Adrien Taudiere

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Community ecologists are active in describing species by their functional traits, quantifying the functional structure of plant and animal assemblages and inferring community assembly processes with null‐model analyses of trait distribution and functional diversity indices. Intraspecific variation in traits and effects of spatial scale are potentia...

Pest management using attractive and/or repellent semiochemicals is a key alternative to synthetic insecticides. Its implementation requires a good understanding of the intra- and interspecific chemical interactions of arthropod pests, their interactions with their abiotic environment, as well as their evolutionary dynamics. Although mites include...

Describing communities of living organisms increasingly relies on massive DNA sequencingfrom environmental samples (e-DNA). The analysis of these large amounts of sequences is wellestablished in the R ecosystem, especially for metabarcoding, i.e. the massive sequencing ofone or several given DNA regions, called markers. The MiscMetabar package aims...

Background and aims High-input agriculture involves low within-field crop genetic diversity, while plant diversity in natural ecosystems was shown to promote ecosystem functioning. Increasing intra-specific diversity in agroecosystems is a promising strategy to stabilize crop productivity and promote the associated diversity of soil biota. We inves...

The restoration of urban sealed soils is a major stake for urban planners. In particular, characterizing their resilience from a biotic perspective is of primary importance for remobilizing these artificialized substrates in urban green spaces. Using Marseille (France) as a case study, we implemented a metabarcoding next generation sequencing appro...

Management of Dermanyssus gallinae, a cosmopolitan hematophagous mite responsible for damage in layerpoultry farming, is hampered by a lack of knowledge of its spatio-temporal population dynamics. Previousstudies have shown that the circulation of this pest between farms is of strictly anthropogenic origin, that amitochondrial haplogroup has been e...

This website summarizes our knowledge of the biology of the poultry red mite (Dermanyssus gallinae s.s.) in relation to the difficulties of managing this parasite on layer farms. It is written in French, and has been designed to help French-speaking people confronted with the problem to understand it better. It is divided into four sections: (1)...

Three decades ago, worldwide biodiversity hotspots were founded on the distributions of continental plants and vertebrates. Here, we question the timeliness of refining the geography of hotspots by basing their definition on more taxa, thanks to the molecular data available for hyper-diverse organisms such as insects, fungi and marine biota. To do...

High-input agriculture has been associated with a drastic reduction of within-field crop genetic diversity, while plant (mostly functional) diversity in natural ecosystems has been shown to promote ecosystem functioning. Increasing intra-specific diversity in agroecosystems is a promising strategy to stabilize crop productivity and promote the asso...

Many blood-feeding arthropods use volatile organic compounds (VOCs) to detect their vertebrate hosts. The role of chemical interactions in mediating the behavior of hematophagous insects and ticks has been investigated before but remains poorly understood in hematophagous mesostigmatic mites. The poultry red mite Dermanyssus gallinae is an obligato...

• Pest regulation by natural enemies has a strong potential to reduce the use of synthetic pesticides in agroecosystems. However, the effective role of predation as an ecosystem service remains largely speculative, especially with minute organisms such as mites. • Predatory mites are natural enemies for ectoparasites in livestock farms. We tested f...

Background & Aims Better understanding of belowground interactions in agroforestry systems is crucial for the success of plant co-existence. Beyond root competition, associated arbuscular mycorrhizal (AM) fungi can also be involved in plant to plant interactions. Thus far, the contribution of each agroforestry component (trees, herbaceous vegetatio...

A central question of community ecology is to understand how the interplay between processes of the Neutral Theory (e.g., immigration and ecological drift) and niche‐based processes (e.g., environmental filtering, intra‐ and interspecific density dependence) shape species diversity in competitive communities. The articulation between these two cate...

Plant leaves host species rich communities of foliar endophytic fungi (FEF). Compared to the other compartments of the plant microbiome, FEF diversity is poorly known. Here we document the communities of FEF associated with the endemic Corsican pine Pinus nigra subsp. laricio at three sites across its natural range and examine the effect of forest...

Nomenclatural type definitions are one of the most important concepts in biological nomenclature. Being physical objects that can be re-studied by other researchers, types permanently link taxonomy (an artificial agreement to classify biological diversity) with nomenclature (an artificial agreement to name biological diversity). Two proposals to am...

- We introduce the R package ecolottery dedicated to quick and efficient simulation of communities undergoing local neutral dynamics with environmentally filtered immigration from a reference species pool (spatially-implicit model). The package includes an Approximate Bayesian Computation (ABC) tool to estimate the parameters of these processes. We...

L’étude de l’écologie des micro-organismes est récente malgré son importance pratique et théorique intrinsèque, mais également son rôle central dans la niche des macro-organismes. Les interactions plantes-champignons, de par leur importance socio-écologique et leur diversité — du mutualisme au parasitisme en passant par le commensalisme —, offrent...

Presentation at the 9th International Conference on Mycorrhiza (ICOM) in Prague (session ”Advances in conservation through a better understanding of mycorrhizal ecology”)

The ecolottery package allows quick and efficient simulation of communities with combination of environmental filtering and neutral birth-death dynamics. We also provide an Approximate Bayesian Computation tool to assess parameters of these processes from observed communities. We propose a coalescent-based approach that presents significant advanta...

Documenting succession in forest canopy gaps provides insights into the ecological processes governing the temporal dynamics of species within communities. We analyzed the fruiting patterns of a rare but widely distributed saproxylic macromycete, Xylobolus subpileatus, during the ageing of natural canopy gaps in oak forests. In one of the last rema...

Studies of the ecology of micro-organisms began only recently despite their intrinsic importance - both practical and theoretical - and their central role in forming the niche habitats of macro-organisms. Plant-fungi interactions offer a relevant model for studies of the ecology of micro-organisms interacting with macro-organisms because of their c...

PhD defence presentation

RÉSUMÉ : L’étude de l’écologie des micro-organismes est récente malgré son importance pratique et théorique intrinsèque mais également son rôle central dans la niche des macro-organismes. Les interactions plantes-champignons, de par leur importance socio-écologique et de leur diversité – du mutualisme au parasitisme en passant par le commensalisme...

L'étude de l'écologie des micro-organismes est récente malgré son importance pratique et théorique intrinsèque mais également son rôle central dans la niche des macro-organismes. Les interactions plantes-champignons, de par leur importance socio-écologique et de leur diversité -- du mutualisme au parasitisme en passant par le commensalisme --, offr...

1. Characterizing the ecological processes driving the assembly and functional composition of ectomycorrhizal (ECM) fungal communities is an area of active research. 2. Here, we applied a trait-based framework to address whether and how environmental filtering and niche differentiation influence the diversity of ECM fungal enzymatic activities in...

Ectomycorrhizal networks may facilitate the establishment and survival of seedlings regenerating under the canopies of tropical forests and are often invoked as a potential contributor to monodominance. We identified ectomycorrhizal fungi in a monodominant Gilbertiodendron dewevrei (Fabaceae) rain forest in Cameroon, using sporocarps and ectomycorr...

Question What are the impacts of a century of plant diversity loss on wild bee diversity and ecological strategies? Network analysis approach To investigate species composition, their interactions and dynamics over time To relate network patterns to ecological processes Historical database Plant species visited at sampling time for ~ 50,000 identif...

Recent studies have shown that accounting for intraspecific trait variation (ITV) may better address major questions in community ecology. However, a general picture of the relative extent of ITV compared to interspecific trait variation in plant communities is still missing. Here, we conducted a meta-analysis of the relative extent of ITV within a...

The ectomycorrhizal (ECM) symbiosis connects mutualistic plants and fungal species into bipartite networks. While links between one focal ECM plant and its fungal symbionts have been widely documented, systemic views of ECM networks are lacking, in particular, concerning the ability of fungal species to mediate indirect ecological interactions betw...

Recent studies have shown that accounting for intraspecific trait variation (ITV) may better address major questions in community ecology. However, a general picture of the relative extent of ITV compared to interspecific trait variation in plant communities is still missing. Here, we conducted a meta-analysis of the relative extent of ITV within a...

Une fiche R en français

In the Mediterranean region, patches of vegetation recovering from disturbance and transiently dominated by shrubs produce one of the world's most prized fungi, the black truffle (Tuber melanosporum). In these successional plant communities, we have fragmentary knowledge of the distribution of T. melanosporum in space among ectomycorrhizal (ECM) ho...

Connaitre la biodiversité d’un campus universitaire peut paraître bizarre voire inutile. Cependant, la vie est partout et dans n’importe quel milieu, même au sein d’une ville comme Montpellier. L’inventaire de la biodiversité de la Faculté de Sciences et Techniques est un projet innovant qui s’inscrit dans une politique de développement durable. Il...

L'incorporation des traits fonctionnels en écologie des communautés a récemment permis de nombreuses avancées dans la compréhension des règles d'assemblage des communautés. Cependant, les variations intra-spécifiques des traits tardent à être prises en compte, malgré leur importance théorique dans la théorie de la niche (coexistence des espèces par...

Ce travail étudie le réseau d'interactions ectomycorhiziens (ECM) formé par 16 taxons de plantes et 234 taxons fongiques à l'échelle régionale (Corse), sur un large gradient altitudi- nal. L'analyse globale du réseau a montré l'absence d'imbrication et une forte modularité façonnée par la phylogénie. L'analyse locale (i.e au niveau des noeuds) a ut...

L'étude des réseaux mutualistes et trophiques est récente à apporte de nouvelles informations pour la compréhension des processus écologiques et évolutifs que sous tendent les interactions entre organismes. C'est dans ce processus de recherche que s'inscrit ce travail sur les réseaux trophiques formées par les plantes et les champignons de trois ty...