Fig. 3: Intercontinental species flow of non-native insects.
From: Temporal dynamics and global flows of insect invasions in an era of globalization
a, Global species flow from donor to recipient biogeographical regions. b, Spatial network of species exchange pathways. Countries or regions are shown as nodes (shapes correspond to different continents), with their labels corresponding to the ISO 3166-1 alpha-3 codes. Intercontinental species exchanges are asymmetrical, and well-connected trade and transport hub regions have a central role in the networks of global insect spread (the pinker the colour, the more central a node is in the network (the more species it shares with other countries)). Data for panel a are from ref. 2. Panel b reprinted from ref. 85, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
