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Intensive management reduces butterfly diversity over time in urban green spaces

Aguilera, Guillermo; Ekroos, Johan LU ; Persson, Anna S. LU ; Pettersson, Lars B. LU and Öckinger, Erik LU (2019) In Urban Ecosystems 22(2). p.335-344
Abstract

Loss and fragmentation of semi-natural grasslands have had negative consequences for grassland biodiversity, such as butterflies. Urban parks and other urban green spaces have so far largely been overlooked as suitable butterfly habitats, although they could potentially sustain diverse butterfly populations over time. We analysed the temporal change in butterfly species assemblages in urban green spaces in the city of Malmö, Southern Sweden. We studied changes in species richness and abundance of butterflies between 2006 and 2015 in 20 public urban green spaces, characterized by different management regimes. We sampled butterflies in traditional parks with intense grass cutting regimes, in semi-natural grasslands mowed only a few times... (More)

Loss and fragmentation of semi-natural grasslands have had negative consequences for grassland biodiversity, such as butterflies. Urban parks and other urban green spaces have so far largely been overlooked as suitable butterfly habitats, although they could potentially sustain diverse butterfly populations over time. We analysed the temporal change in butterfly species assemblages in urban green spaces in the city of Malmö, Southern Sweden. We studied changes in species richness and abundance of butterflies between 2006 and 2015 in 20 public urban green spaces, characterized by different management regimes. We sampled butterflies in traditional parks with intense grass cutting regimes, in semi-natural grasslands mowed only a few times per year, and in un-managed or irregularly managed ruderal sites. We found a slight increase in the total number of butterfly species in the study area, but a general decline in local species numbers in urban green spaces. Traditional urban parks had the greatest loss of species over time, and altogether the lowest number of species. In contrast, semi-natural parks and ruderal sites had higher numbers of butterfly species and also lost fewer species over time. Our study shows that intensive management strategies in urban green spaces have a negative impact on butterfly assemblages over time. We suggest that less intensive management strategies can be used to create high-quality areas for flower-visiting insects in urban green spaces, possibly in combination with planting larval host plant species, depending on the park type and design.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lepidoptera, Park management, Species richness, Temporal decline, Urban green space
in
Urban Ecosystems
volume
22
issue
2
pages
335 - 344
publisher
Kluwer Academic Publishers
external identifiers
  • scopus:85056268779
ISSN
1083-8155
DOI
10.1007/s11252-018-0818-y
language
English
LU publication?
yes
id
e0b69d51-c54a-4dd1-8b4d-e6f3a03ccbd1
date added to LUP
2018-11-22 09:43:33
date last changed
2019-08-14 04:27:50
@article{e0b69d51-c54a-4dd1-8b4d-e6f3a03ccbd1,
  abstract     = {<p>Loss and fragmentation of semi-natural grasslands have had negative consequences for grassland biodiversity, such as butterflies. Urban parks and other urban green spaces have so far largely been overlooked as suitable butterfly habitats, although they could potentially sustain diverse butterfly populations over time. We analysed the temporal change in butterfly species assemblages in urban green spaces in the city of Malmö, Southern Sweden. We studied changes in species richness and abundance of butterflies between 2006 and 2015 in 20 public urban green spaces, characterized by different management regimes. We sampled butterflies in traditional parks with intense grass cutting regimes, in semi-natural grasslands mowed only a few times per year, and in un-managed or irregularly managed ruderal sites. We found a slight increase in the total number of butterfly species in the study area, but a general decline in local species numbers in urban green spaces. Traditional urban parks had the greatest loss of species over time, and altogether the lowest number of species. In contrast, semi-natural parks and ruderal sites had higher numbers of butterfly species and also lost fewer species over time. Our study shows that intensive management strategies in urban green spaces have a negative impact on butterfly assemblages over time. We suggest that less intensive management strategies can be used to create high-quality areas for flower-visiting insects in urban green spaces, possibly in combination with planting larval host plant species, depending on the park type and design.</p>},
  author       = {Aguilera, Guillermo and Ekroos, Johan and Persson, Anna S. and Pettersson, Lars B. and Öckinger, Erik},
  issn         = {1083-8155},
  keyword      = {Lepidoptera,Park management,Species richness,Temporal decline,Urban green space},
  language     = {eng},
  number       = {2},
  pages        = {335--344},
  publisher    = {Kluwer Academic Publishers},
  series       = {Urban Ecosystems},
  title        = {Intensive management reduces butterfly diversity over time in urban green spaces},
  url          = {http://dx.doi.org/10.1007/s11252-018-0818-y},
  volume       = {22},
  year         = {2019},
}