Advancing biological invasion hypothesis testing using functional diversity indices

David Renault; Manon C.M. Hess; Julie Braschi; Ross N Cuthbert; Marta Gaia Sperandii; Manuele Bazzichetto; Olivier Chabrerie; Gabrielle Thiébaut; Elise Buisson; Frédéric Grandjean; Anne‐kristel Bittebière; M.A. Mouchet; François Massol

doi:10.1016/j.scitotenv.2022.155102

Journal articles

Advancing biological invasion hypothesis testing using functional diversity indices

David Renault ^{1, 2, *} Manon C.M. Hess ^{3, 4, 5} Julie Braschi ^{3, 6} Ross N Cuthbert ^{7, 8} Marta Gaia Sperandii ⁹ Manuele Bazzichetto ¹ Olivier Chabrerie ¹⁰ Gabrielle Thiébaut ¹ Elise Buisson ³ Frédéric Grandjean ¹¹ Anne‐kristel Bittebière ¹² M.A. Mouchet ¹³ François Massol ¹⁴

* Corresponding author

1 ECOBIO - Ecosystèmes, biodiversité, évolution [Rennes]

2 Institut Universitaire de France, 1 rue Descartes, 75231 Paris Cedex 05, France

3 IMBE - Institut méditerranéen de biodiversité et d'écologie marine et continentale

4 Institut de recherche pour la conservation des zones humides méditerranéennes Tour du Valat, Le Sambuc, 13200 Arles, France

5 NGE-GUINTOLI

6 Naturalia-Environnement, Ingénierie en écologie, 20 Rue Lawrence Durrell, 84140 Avignon, France

7 GEOMAR - Helmholtz Centre for Ocean Research [Kiel]

8 School of Biological Sciences Queen’s University Belfast

9 Dipartimento di Scienze, Università degli Studi Roma Tre, Viale G. Marconi 446, 00146 Roma, Italy

10 EDYSAN - Ecologie et Dynamique des Systèmes Anthropisés - UMR CNRS 7058

11 EBI - Ecologie et biologie des interactions

12 BAH - Équipe 1 - Biodiversité et Adaptation dans les Hydrosystèmes

LEHNA - Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés

13 CESCO - Centre d'Ecologie et des Sciences de la COnservation

14 CIIL - Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204

Abstract : Pioneering investigations on the effects of introduced populations on community structure, ecosystem functioning and services have focused on the effects of invaders on taxonomic diversity. However, taxonomic-based diversity metrics overlook the heterogeneity of species roles within and among communities. As the homogenizing effects of biological invasions on community and ecosystem processes can be subtle, they may require the use of functional diversity indices to be properly evidenced. Starting from the listing of the main used functional diversity indices, alongside with the presentation of their strengths and limitations, we further focus on studies pertaining to the effects of invasive species on native communities and recipient ecosystems obtained using functional diversity indices. By doing so, we reveal that functional diversity of the recipient community may strongly vary at the onset of the invasion process, while it stabilizes at intermediate and high levels of invasion. As functional changes occurring during the lag phase of an invasion have been poorly investigated, we show that it is still unknown if there are consistent changes in functional diversity metrics that could indicate the end of the lag phase. Thus, we highly recommend to provide information on the invasion stage under consideration when computing functional diversity metrics. For the existing literature, it is also surprising that very few studies explored the functional difference between organisms from the recipient communities and invaders of the same trophic levels, or assessed the effects of non-native organism establishment into a non-analogue versus an analogue community. By providing valuable tools for obtaining in-depth diagnostics of community structure and functioning, functional diversity indices valuable tools for on-time implementation of restoration plans and improved conservation strategies. To conclude, our work provides a first synthetic guide for their use in hypothesis testing in invasion biology

Keywords : Functional traits Invasiveness Invasibility Community-weighted trait mean Diversity indices Alien invasive species

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Journal articles

Domain :

Environmental Sciences

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Advancing biological invasion hypothesis testing using functional diversity indices

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