Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator

Urbanization has reshaped ecosystems and changed natural processes, driving an intense transformation of biomes, biotic community composition and diversity. Despite the growing interest in studying urban ecology over the last decades, the consequences of these changes on species occupying these ecos...

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Autores: Romero Vidal, Pedro, Luna Fernández, Álvaro, Fernández Gómez, Lola, Navarro, Joan, Palma, Antonio, Tella, José L., Carrete, Martina
Formato: artículo
Fecha de publicación:2023
País:España
Recursos:Universidad Europea (UEM)
Repositorio:ABACUS. Repositorio de Producción Científica
Idioma:inglés
OAI Identifier:oai:abacus.universidadeuropea.com:11268/12265
Acesso em linha:http://hdl.handle.net/11268/12265
Access Level:acceso abierto
Palavra-chave:Ornitología
Ecología
Diseño urbano
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spelling Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predatorRomero Vidal, PedroLuna Fernández, ÁlvaroFernández Gómez, LolaNavarro, JoanPalma, AntonioTella, José L.Carrete, MartinaOrnitologíaEcologíaDiseño urbanoUrbanization has reshaped ecosystems and changed natural processes, driving an intense transformation of biomes, biotic community composition and diversity. Despite the growing interest in studying urban ecology over the last decades, the consequences of these changes on species occupying these ecosystems are not yet fully understood. Trophic generalism and tolerance to human disturbance have been proposed as two key traits in the colonization of urban environments. However, most studies focused on species’ average traits, paying less attention to the potential role of inter-individual variability. Here, we examined diet specialization in urban and rural breeding pairs, as well as its relationship with individual behaviour and intraspecific competition, using the burrowing owl as a study model. Our results show that both urban and rural breeding pairs behaved as trophic specialists. The diet of burrowing owl breeding pairs followed a gradient from coleopteran- to micromammal-dominated, which is related to individual behaviour (bolder individuals consuming more coleopterans than shyer ones). Besides, pairs distant from others showed a more diverse diet than those experiencing higher levels of intraspecific competition. Models fitted separately for each habitat showed that the proportion of micromammals in the diet of urban breeding pairs was related to their behavior, while the diet of rural pairs was not affected by individual behavior but by intraspecific competition. However, despite the strong selection of tame and more explorative individuals in urban environments and the higher density they reach in this habitat type, they did not differ in their degree of diet specialization from rural conspecifics. Although it would be necessary to evaluate prey availability on a small scale, our results suggest that burrowing owl breeding pairs behave as specialists, despite the generalist character of the species, and that this specialization is not affected by the occupation of urban environments but to individual behaviour and intraspecific competition.20232023-09-0420232023-01-0120232023-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/11268/12265reponame:ABACUS. Repositorio de Producción Científicainstname:Universidad Europea (UEM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:abacus.universidadeuropea.com:11268/122652026-06-11T12:41:27Z
dc.title.none.fl_str_mv Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
title Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
spellingShingle Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
Romero Vidal, Pedro
Ornitología
Ecología
Diseño urbano
title_short Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
title_full Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
title_fullStr Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
title_full_unstemmed Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
title_sort Intraspecific competition and individual behaviour but not urbanization affect the dietary patterns of a generalist avian predator
dc.creator.none.fl_str_mv Romero Vidal, Pedro
Luna Fernández, Álvaro
Fernández Gómez, Lola
Navarro, Joan
Palma, Antonio
Tella, José L.
Carrete, Martina
author Romero Vidal, Pedro
author_facet Romero Vidal, Pedro
Luna Fernández, Álvaro
Fernández Gómez, Lola
Navarro, Joan
Palma, Antonio
Tella, José L.
Carrete, Martina
author_role author
author2 Luna Fernández, Álvaro
Fernández Gómez, Lola
Navarro, Joan
Palma, Antonio
Tella, José L.
Carrete, Martina
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Ornitología
Ecología
Diseño urbano
topic Ornitología
Ecología
Diseño urbano
description Urbanization has reshaped ecosystems and changed natural processes, driving an intense transformation of biomes, biotic community composition and diversity. Despite the growing interest in studying urban ecology over the last decades, the consequences of these changes on species occupying these ecosystems are not yet fully understood. Trophic generalism and tolerance to human disturbance have been proposed as two key traits in the colonization of urban environments. However, most studies focused on species’ average traits, paying less attention to the potential role of inter-individual variability. Here, we examined diet specialization in urban and rural breeding pairs, as well as its relationship with individual behaviour and intraspecific competition, using the burrowing owl as a study model. Our results show that both urban and rural breeding pairs behaved as trophic specialists. The diet of burrowing owl breeding pairs followed a gradient from coleopteran- to micromammal-dominated, which is related to individual behaviour (bolder individuals consuming more coleopterans than shyer ones). Besides, pairs distant from others showed a more diverse diet than those experiencing higher levels of intraspecific competition. Models fitted separately for each habitat showed that the proportion of micromammals in the diet of urban breeding pairs was related to their behavior, while the diet of rural pairs was not affected by individual behavior but by intraspecific competition. However, despite the strong selection of tame and more explorative individuals in urban environments and the higher density they reach in this habitat type, they did not differ in their degree of diet specialization from rural conspecifics. Although it would be necessary to evaluate prey availability on a small scale, our results suggest that burrowing owl breeding pairs behave as specialists, despite the generalist character of the species, and that this specialization is not affected by the occupation of urban environments but to individual behaviour and intraspecific competition.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-09-04
2023
2023-01-01
2023
2023-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/11268/12265
url http://hdl.handle.net/11268/12265
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 Internacional
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:ABACUS. Repositorio de Producción Científica
instname:Universidad Europea (UEM)
instname_str Universidad Europea (UEM)
reponame_str ABACUS. Repositorio de Producción Científica
collection ABACUS. Repositorio de Producción Científica
repository.name.fl_str_mv
repository.mail.fl_str_mv
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