Finding species neutral modules with co-occurence data: principles and application to plant communities
2024
Laroche, Fabien | Dynamiques et écologie des paysages agriforestiers (DYNAFOR) ; École nationale supérieure agronomique de Toulouse (ENSAT, INP-ENSAT, AgroToulouse, INP-AgroToulouse) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Ecole d'Ingénieurs de Purpan (INP - PURPAN) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Société Française d'Ecologie et d'Evolution | ANR-19-CE32-0002,BloBiForM,Approches neutres par blocs pour prédire l'effet de la gestion forestière sur la biodiversité au sein des dendromicrohabitats(2019)
International audience
显示更多 [+] 显示较少 [-]英语. The neutral theory of community ecology provides a null hypothesis to study species co-occurence patterns. Here, we derived a robust statistical property of neutral co-occurrnces: the presence probabilities of two neutral species should be ordered similarly in every site. Connecting species pairs that do not significantly violate this property yields a species network of `rank consistency'. We proposed that the presence of modules in this network violates the neutral assumption, and further indicates subgroups of species that do not co-occur neutrally with one another. We suggested interpreting these species `neutral' modules by relating their composition to species traits and relating their spatial distribution to environmental conditions. We applied our apporach to a published example on tropical tree communities and retrieved previously established results about environmental filtering on leaf-shedding phenology along a rainfall gradient. We call for further developping robust tests based on the neutral theory.
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