Ecological design principles for constrained green infrastructure

Biodiversité et politiques
jeudi 19 déc. 10:55 AM (15 minutes)
Salle EFG
Urban planners are designing future cities with new levels of integration between land-use, travel network infrastructure, and green infrastructure. However, standard ecological models currently only inform the land-use part of that design process and so species that must forage, move, or disperse throughout the city along a green network are left unaccounted for in most network infrastructure plans. Because of this historical isolation between the grey and green aspects of urban design, they have been modeled, planned and implemented separately, and without much consideration for their interactions. As future cites look for green spaces that are more than just landscaping, we believe that biodiversity science can provide helpful design principles for engineering functional ecosystems in the constrained built spaces of cities. We describe the different ways that cities and ecosystems fill and use space, isolate the mechanisms responsible for those emergent patterns (e.g. dispersal, density dependence, and population synchrony), and then use those mechanisms as design principles for engineering green infrastructure in dense urban cites. We do this by examining the meso-scale rules that emerge in human cities dominated by their dependence on transport networks (dendritic fractals) and then envision ways of applying those rules to design ecological systems constrained to closed networks of green infrastructure (e.g. green corridor configuration by speed limits rather than distances). Our goal is to facilitate a future where ecologically robust green infrastructure can establish healthy levels of trophic hierarchy and population stability at a mixture of biological scales while in a constrained urban environment.

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