NDLI: Non-native spruce plantations represent a suitable habitat for Tengmalm’s Owl (Aegolius funereus) in the Czech Republic, Central Europe

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Non-native spruce plantations represent a suitable habitat for Tengmalm’s Owl (Aegolius funereus) in the Czech Republic, Central Europe

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Non-native spruce plantations represent a suitable habitat for Tengmalm’s Owl (Aegolius funereus) in the Czech Republic, Central Europe

Content Provider	Springer Nature Link
Author	Zárybnická, Markéta Riegert, Jan Št’astný, Karel
Copyright Year	2014
Abstract	Anthropogenic activity can lead to deforestation and subsequent dramatic impacts on forest-dwelling animal species. In this study, we investigated the habitat use of a forest raptor (Tengmalm’s Owl Aegolius funereus) in an air-polluted area of the Ore Mountains (Czech Republic) that has been restored by non-native spruce. Based on a 14-year Tengmalm’s Owl nest-box breeding dataset, we found that the percentage of native Norway Spruce forest was higher for occupied nest boxes than for unoccupied ones within close surroundings of the nest (buffer radius of 25 m). Meanwhile, the percentage of non-native Blue Spruce (originally from Northern America) was higher for occupied nest boxes than for unoccupied ones within the home-range breeding area (buffer radius of 750 m). Moreover, the surroundings of non-predated nests (radius of 750 m) showed a higher percentage of Blue Spruce and a lower percentage of deciduous trees than surroundings of nests predated by Pine Martens. Although small mammal availability was not affected by habitat categories, we found a positive correlation between the percentage of Apodemus mice in the diet of owls and the percentages of both Blue Spruce and open forest area within the foraging area radius (750 m). We suggest that adult owls and young fledglings use remnants of tall, old-growth Norway Spruce forests as a safe refuge against avian predators, while secondary stands of non-native Blue Spruce are suitable for hunting both main prey types (Apodemus mice and Microtus voles), and also ensure good protection against nest predation by Pine Martens. Plantagen nicht-heimischer Fichten sind geeigneter Lebensraum für den Rauhfußkauz ( Aegolius funereus ) in der Tschechischen Republik, Zentraleuropa `Entwaldung durch menschliches Einwirken kann schwerwiegende Auswirkungen auf waldlebende Tierarten haben. In dieser Studie untersuchten wir die Raumnutzung eines waldlebenden Beutegreifers (Rauhfußkauz Aegolius funereus) in einem luftverschmutzten Gebiet des Erzgebirges (Tschechien), das durch nicht-heimische Fichten aufgeforstet wurde. Anhand eines 14 Jahre umfassenden Datensatzes von in Nistkästen brütenden Raufußkäuzen, fanden wir bei bewohnten Nistkästen einen höheren Anteil der einheimischen Gemeinen Fichte im direkten Umfeld des Nestes (Pufferradius: 25 m) als bei unbewohnten. Der Anteil der nicht-heimischen Stech-Fichte (ursprünglich aus Nordamerika stammend) war hingegen im gesamten Aktionsraum (Pufferradius: 750 m) um bewohnte Nistkästen höher als um unbewohnte. Des Weiteren waren im Umfeld um nicht geräuberte Nester (Radius: 750 m) ein größerer Anteil Stech-Fichten und ein geringerer Anteil Laubbäume zu verzeichnen, als im Umfeld von Nestern, die von Baummardern geräubert wurden. Obwohl die Baumzusammensetzung keinen Einfluss auf die Verfügbarkeit von kleinen Säugetieren hatte, stellten wir einen positiven Zusammenhang zwischen dem Anteil an Waldmäusen im Nahrungsspektrum der Käuze und dem Anteil an Stech-Fichten sowie offenen Waldgebieten im Aktionsraum (750 m) fest. Wir nehmen an, dass erwachsene Käuze und junge Flügglinge die Überreste großgewachsener Altbestände Gemeiner Fichten als sicheren Rückzugsort vor größeren Beutegreifern nutzen, während neuere Bestände nicht-heimischer Stech-Fichten als gutes Jagdrevier für ihre beiden häufigsten Beutegruppen (Waldmäuse und Feldmäuse) und auch als Schutz gegen Nesträuber wie den Baummarder dienen.
Starting Page	457
Ending Page	468
Page Count	12
File Format	PDF
ISSN	21937192
Journal	Journal für Ornithologie
Volume Number	156
Issue Number	2
e-ISSN	21937206
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-12-16
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Aegolius funereus Habitat use Air pollution Non-native habitat Reproductive success Nest predation Martes martes Zoology Animal Ecology Evolutionary Biology
Content Type	Text
Resource Type	Article

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Diet composition and prey diversity of Tengmalm’s owl Aegolius funereus (Linnaeus, 1758; Aves: Strigidae) in central Serbia during breeding

Diet composition and prey diversity of Tengmalm’s owl Aegolius funereus (Linnaeus, 1758; Aves: Strigidae) in central Serbia during breeding

Diet composition and prey diversity of Tengmalm’s owl Aegolius funereus (Linnaeus, 1758; Aves: Strigidae) in central Serbia during breeding

Can migrating tengmalm’s owls aegolius funereus be reliably sexed.

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The role of Apodemus mice and Microtus voles in the diet of the Tengmalm’s owl in Central Europe

Intersexual difference in early natal dispersal: abrupt departure by females and gradual emigration by males in Tengmalm’s Owl Aegolius funereus

Factors Affecting Growth of Tengmalm’s Owl (Aegolius funereus) Nestlings: Prey Abundance, Sex and Hatching Order

Predation of boreal owl nests by pine martens in the boreal forest does not vary as predicted by the alternative prey hypothesis.

Non-native spruce plantations represent a suitable habitat for Tengmalm’s Owl (Aegolius funereus) in the Czech Republic, Central Europe

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