ArticlePlant and soil2026
Alpine dwarf shrubs on green roofs: species-specific physiological responses to substrate depth and drought intensity.
Article in Plant and soil, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Background and aims: Green roofs can enhance urban biodiversity when local, functionally diverse species are used. However, extreme roof conditions require species selection based on plant eco-physiological characteristics. Methods: This study evaluated the performance of four Alpine dwarf shrubs ( Results: More favourable water availability and temperature with 30 cm substrate reduced drought stress and increased stomatal conductance, photosynthesis, and biomass in all shrubs compared to 10 cm substrate. However, species responded differently to substrate depth and drought intensity, with Conclusions: Alpine dwarf shrubs can broaden the species for temperate green roofs, but some may experience drought-induced dieback with shallow substrate. Alternating deep and shallow substrate patches may be a cost-efficient strategy to improve shrub survival and account for species-specific limitations. Supplementary Information: The online version contains supplementary material available at https://doi.org/10.1007/s11104-026-08836-6.
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