Diet composition in the Tengmalm's Owl Aegolius funereus: a comparison of camera surveillance and pellet analysis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F11%3A43871811" target="_blank" >RIV/60076658:12310/11:43871811 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Diet composition in the Tengmalm's Owl Aegolius funereus: a comparison of camera surveillance and pellet analysis

Popis výsledku v původním jazyce

During a two-year study in Central Europe, we used a combination of pellet analysis and camera recordings to assess the diet composition of Tengmalm's Owls during the breeding season, with regards to availability of the main prey components in the field.The diet of the owls consisted mainly of voles (Arvicolidae), mice (Muridae) and shrews (Soricidae), and their proportion in the diet reflected their local abundances in the field. Pellet analysis allowed us to determine 40.2 (+/- 6.9 SD)% in 2004 and 46.4 (+/- 14.7 SD)% in 2006 of all delivered prey items recorded by cameras. We determined 77.1 (+/- 17.1 SD)% in 2004 and 80.2 (+/- 12.5 SD)% in 2006 of the prey items recorded by camera monitoring. Pellet analysis underestimated the proportions of all main diet components, but the differences were significant only for the proportion of voles and birds. The underestimation of voles may have been a consequence of their decapitation before delivery to the nest. We regularly recorded decapi

Název v anglickém jazyce

Diet composition in the Tengmalm's Owl Aegolius funereus: a comparison of camera surveillance and pellet analysis

Popis výsledku anglicky

During a two-year study in Central Europe, we used a combination of pellet analysis and camera recordings to assess the diet composition of Tengmalm's Owls during the breeding season, with regards to availability of the main prey components in the field.The diet of the owls consisted mainly of voles (Arvicolidae), mice (Muridae) and shrews (Soricidae), and their proportion in the diet reflected their local abundances in the field. Pellet analysis allowed us to determine 40.2 (+/- 6.9 SD)% in 2004 and 46.4 (+/- 14.7 SD)% in 2006 of all delivered prey items recorded by cameras. We determined 77.1 (+/- 17.1 SD)% in 2004 and 80.2 (+/- 12.5 SD)% in 2006 of the prey items recorded by camera monitoring. Pellet analysis underestimated the proportions of all main diet components, but the differences were significant only for the proportion of voles and birds. The underestimation of voles may have been a consequence of their decapitation before delivery to the nest. We regularly recorded decapi

Druh

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

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

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

88

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

FI - Finská republika

Počet stran výsledku

7

Strana od-do

147-153

Kód UT WoS článku

000296039900004

EID výsledku v databázi Scopus

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