Increasing the resistance of Mediterranean extensive green roofs by using native plants from old roofs and walls

• Author(s): Esfahani, Razieh ; Paço, Teresa ; Martins, Diana ; Arsénio, Pedro
• Date: 2022
• Persistent ID: http://hdl.handle.net/10400.5/26868
• Origin: Repositório da Universidade de Lisboa
• Subject(s): aesthetic value; green roofs; irrigation levels; plants diversity; Southern Europe
• Document Type: Journal article
• Language: English
• Contributor(s): Repositório Científico de Acesso Aberto da ULisboa

Description

While the use of extensive green roofs (EGRs) is increasing worldwide, Mediterranean conditions complicate EGR design due to their long, dry summers with intense solar radiation. Aim: To inform sustainable EGR design for Mediterranean regions, we explored the use of resilient, droughttolerant species in experimental EGRs. Methods: We selected four native species that are known to spontaneously establish themselves on urban structures, including roofs, in Lisbon, Portugal: Antirrhinum linkianum, Asphodelus fistulosus, Centranthus ruber, and Sedum sediforme. We evaluated growth and aesthetic value under two irrigation treatments (100 and 60% ETo, reference evapotranspiration). The presence of moss covering for the lower level of irrigation was also evaluated.