How do invasive species travel to and through urban environments?

Padayachee Ashlyn L., Irlich Ulrike M., Faulkner Katelyn T., Gaertner Mirijam, Proches Serban, Wilson John R. U., Rouget Mathieu. 2017. How do invasive species travel to and through urban environments?. Biological Invasions, 19 (12) : pp. 3557-3570.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q1, Sujet : BIODIVERSITY CONSERVATION / Quartile : Q2, Sujet : ECOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Psychologie-éthologie-ergonomie

Abstract : Globalisation has resulted in the movement of organisms outside their natural range, often with negative ecological and economic consequences. As cities are hubs of anthropogenic activities, with both highly transformed and disturbed environments, these areas are often the first point of entry for alien species. We compiled a global database of cities with more than one million inhabitants that data had on alien species occurrence. We then identified the most prominent pathways of introduction and vectors of spread of alien species in these cities. Most species were intentionally introduced to cities and were released or escaped from confinement. The majority of alien species then spread within cities through natural means (primarily unaided dispersal). Pathway prominence varied across the taxonomic groups of alien species: the most prominent pathway for plants and vertebrates was the escape pathway; for invertebrates the stowaway and contaminant pathways were most likely to facilitate introductions. For some organisms, pathway prominence varied with the geographical and climatic characteristics of the city. The characteristics of the cities also influenced the prominence of vectors of spread for alien species. Preventing the natural spread of alien species within cities, and into adjacent natural environments will be, at best, difficult. To prevent invasions, both the intentional and unintentional introduction of potentially harmful alien species to cities must be prevented. The pathways of introduction and vectors of spread identified here should be prioritised for management. (Résumé d'auteur)

Mots-clés Agrovoc : Espèce envahissante, Zone urbaine, Ville, Surveillance épidémiologique, Banque de données, Dynamique des populations, Distribution spatiale, Introduction d'animaux, Espèce introduite, Vecteur de maladie, Écologie animale, habitat, Mouvement

Mots-clés géographiques Agrovoc : Monde

Mots-clés libres : Biological invasion, Pathways of introduction, Prioritisation, Urban invasions, Vectors of spread

Classification Agris : L72 - Pests of animals
L20 - Animal ecology

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Padayachee Ashlyn L., University of KwaZulu-Natal (ZAF)
  • Irlich Ulrike M., University of Pretoria (ZAF)
  • Faulkner Katelyn T., Kirstenbosch Research Centre (ZAF)
  • Gaertner Mirijam, Stellenbosch University (ZAF)
  • Proches Serban, University of KwaZulu-Natal (ZAF)
  • Wilson John R. U., Kirstenbosch Research Centre (ZAF)
  • Rouget Mathieu, CIRAD-BIOS-UMR PVBMT (REU)

Source : Cirad-Agritrop (

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