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<p>Urbanization generally has a negative effect on wildlife, including bats. The decline in particular insectivorous bat species, richness and abundance in urban environments is well known; however, it is not clear the relative contribution of urbanization and food availability to explain the diversity or urban insectivorous bats. To explain this, we evaluated the effect of food resource availability, urban noise (dB) and artificial light (lux), as a proxy to urbanization, on insectivorous bats diversity. To evaluate which of these drivers best explain activity, richness, diversity and evenness of urban insectivorous bats, acoustic sampling of the bat community was conducted in three habitat types with varying degrees of urbanization (urban, urban park, transition) in Morelia, Michoacán. Our results showed a diverse community (14 species and 3 genera), where the most abundant bat species, regardless of the degree of disturbance, were fast-flying well adapted to urban environments species such as <i>Promops centralis</i> and those from the genus <i>Molossus</i>. Bat activity was higher in urban parks, richness did not differ among degrees of urbanization, while diversity and evenness were higher in transition sites. Despite of this, differences among conditions were evident in species composition. Bat activity, richness, diversity, and evenness were best explained by the availability of food resources, possibly related to certain degrees of urbanization holding not only particular food resources, but also abundant and exclusive bat species preferring those food resources. Our results indicate that food resource availability may be an important condition associated with variation in urban bat communities, whereas urban conditions such as artificial light and noise showed comparatively lower explanatory support.</p>

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Food or urbanization? assessing the diversity of urban insectivorous bats in a Neotropical city

  • 期刊论文

  • 发表日期：

    2026年7月2日

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  • Rebeca Selene Miguel-Méndez,
  • M. Cristina MacSwiney G.,
  • Víctor Rosas-Guerrero,
  • Yvonne Herrerías-Diego,
  • Miguel Angel Salinas-Melgoza,
  • Alejandro Salinas-Melgoza

摘要

Urbanization generally has a negative effect on wildlife, including bats. The decline in particular insectivorous bat species, richness and abundance in urban environments is well known; however, it is not clear the relative contribution of urbanization and food availability to explain the diversity or urban insectivorous bats. To explain this, we evaluated the effect of food resource availability, urban noise (dB) and artificial light (lux), as a proxy to urbanization, on insectivorous bats diversity. To evaluate which of these drivers best explain activity, richness, diversity and evenness of urban insectivorous bats, acoustic sampling of the bat community was conducted in three habitat types with varying degrees of urbanization (urban, urban park, transition) in Morelia, Michoacán. Our results showed a diverse community (14 species and 3 genera), where the most abundant bat species, regardless of the degree of disturbance, were fast-flying well adapted to urban environments species such as Promops centralis and those from the genus Molossus. Bat activity was higher in urban parks, richness did not differ among degrees of urbanization, while diversity and evenness were higher in transition sites. Despite of this, differences among conditions were evident in species composition. Bat activity, richness, diversity, and evenness were best explained by the availability of food resources, possibly related to certain degrees of urbanization holding not only particular food resources, but also abundant and exclusive bat species preferring those food resources. Our results indicate that food resource availability may be an important condition associated with variation in urban bat communities, whereas urban conditions such as artificial light and noise showed comparatively lower explanatory support.