enables assessment of the presence and abundance of animal populations. However, the factors affecting vocal activity are rarely studied, especially in owls. We studied the vocal activity of Boreal Owl (Aegolius funereus) using acoustic monitoring in relation to environmental factors in Central Europe (Czech Republic), over an area of 100 km(2). We analysed a total of 1,310 hours of sound recordings collected over two years (2015 and 2016) at the turn of March/April and April/May. The frequency of sampling points in which we recorded Boreal Owl vocalizations varied from 0.17 to 0.59 and was higher in the year of increased prey abundance (2015) and earlier in the breeding season (March/April). The duration of Boreal Owl vocal activity varied from 1 to 60 minutes per hour and was related to temporal factors. In particular, the duration of Boreal Owl vocalization increased late in the breeding season (April/May) and in the year of higher prey abundance (2015), and it showed two peaks of vocal activity during the night. Weather conditions, the occurrence of nesting Boreal Owl pairs, and the vocalization of other owl species had no effect on the duration of Boreal Owl vocalization. These findings highlight the importance of between-year, seasonal, and within-night variability in the Boreal Owl vocal activity and document that acoustic monitoring based on sound recorders works well for monitoring of nocturnal bird species.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10615 - Ornithology

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Ornis Fennica

ISSN

0030-5685

e-ISSN

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Svazek periodika

96

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

FI - Finská republika

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

000459452900001

EID výsledku v databázi Scopus

2-s2.0-85064465907