A conceptualisation of an invasion positive feedback loop driven by intentional introductions of non-native species for the horticulture or pet trades. The example species used are, from the top left of the centre photograph and moving clockwise, Lantana (Lantana camara), the red-footed tortoise (Chelonoidis carbonarius), coral vine (Antigonon leptopus) and the red-tailed boa (Boa constrictor). Each species has a history of intentional introduction and successful establishment in recipient regions. Drawings with different colours are based on actual colour varieties or morphs of these species. The plant photographs were provided by James Sinclair (the first author), the animal photographs were provided by Keara Clancy (Department of Wildlife Ecology and Conservation at the University of Florida) and the drawings were commissioned from Marie-Josée Létourneau for use in this manuscript.

  Part of: Sinclair JS, Brown JA, Lockwood JL (2020) Reciprocal human-natural system feedback loops within the invasion process. In: Wilson JR, Bacher S, Daehler CC, Groom QJ, Kumschick S, Lockwood JL, Robinson TB, Zengeya TA, Richardson DM. NeoBiota 62: 489-508. https://doi.org/10.3897/neobiota.62.52664