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001-es BibID:BIBFORM124011
035-os BibID:(WoS)001311316500001 (Scopus)85203645578
Első szerző:Achille, Gabriele
Cím:Dietary Shift in a Barn Owl (Tyto alba) Population Following Partial Abandonment of Cultivated Fields (Central Apennine Hills, Italy) / Gabriele Achille, Dan Gafta, Csaba Szabó, Fadia Canzian, Nazzareno Polini
Dátum:2024
ISSN:2076-2615
Megjegyzések:While most studies focused on the impact of intensive agriculture on the barn owl's diet, little is known about the effect of cropland abandonment. We compared the taxon composition/evenness and feeding guild structure of small mammal prey identified in pellets collected before (2004) and after (2012) the abandonment of 9% of cultivated fields within a cultural landscape. Data on prey abundance per pellet were analysed through non-metric multidimensional scaling and permutational, paired tests. Prey taxon evenness in 2012 was significantly lower than in 2004. That induced a shift in prey taxon composition as indicated by the significantly lower dietary similarity compared with the random expectation. The increasing and declining abundance of Murinae and Crocidurinae, respectively, had the largest contribution to the differentiation of the diet spectrum. Insectivorous prey was significantly more abundant in 2004 compared to 2012, while the opposite was true for omnivorous prey. Our results suggest that even a small fraction of abandoned crops in the landscape might induce a detectable shift in the barn owl's food niche. The dietary effects are similar to those observed after agricultural intensification, that is, an increase in the abundance of generalists to the detriment of specialist mammal prey.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
abandoned fields
barn owl
diet similarity
pellets
prey feeding guilds
prey taxon evenness
small mammals
Megjelenés:Animals. - 14 : 17 (2024), p. 1-11. -
További szerzők:Gafta, Dan Szabó Csaba (1968-) (agrármérnök) Canzian, Fadia Polini, Nazzareno
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