Impact of cyber-invasive species on a large ecological network

Doizy Anna, Barter Edmund, Memmott Jane, Varnham Karen, Gross Thilo. 2018. Impact of cyber-invasive species on a large ecological network. Scientific Reports, 8 (1):13245, 7 p.

Quartile : Q1, Sujet : MULTIDISCIPLINARY SCIENCES

Résumé : As impacts of introduced species cascade through trophic levels, they can cause indirect and counter-intuitive effects. To investigate the impact of invasive species at the network scale, we use a generalized food web model, capable of propagating changes through networks with a series of ecologically realistic criteria. Using data from a small British offshore island, we quantify the impacts of four virtual invasive species (an insectivore, a herbivore, a carnivore and an omnivore whose diet is based on a rat) and explore which clusters of species react in similar ways. We find that the predictions for the impacts of invasive species are ecologically plausible, even in large networks. Species in the same taxonomic group are similarly impacted by a virtual invasive species. However, interesting differences within a given taxonomic group can occur. The results suggest that some native species may be at risk from a wider range of invasives than previously believed. The implications of these results for ecologists and land managers are discussed.

Mots-clés géographiques Agrovoc : Royaume-Uni de Grande-Bretagne et d'Irlande du Nord

Mots-clés libres : Invasive species, Food web, Introduced species, Generalized model, Large ecological network, Impact

Classification Agris : L20 - Écologie animale
L51 - Physiologie animale - Nutrition
U10 - Informatique, mathématiques et statistiques

Champ stratégique Cirad : Axe 6 (2014-2018) - Sociétés, natures et territoires

Auteurs et affiliations

• Doizy Anna, CIRAD-BIOS-UMR PVBMT (REU) ORCID: 0000-0002-2866-6918 - auteur correspondant
• Barter Edmund, Queen's Building (GBR)
• Memmott Jane, School of Biological Sciences (GBR)
• Varnham Karen, RSPB (GBR)
• Gross Thilo, Merchant Venturers Building (GBR)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/589129/)

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