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Title (Primary) Biodiversity impact of green roofs and constructed wetlands as progressive eco‐technologies in urban areas
Author Knapp, S.; Schmauck, S.; Zehnsdorf, A.
Journal Sustainability
Year 2019
Department BZF; UBZ
Volume 11
Issue 20
Page From art. 5846
Language englisch
Keywords biological diversity; climate adaptation; ecosystem services; green roofs; multifunctionality; resilience; stormwater management; urban development; urban green infrastructure; urban nature conservation
Abstract The total amount of sealed surfaces is increasing in many urban areas, which presents a challenge for sewerage systems and wastewater treatment plants when extreme rainfall events occur. One promising solution approach is the application of decentralized eco-technologies for water management such as green roofs and constructed wetlands, which also have the potential to improve urban biodiversity. We review the effects of these two eco-technologies on species richness, abundance and other facets of biodiversity (e.g., functional diversity). We find that while green roofs support fewer species than ground-level habitats and thus are not a substitute for the latter, the increase in green roof structural diversity supports species richness. Species abundance benefits from improved roof conditions (e.g., increased substrate depth). Few studies have investigated the functional diversity of green roofs so far, but the typical traits of green roof species have been identified. The biodiversity of animals in constructed wetlands can be improved by applying animal-aided design rather than by solely considering engineering requirements. For example, flat and barrier-free shore areas, diverse vegetation, and heterogeneous surroundings increase the attractiveness of constructed wetlands for a range of animals. We suggest that by combining and making increasing use of these two eco-technologies in urban areas, biodiversity will benefit.
Persistent UFZ Identifier
Knapp, S., Schmauck, S., Zehnsdorf, A. (2019):
Biodiversity impact of green roofs and constructed wetlands as progressive eco‐technologies in urban areas
Sustainability 11 (20), art. 5846