Urbanisation-induced changes in the morphology of birds from a tropical city

Urbanisation is accompanied by major environmental changes that impact the structure and functioning of communities and ecosystems, bringing new selective regimes for animal species and for eco-evolutionary dynamics. We aimed to evaluate whether urban intensification promotes ecomorphological change...

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Published inEmu Vol. 123; no. 4; pp. 291 - 302
Main Authors Santos, Eduardo Guimarães, Pompermaier, Vinicius Tirelli, Wiederhecker, Helga Correa, Marini, Miguel Ângelo
Format Journal Article
LanguageEnglish
Published 02.10.2023
Subjects
beak
body weight
Brazil
emus
humans
insectivores
omnivores
ornithology
urbanization
Brazil
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Abstract Urbanisation is accompanied by major environmental changes that impact the structure and functioning of communities and ecosystems, bringing new selective regimes for animal species and for eco-evolutionary dynamics. We aimed to evaluate whether urban intensification promotes ecomorphological changes in birds from a large city in Central Brazil. Analyses were performed on a set of 1314 individuals of 35 species, captured along a gradient of urban intensification. We found significant morphological changes associated with urban intensification by evaluating ten ecomorphological traits and body mass of the species assemblage. Beak length showed the most dramatic changes, and was significantly shorter as a function of urban intensification, mainly in individuals of insectivorous and omnivorous species. These results reinforce the notion that environmental changes caused by human activities in dense urban environments promote new selective pressures in resident bird species.
AbstractList Urbanisation is accompanied by major environmental changes that impact the structure and functioning of communities and ecosystems, bringing new selective regimes for animal species and for eco-evolutionary dynamics. We aimed to evaluate whether urban intensification promotes ecomorphological changes in birds from a large city in Central Brazil. Analyses were performed on a set of 1314 individuals of 35 species, captured along a gradient of urban intensification. We found significant morphological changes associated with urban intensification by evaluating ten ecomorphological traits and body mass of the species assemblage. Beak length showed the most dramatic changes, and was significantly shorter as a function of urban intensification, mainly in individuals of insectivorous and omnivorous species. These results reinforce the notion that environmental changes caused by human activities in dense urban environments promote new selective pressures in resident bird species.
Author Santos, Eduardo Guimarães
Wiederhecker, Helga Correa
Pompermaier, Vinicius Tirelli
Marini, Miguel Ângelo
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  givenname: Miguel Ângelo
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  surname: Marini
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  organization: Institute of Biological Sciences, Department of Zoology, University of Brasília, Brasília, Brazil
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SubjectTerms beak
body weight
Brazil
emus
humans
insectivores
omnivores
ornithology
urbanization
Title Urbanisation-induced changes in the morphology of birds from a tropical city
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