A5013346743- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Evolution and Genetic Dynamics
- Insect-Plant Interactions and Control
- Evolutionary Game Theory and Cooperation
- Insect and Arachnid Ecology and Behavior
- Animal Behavior and Reproduction
- Wildlife Ecology and Conservation
- Nematode management and characterization studies
- Animal Ecology and Behavior Studies
- Agronomic Practices and Intercropping Systems
- Species Distribution and Climate Change
- Legume Nitrogen Fixing Symbiosis
- Mathematical and Theoretical Epidemiology and Ecology Models
- Data Analysis with R
- Isotope Analysis in Ecology
- Genetic diversity and population structure
- Plant Parasitism and Resistance
- Insect and Pesticide Research
- Insect behavior and control techniques
- scientometrics and bibliometrics research
- Botany and Plant Ecology Studies
- Hemiptera Insect Studies
- Insect Pheromone Research and Control
- Insect Pest Control Strategies
Institut Sophia Agrobiotech
2016-2025
Université Côte d'Azur
2016-2025
Centre National de la Recherche Scientifique
2011-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2017-2024
Observatoire de la Côte d’Azur
2019-2021
Fondation Sophia Antipolis
2018
Institut National de la Recherche Agronomique
2007-2015
McGill University
2008-2012
Université de Montpellier
2006-2011
Institut des Sciences de l'Evolution de Montpellier
2006-2011
We introduce <b>glmulti</b>, an <b>R</b> package for automated model selection and multi-model inference with <code>glm</code> related functions. From a list of explanatory variables, the provided function <code>glmulti</code> builds all possible unique models involving these variables and, optionally, their pairwise interactions. Restrictions can be specified candidate models, by excluding specific terms, enforcing marginality, or controlling complexity. Models are fitted standard functions...
Abstract The competition–colonization trade‐off model is often used to explain the coexistence of species. Yet its applicability has been severely criticized, mainly because original assumed a strict competitive hierarchy species and did not allow for any preemptive effect. We considered impact relaxing both these limitations on coexistence. Relaxing intensity makes less likely introduces minimum colonization rate below which impossible. Allowing preemption limit dissimilarity between...
Abstract Diversity is a fundamental, yet threatened, property of ecological systems. The idea that diversity can itself favour diversification, in an autocatalytic process, very appealing but remains controversial. Here, we study generalized model communities and investigate how the level initial influences possibility evolutionary diversification. We show even simple models intra- inter-specific interactions predict positive effect on diversification: adaptive radiations may require...
The study of science-making is a growing discipline that builds largely on online publication and citation databases, while prepublication processes remain hidden. Here, we report results from large-scale survey the submission process, covering 923 scientific journals biological sciences in years 2006 to 2008. Manuscript flows among revealed modular network, with high-impact preferentially attracting submissions. However, about 75% published articles were submitted first journal would...
Keystone species are defined as having disproportionate importance in their community. This concept has proved useful and is now often used conservation ecology. Here, we introduce the of keystone communities (and ecosystems) within metacommunities metaecosystems). We define burden with impacts disproportionately large (positive or negative respectively) relative to weight metacommunity. show how a simple metric, based on effects single-community removals, can characterise along...
As human influence reshapes communities worldwide, many species expand or shift their ranges as a result, with extensive consequences across levels of biological organization. Range expansions can be ranked on continuum going from pulled dynamics, in which low-density edge populations provide the “fuel” for advance, to pushed dynamics high-density rear “push” expansion forward. While theory suggests that evolution during range could lead become time, empirical comparisons phenotypic...
Variation in traits affecting preference for, and performance on, new habitats is a key factor the initiation of ecological specialisation adaptive speciation. However, habitat resource use also involves other whose influence on genetic divergence remains poorly understood. In present study, we investigated extent variation life-history among sympatric populations pea aphid Acyrthosiphon pisum, which shows several host races that are specialised various plants family Fabaceae an established...
Classical ecological theory has proposed several determinants of food chain length, but the role metacommunity dynamics not yet been fully considered. By modelling patchy predator–prey metacommunities with extinction–colonization dynamics, we identify two distinct constraints on length. First, finite colonization rates limit predator occupancy to a subset prey-occupied sites. Second, intrinsic extinction accumulate along trophic chains. We show how both processes concur decrease maximal and...
Dispersal has long been recognized as a mechanism that shapes many observed ecological and evolutionary processes. Thus, understanding the factors promote its evolution remains major goal in ecology. Landscape connectivity may mediate trade-off between forces favour of dispersal propensity (e.g. kin-competition, local extinction probability) those against it energetic or survival costs dispersal). It remains, however, an open question how differing degrees landscape select for different...
Abstract Evidence is growing that evolutionary dynamics can impact biodiversity–ecosystem functioning (BEF) relationships. However the nature of such impacts remains poorly understood. Here we use a modelling approach to compare random communities, with no trait fine‐tuning, and co‐adapted where traits have co‐evolved, in terms emerging biodiversity–productivity, biodiversity–stability biodiversity–invasion Community adaptation impacted most BEF relationships, sometimes inverting slope...
Range expansions are key processes shaping the distribution of species; their ecological and evolutionary dynamics have become especially relevant today, as human influence reshapes ecosystems worldwide. Many attempts to explain predict range assume, explicitly or implicitly, so‐called ‘pulled' expansion dynamics, in which low‐density edge populations provide most ‘fuel' for species advance. Some expansions, however, exhibit very different with high‐density behind front ‘pushing' forward....
Abstract The European corn borer (ECB), Ostrinia nubilalis , is a major pest of maize crops. In Europe, two sympatric host races are found: one feeds on ( Zea mays ) and the other mainly mugwort Artemisia vulgaris ). genetically differentiated, seldom crossing in laboratory or field, females preferentially lay eggs their native species. We conducted independent experiments, field greenhouse conditions, to determine whether locally adapted effect larval density performance hybrids were also...
Abstract Foragers exploiting heterogeneous habitats make strategic movement decisions to maximize fitness. Charnov’s Marginal Value Theorem (MVT) models the sequential visit of habitat patches and their distribution predict optimal time allocation strategy. However, it notoriously ignores effects predation risk. Brown’s giving-up density (GUD) theory is an alternative that includes more abstract does not have specificity or graphical appeal MVT. Here, we formally introduce rMVT (r stands for...
Abstract Root‐knot nematodes, Meloidogyne spp ., are soil‐borne polyphagous pests with major impact on crop yield worldwide. Resistant crops efficiently control avirulent root‐knot but favour the emergence of virulent forms. Since virulence is associated fitness costs, susceptible counter‐select nematodes. In this study, we identify optimal rotation strategies between and resistant to nematodes maximize yield. We developed an epidemiological model describing within‐season dynamics or plant...
Plant communities are shaped by bottom-up processes such as competition for nutrients and top-down herbivory. Although much theoretical work has studied how herbivores can mediate plant species coexistence, indirect effects caused the carnivores that consume have been largely ignored. These significant on plants altering herbivore density (density-mediated effects) behavior (trait-mediated effects). Carnivores differ in traits, particularly their hunting mode, cause different and,...
The Marginal Value Theorem (MVT) is a cornerstone of biological theory. It connects the quality and distribution patches in fragmented habitat to optimal time an individual should spend exploiting them, thus its rate movement. However, predictions regarding how alterations impact strategies have remained elusive, with heavy reliance on graphical arguments. Here we derive sensitivity realized fitness residence times general attributes, for homogeneous heterogeneous habitats, retaining level...
The modeling of coevolutionary races has traditionally been dominated by methods invoking a timescale separation between ecological and evolutionary dynamics, the latter assumed to be much slower than former. Yet it is becoming increasingly clear that in many cases two processes occur on similar timescales such "rapid" evolution can have profound implications for dynamics communities ecosystems. After briefly reviewing separations most common coevolution theory, we use general model...