Extended Data Fig. 3: Interaction breadth of species that have established as introduced species versus species that do not appear as introduced species.
From: Accelerating homogenization of the global plant–frugivore meta-network
For focal plant and animal species, the normalized degree—number of observed partners divided by the number of potential partners—was greater for species that appear as introduced than for species that do not. In a, b, introduced species are those that have been reported as introduced anywhere according to publicly available databases (χ2a = 59.7, d.f. = 1, Pa = 1.1 × 10−14, χ2p = 14.5, d.f. = 1, Pp = 1.4 × 10−4). In c, d, introduced species are those that are recorded in our database within a local network where they are introduced (χ2a = 235.3, d.f. = 1, Pa < 2.2 × 10−16, χ2p = 40.4, d.f. = 1, Pp = 2.1 × 10−10).
