François Munoz

François Munoz
Université Grenoble Alpes · UFR Chimie-Biologie

PhD, HDR

About

234
Publications
85,419
Reads
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3,889
Citations
Introduction
I currently work at Université Grenoble Alpes. My research concerns Ecology, Biogeography and Evolutionary Biology. It mainly investigates the mechanisms underlying population and community dynamics at multiple spatial and temporal scales. Theoretical and methodological approaches are developped and applied to study tropical and temperate ecosystems (tropical forests in India and New Caledonia, grasslands and weed communities in Europe, high-elevation peatlands in Bolivia...).
Additional affiliations
September 2017 - present
Université Grenoble Alpes
Position
  • Professor (Full)
November 2014 - August 2017
French Institute of Pondicherry
Position
  • Head of Department
September 2007 - August 2017
Université de Montpellier
Position
  • Professor (Associate)
Education
January 2003 - May 2006
September 2001 - September 2002
French National Centre for Scientific Research
Field of study
  • Evolutionary Biology and Ecology
September 2000 - December 2002
AgroParisTech
Field of study

Publications

Publications (234)
Article
- 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...
Article
Full-text available
Although metacommunity ecology has been a major field of research in the last decades, with both conceptual and empirical outputs, the analysis of the temporal dynamics of metacommunities has only emerged recently and still consists mostly of repeated static analyses. Here, we propose a novel analytical framework to assess metacommunity processes u...
Article
Full-text available
Establishing laws of plant and ecosystems functioning has been an enduring objective of functional and evolutionary ecology. However, most theories neglect the role of human activities in creating novel ecosystems characterized by species assemblages and environmental factors not observed in natural systems. We argue that agricultural weeds, as an...
Article
Full-text available
Trait-based ecology aims to understand the processes that generate the overarching diversity of organismal traits and their influence on ecosystem functioning. Achieving this goal requires simplifying this complexity in synthetic axes defining a trait space and to cluster species based on their traits while identifying those with unique combination...
Article
Full-text available
Deciphering the effect of neutral and deterministic processes on community assembly is critical to understand and predict diversity patterns. The information held in community trait distributions is commonly assumed as a signature of these processes, but empirical and modelling attempts have most often failed to untangle their confounding, sometime...
Article
Biological invasions are one of the greatest threats to biodiversity and ecosystem functioning. However, the constraints imposed by the invaders on native organisms – e.g. increased competition for resources, perturbation of mutualistic interactions – and the associated response of these organisms, remain poorly understood. Native species can survi...
Article
Understanding the capacity of ecological systems to withstand and recover from disturbances is a major challenge for ecological research in the context of environmental changes. Past research has mostly focused on the local effects of disturbances on biodiversity recovery, while alterations of inter-patch connectivity induced by disturbances have r...
Conference Paper
Full-text available
La Côte d'Ivoire est au coeur d'enjeux agro-écologiques et socio-économiques considérables, ses filières étant rendues très vulnérables par le changement climatique. Les analyses présentées s'appuient sur les simulations climatiques CMIP6 (et sur certains indicateurs provenant des données CMIP5) à l'échelle du sud-est du pays, représentatif de gran...
Preprint
Full-text available
We develop a spatially realistic model of mutualistic metacommunities that exploits the joint structure of spatial and interaction networks. This model exhibits a sharp transition between a stable non-null equilibrium state and a global extinction state. This behaviour allows defining a threshold on colonisation/extinction parameters for the long-t...
Article
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Competition for limited resources can yield two contrasting outcomes in community structure, namely, either (i) dominance of most competitive species (with functional convergence of the traits conferring this ability), or (ii) niche partitioning of species using distinct resources. In addition, varying resource availability in different environment...
Article
Full-text available
Outside controlled experimental plots, the impact of community attributes on primary productivity has rarely been compared to that of individual species. Here, we identified plant species of high importance for productivity (key species) in >29,000 diverse grassland communities in the European Alps, and compared their effects with those of communit...
Article
Full-text available
Species Distribution Models (SDMs) are fundamental tools in ecology for predicting the geographic distribution of species based on environmental data. They are also very useful from an application point of view, whether for the implementation of conservation plans for threatened species or for monitoring invasive species. The generalizability and s...
Article
Full-text available
Species Distribution Models (SDMs) are widely used numerical tools that rely on correlations between geolocated presences (and possibly absences) and environmental predictors to model the ecological preferences of species. Recently, SDMs exploiting deep learning and remote sensing images have emerged and have demonstrated high predictive performanc...
Article
Aim: Indian and Malagasy tropical rainforests share a common history that dates back to the fragmentation of Gondwana. We partitioned phylogenetic diversity across historical periods to uncover how such continental displacement led to the divergence of lineages, through vicariance and/or independent migration from other regions, influencing extant...
Article
Full-text available
Characterizing plant functional diversity is essential to decipher community assembly rules and ecosystem functioning. Most studies focused on above-ground traits whereas the analysis of root diversity lags far behind. We analyzed the structure of fine root (< 2mm) diameter distribution at the community level as an indicator of root morphological d...
Preprint
Full-text available
Understanding the capacity of ecological systems to withstand and recover from disturbances is a major challenge for ecological research in the context of environmental change. Disturbances have multi-scale effects: they can cause species extinctions locally and alter connectivity between habitat patches at the metacommunity level. Yet, our underst...
Article
Full-text available
River networks are among Earth’s most threatened hot-spots of biodiversity and provide key ecosystem services (e.g., supply drinking water and food, climate regulation) essential to sustaining human well-being. Climate change and increased human water use are causing more rivers and streams to dry, with devastating impacts on biodiversity and ecosy...
Article
Full-text available
Despite evidence of a positive effect of functional diversity on ecosystem productivity, the importance of functionally distinct species (i.e., species that display an original combination of traits) is poorly understood. To investigate how distinct species affect ecosystem productivity, we used a forest gap model to simulate realistic temperate fo...
Chapter
The Western Ghats (WG) include a narrow belt of rainforests exposed to the southwest Indian monsoon. They shelter diverse forest types and rare endemic biodiversity, making the WG one of the 25 major biodiversity hotspots on Earth. The WG are also one of the most threatened biodiversity hotspots, as climate change and deforestation are expected to...
Preprint
Full-text available
In this paper, Alan R. Rogers (2021) examines the dynamics of foraging strategies for a resource that gains value over time (e.g., ripening fruits), while there is a fixed cost of attempting to forage the resource, and once the resource is harvested nothing is left for other harvesters. For this model, not any pure foraging strategy is evolutionary...
Chapter
This chapter explains ecological mechanisms leading to extinction debts, and addresses implications for historical ecology from both research and conservation perspectives. It discusses how, by shedding light on past ecological dynamics, historical ecology is pivotal to detect and understand the mechanisms causing extinction debts. Extinction debts...
Article
In the context of global change, tropical forests are increasingly affected by fires. Understanding the ecological processes driving forest recovery in fire-modified landscapes is a critical issue. We analyzed spatial and temporal (8 years) changes in functional and phylogenetic composition of tree communities during forest post-fire recovery in an...
Article
Full-text available
• Questions. Changes in the functional composition of tree communities along resource availability gradients have received attention, but it is unclear whether or not understory and canopy guilds respond similarly to different light, biomechanical, and hydraulic constraints. • Location. An anthropically-undisturbed, old-growth wet evergreen Diptero...
Article
Full-text available
Plant-pollinator interactions are key components of ecosystem functioning and are therefore increasingly studied. Of all the approaches used to estimate these interactions, the capture of pollinators along transects is a widely used and recognized method. However, specific choices of sampling design can strongly influence observations of insect vis...
Preprint
Full-text available
While the impact of biodiversity, notably functional diversity, on ecosystem productivity has been extensively studied, little is known about the effect of individual species. Here, we identified species of high importance for productivity (key species) in over 28,000 diverse grassland communities in the European Alps, and compared their effects wi...
Article
Full-text available
Past environmental changes have shaped the evolutionary and ecological diversity of extant organisms. Specifically, climatic fluctuations have made environmental conditions alternatively common or rare over time. Accordingly, most taxa have undergone restriction of their distribution to local refugia during habitat contraction, from which they coul...
Article
Questions: Studies in functional biogeography have mostly focused on unmanaged ecosystems, and neglected testing how management intensity affects community-level plant trait response to bioclimatic gradients. We hypothesize that trait-climate relationships for arable weeds spontaneously establishing in croplands, subject to intensive management, sh...
Article
Full-text available
Convolutional Neural Networks (CNNs) are statistical models suited for learning complex visual patterns. In the context of Species Distribution Models (SDM) and in line with predictions of landscape ecology and island biogeography, we expected that CNN can grasp how local landscape structure affects prediction of species occurrence in SDMs. The mod...
Chapter
Species distribution models (SDM) assess and predict how species spatial distributions depend on the environment, due to species ecological preferences. These models are used in many different scenarios such as conservation plans or monitoring of invasive species. The choice of a model and of environmental data have strong impact on the model’s abi...
Article
Full-text available
- Building reliable Species Distribution Models (SDMs) from presence-only information requires a good understanding of the spatial variation in the sampling effort. However, in most cases the sampling effort is unknown, leading to biases in SDMs. This study proposes a method to jointly estimate the parameters of sampling effort and species densitie...
Article
Full-text available
Functionally distinct species (i.e. species with unique trait combinations in the community) can support important ecological roles and contribute disproportionately to ecosystem functioning. Yet, how functionally distinct species have responded to recent climate change and human exploitation has been widely overlooked. Here, using ecological trait...
Article
Full-text available
Aim: The abundance-frequency relationship (AFR) is among the most-investigated pattern in biogeography, yet the relative contributions of niche-based processes related to ecological strategies, and of neutral processes related to spatial colonization-extinction dynamics, remains uncertain. Here, we tested the influences of ecological specialization...
Article
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Disturbances and successional dynamics shape the composition of tree communities, but data remain scarce for tropical forests of West Africa. We assessed the imprint of past disturbances on the composition of evergreen forests in an Ivorian National Park. We hypothesized that (i) Pioneer Indices (PI) based on the relative proportion of pioneer and...
Article
Full-text available
1. Successful monitoring and management of plant resources worldwide needs the involvement of civil society to support natural reserve managers. Because it is difficult to correctly and quickly identify plant species for non-specialists, the development of recent techniques based on automatic visual identification should facilitate and increase pub...
Data
A species-rich weed community in South France, photographed in May 2018. It shows some threatened weeds of Mediterrean origin, but also the high temporal variability of these communities: in 2018, the rainy winter and spring allowed very high density of weeds in cultivated fields and fallows of the area, while most of the time the weed populations...
Article
Full-text available
The definition of “arable weeds” remains contentious. Although much attention has been devoted to specialized, segetal weeds, many taxa found in arable fields also commonly occur in other habitats. The extent to which adjacent habitats are favourable to the weed flora and act as potential sources of colonisers in arable fields remains unclear. In a...
Article
Full-text available
We are currently facing a large decline in bee populations worldwide. Who are the winners and losers? Generalist bee species, notably those able to shift their diet to new or alternative floral resources, are expected to be among the least vulnerable to environmental change. However, studies of interactions between bees and plants over large tempor...
Article
Full-text available
The use of naturalist mobile applications has dramatically increased during last years, and provides huge amounts of accurately geolocated species presences records. Integrating this novel type of data in species distribution models (SDMs) raises specific methodological questions. Presence-only SDM methods require background points, which should be...
Article
Full-text available
Ce dimanche 8 septembre 2019, profitant d'une brève fenêtre météorologique, nous nous échappons quelques heures pour une excursion botanique dans le Grésivaudan. Notre objectif est l'observation de quelques raretés de fin de saison : Cyclamen purpurascens, Inula helvetica, Teucrium scordium, Aster amellus... Dans la matinée, nous aurons la chance e...
Article
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Aim: Ecological specialization is defined by the variety of environments species occupy. Identifying the mechanisms that influence specialization is critical to understand patterns of species coexistence and biodiversity. However, the functional attributes that result in specialization are still unknown. Similarly, there is contrasting evidence bet...
Article
Full-text available
Levionnois et al. (https://www.biorxiv.org/content/10.1101/351197v4) investigated intraspecific variation of functional traits and growth trajectories in a typical, early-successional tree species in French Guiana, Amazonia. This species, Cecropia obtusa, is generalist regarding soil type and can be found on both white sand and ferralitic soil. The...
Article
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The impact of rapid habitat loss and fragmentation on biodiversity is a major issue. However, we still lack an integrative understanding of how these changes influence biodiversity dynamics over time. In this study, we investigate the effects of these changes in terms of both niche-based and neutral dynamics. We hypothesize that habitat loss has de...
Article
Full-text available
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...
Article
Full-text available
Plant traits—the morphological, anatomical, physiological, biochemical and phenological characteristics of plants—determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits and detriments to people. Plant trait data thus represent the basis for a vast area of research sp...
Article
Full-text available
Invasion ecology has a long tradition of searching for traits distinguishing alien invasive and non-invasive plants. Surprisingly, this approach has been so far poorly used to understand why some arable weeds are abundant and widespread while others are rare and narrowly distributed. In the present study, we focus on the characteristics of successf...
Preprint
Full-text available
Invasion ecology has a long tradition of searching for traits distinguishing alien invasive and non-invasive plants. Surprisingly, this approach has been so far poorly used to understand why some arable weeds are abundant and widespread while others are rare and narrowly distributed. In the present study, we focused on the characteristics of succes...
Article
Several studies have proposed to predict Species Richness (SR) by combining the predictions of independent Species Distributions Models (SDMs) (the predict first-assemble later strategy). Alternative methods propose to combine outputs from SDMs differently, by either summing predicted presence probabilities at each location, or summing binary prese...
Chapter
Full-text available
Amborella trichopoda (Amborellaceae) is a shrub endemic to New Caledonia in the Southwest Pacific region. This plant suddenly became famous when molecular phylogenetic studies revealed that this sole species is likely the sister taxon to all other angiosperms. It has thus been a prime research model for reconstructing plant evolution and gaining in...
Article
Aims: To understand how variations in precipitation and topographic wetness influence tree community assembly at both regional and landscape scales in tropical forests. Location: New Caledonia (SW Pacific) Methods: We sampled 40 tree communities in 0.04-ha plots laid along topographic gradients within two landscapes with contrasting rainfall regim...
Article
Full-text available
Aim - Dietary strategies are key to understanding species’ resource use, relationships with environment and biotic interactions. We aimed to identify the major strategies that shape birds’ diet space, and to investigate their spatial distributions in association with biogeographic, bioclimatic and anthropogenic drivers. Location - Global. Time pe...
Article
Full-text available
Aim – Understanding the drivers of community diversity and composition is a major question in ecology, which is of particular significance for the conservation of narrowly distributed taxa facing habitat alteration. In this study, we examined three ecological processes (environmental and biotic filtering, and dispersal limitation) hypothesized to d...
Article
• Key message Deterministic processes drive tree functional and phylogenetic temporal change in temperate forest across succession and depending on tree size classes. The dominant influential factors underlying temporal change changed from abiotic (especially for topographic factors) to biotic (e.g. basal area) with both increasing successional sta...
Article
Understanding the imprint of environmental filtering on community assembly along environmental gradients is a key objective of trait-gradient analyses. Depending on local constraints, this filtering generally entails that species departing from an optimum trait value have lower abundances in the community. The Community-Weighted Mean (CWM) and Vari...
Preprint
Full-text available
Understanding the imprint of environmental filtering on community assembly along environmental gradients is a key objective of trait-gradient analyses. Depending on local constraints, this filtering generally entails that species departing from an optimum trait value have lower abundances in the community. The Community-Weighted Mean (CWM) and Vari...
Article
Amborella trichopoda (Amborellaceae) is a shrub endemic to New Caledonia in the Southwest Pacific region. This plant suddenly became famous when molecular phylogenetic studies revealed that this sole species is likely the sister taxon to all other angiosperms. It has thus been a prime research model for reconstructing plant evolution and gaining in...