Advanced

Butterfly species’ responses to urbanization : differing effects of human population density and built-up area

Kuussaari, Mikko ; Toivonen, Marjaana ; Heliölä, Janne ; Pöyry, Juha ; Mellado, Jorge ; Ekroos, Johan LU ; Hyyryläinen, Vesa ; Vähä-Piikkiö, Inkeri and Tiainen, Juha (2020) In Urban Ecosystems
Abstract

Good knowledge on how increasing urbanization affects biodiversity is essential in order to preserve biodiversity in urban green spaces. We examined how urban development affects species richness and total abundance of butterflies as well as the occurrence and abundance of individual species within the Helsinki metropolitan area in Northern Europe. Repeated butterfly counts in 167 separate 1-km-long transects within Helsinki covered the entire urbanization gradient, quantified by human population density and the proportion of built-up area (within a 50-m buffer surrounding each butterfly transect). We found consistently negative effects of both human population density and built-up area on all studied butterfly variables, though... (More)

Good knowledge on how increasing urbanization affects biodiversity is essential in order to preserve biodiversity in urban green spaces. We examined how urban development affects species richness and total abundance of butterflies as well as the occurrence and abundance of individual species within the Helsinki metropolitan area in Northern Europe. Repeated butterfly counts in 167 separate 1-km-long transects within Helsinki covered the entire urbanization gradient, quantified by human population density and the proportion of built-up area (within a 50-m buffer surrounding each butterfly transect). We found consistently negative effects of both human population density and built-up area on all studied butterfly variables, though butterflies responded markedly more negatively to increasing human population density than to built-up area. Responses in butterfly species richness and total abundance showed higher variability in relation to proportion of built-up area than to human density, especially in areas of high human density. Increasing human density negatively affected both the abundance and the occurrence of 47% of the 19 most abundant species, whereas, for the proportion of built-up area, the corresponding percentages were 32% and 32%, respectively. Species with high habitat specificity and low mobility showed higher sensitivity to urbanization (especially high human population density) than habitat generalists and mobile species that dominated the urban butterfly communities. Our results suggest that human population density provides a better indicator of urbanization effects on butterflies compared to the proportion of built-up area. The generality of this finding should be verified in other contexts and taxonomic groups.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
in press
subject
keywords
Biotic homogenization, Butterfly species responses, Human population density, Proportion of built-up area, Species traits, Urbanization gradient
in
Urban Ecosystems
publisher
Kluwer Academic Publishers
external identifiers
  • scopus:85091154307
ISSN
1083-8155
DOI
10.1007/s11252-020-01055-6
language
English
LU publication?
yes
id
64c48470-dfd5-4240-8dc6-81192c9ba045
date added to LUP
2020-11-20 15:06:51
date last changed
2020-11-20 15:06:51
@article{64c48470-dfd5-4240-8dc6-81192c9ba045,
  abstract     = {<p>Good knowledge on how increasing urbanization affects biodiversity is essential in order to preserve biodiversity in urban green spaces. We examined how urban development affects species richness and total abundance of butterflies as well as the occurrence and abundance of individual species within the Helsinki metropolitan area in Northern Europe. Repeated butterfly counts in 167 separate 1-km-long transects within Helsinki covered the entire urbanization gradient, quantified by human population density and the proportion of built-up area (within a 50-m buffer surrounding each butterfly transect). We found consistently negative effects of both human population density and built-up area on all studied butterfly variables, though butterflies responded markedly more negatively to increasing human population density than to built-up area. Responses in butterfly species richness and total abundance showed higher variability in relation to proportion of built-up area than to human density, especially in areas of high human density. Increasing human density negatively affected both the abundance and the occurrence of 47% of the 19 most abundant species, whereas, for the proportion of built-up area, the corresponding percentages were 32% and 32%, respectively. Species with high habitat specificity and low mobility showed higher sensitivity to urbanization (especially high human population density) than habitat generalists and mobile species that dominated the urban butterfly communities. Our results suggest that human population density provides a better indicator of urbanization effects on butterflies compared to the proportion of built-up area. The generality of this finding should be verified in other contexts and taxonomic groups.</p>},
  author       = {Kuussaari, Mikko and Toivonen, Marjaana and Heliölä, Janne and Pöyry, Juha and Mellado, Jorge and Ekroos, Johan and Hyyryläinen, Vesa and Vähä-Piikkiö, Inkeri and Tiainen, Juha},
  issn         = {1083-8155},
  language     = {eng},
  publisher    = {Kluwer Academic Publishers},
  series       = {Urban Ecosystems},
  title        = {Butterfly species’ responses to urbanization : differing effects of human population density and built-up area},
  url          = {http://dx.doi.org/10.1007/s11252-020-01055-6},
  doi          = {10.1007/s11252-020-01055-6},
  year         = {2020},
}