Date: April 6, 2018
Source: University of Portsmouth
New research suggests that species that live on green roofs arrived by hitching lifts on birds or by riding air currents.
While green roofs are seen as being great for biodiversity, adding habitat to what would otherwise be a bare roof, they can be harsh environments with high winds and extremes of temperature that make them vulnerable to drought. Because they are high, they can also be inaccessible to species that can't fly, in particular soil organisms which are crucial for nutrient cycling and sustainable plant growth.
Yet previous research shows that these species do live on roofs. So how do they get there?