Croeser and colleagues shift urban greening from quantity to strategic position. Modelling the conversion of parking spaces into small green spaces across Melbourne, they compare scenarios that maximise the number of interventions with scenarios targeted toward ecological connectivity. The crucial finding is that spatially targeted retrofits produce substantially greater connectivity benefits per unit of effort. The methodological operation is therefore topological rather than merely volumetric: the value of an intervention depends on where it enters an existing ecological network and which barriers it helps species traverse. This has major implications for urban design because it overturns the intuitive equation more green = better ecological outcome. Knowledge of movement, fragmentation and network structure becomes a design instrument. The paper bridges conservation planning and urban morphology, showing that small spatial decisions can have landscape-scale effects when placed according to ecological relations rather than generic greening targets.
