WHAT THE EVIDENCE SAYS
Sampling 219 plots across 87 nodes in a 298-km² ecological network, researchers counted 443 plant species, 47 alien. Peripheral, less-connected nodes supported high native richness and uniqueness; alien richness depended strongly on land-cover composition and edges, especially within fragmented woods.
WHY IT MATTERS / OUR READ
A green corridor is not automatically a complete conservation gain. Plans should evaluate native and introduced communities, landscape edges and patch position, rather than relying only on structural connectivity scores.
CAVEATS / UNCERTAINTY
Correlational landscape study, not an experiment in adding or removing corridors. Patterns are habitat-dependent and alien-community similarity does not alone prove entire floras homogenized.
SOURCE
Liccari et al. · Landscape Ecology · Italian ecological-network study
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