More insect species are supported by green roofs near public gardens

Abstract

Rapid urbanization is among the factors that decrease insect diversity. However, by offering suitable habitats, green roofs could lessen this adverse effect. Certain factors, like a nearby public garden, could be useful predictor variables to analyze to what extent green roofs can support insect communities. The study aimed to measure the insect diversity on intensive green roofs located near public gardens and on more isolated green roofs, within an urban setting. Insect species richness, abundance, and assemblages on the green roofs near public gardens differed from those on isolated green roofs. Results indicate that green roofs near public gardens will host more species, especially pollinators, consequently lessening urbanization’s negative effect. To properly understand how landscape factors impact insect communities on green roofs, future studies on green roofs’ biodiversity should consider public gardens and their influence on urban biodiversity.Implications for insect conservationThe planning and establishment of a green roof near public gardens would probably enhance biodiversity conservation in an urban setting.