Green roof performance towards good habitat for butterflies in the compact city
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Published source details
Lee L.-H. & Lin J.-C. (2015) Green roof performance towards good habitat for butterflies in the compact city. International Journal of Biology, 7, 103-112.
Published source details Lee L.-H. & Lin J.-C. (2015) Green roof performance towards good habitat for butterflies in the compact city. International Journal of Biology, 7, 103-112.
Actions
This study is summarised as evidence for the following.
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Establish “green infrastructure” in urban areas Action Link |
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Establish “green infrastructure” in urban areas
A replicated, site comparison study in 2011–2012 on 11 green roofs in Taipei City, Taiwan (Lee & Lin 2015) found that green roofs had a lower abundance and species richness of butterflies than urban parks, but the abundance of butterflies was higher on older green roofs with more nectar plant species in a larger area. On green roofs, both the abundance (514 individuals) and species richness (12 species) of butterflies was lower than in urban parks (abundance: 3,141–8,882 butterflies; richness: 50–109 species). However, the abundance of butterflies was higher on green roofs established longer ago, and on roofs with more nectar plant species covering a larger area (data presented as model results). Eleven green roofs (95–590 m2, 7–34 m above ground), established 13–46 months before the study, contained a total of 34 butterfly nectar plant species (1–16 species/roof, covering 2–41 m2). Two urban parks (13–26 ha), established 18–25 years before the study, contained 20–45 nectar plant species. From August 2011–May 2012, butterflies were surveyed for four hours twice/month on each roof. From July 2008–June 2009, butterflies were surveyed in one urban park, and from March 2011–February 2012 they were surveyed in a second park (no further details provided).
(Summarised by: Andrew Bladon)
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