Auteurs, date et publication :
Auteurs Marie-Anne Félix , Richard Jovelin , Céline Ferrari , Shery Han , Young Ran Cho , Erik C Andersen , Asher D Cutter , Christian Braendle
Publication : BMC Evolutionary Biology
Date : 2025
Volume : 13
Issue : 1
Pages : 10
Catégorie(s)
#CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs François Feer
Publication : Revue de Biologie Tropicale
Date : 2025
Volume : 61
Issue : 2
Pages : 753-768
Catégorie(s)
#CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs Blanka Vlasáková
Publication : Plant Ecology
Date : 2025
Volume : 214
Issue : 2
Pages : 279-290
Catégorie(s)
#CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs Philip Scheibel , François Catzeflis , Agustin Jimenez
Publication : Folia Parasitologica
Date : 2025
Catégorie(s)
#⛔ No DOI found #CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs François Feer
Publication : Revista de Biología Tropical
Date : 2025
Volume : 61
Issue : 2
Pages : 753-768
Catégorie(s)
#⛔ No DOI found #CNRS #FORET NouraguesRésumé
Functional variability (FV) of populations can be decomposed into three main features: the individual variability of multiple traits, the strength of correlations between those traits and the main direction of these correlations, the latter two being known as ‘phenotypic integration’. Evolutionary biology has long recognized that FV in natural populations is key to determining potential evolutionary responses, but this topic has been little studied in functional ecology. Here, we focus on the arctico-alpine perennial plant species Polygonum viviparum L.. We used a comprehensive sampling of seven functional traits in 29 wild populations covering the whole environmental niche of the species. The niche of the species was captured by a temperature gradient, which separated alpine stressful habitats from species-rich, competitive subalpine ones. We sought to assess the relative roles of abiotic stress and biotic interactions in shaping different aspects of functional variation within and among populations, that is, the multi-trait variability, the strength of correlations between traits and the main directions of functional trade-offs. Populations with the highest extent of functional variability were found in the warm end of the gradient, whereas populations exhibiting the strongest degree of phenotypic integration were located in sites with intermediate temperatures. This could reveal both the importance of environmental filtering and population demography in structuring FV. Interestingly, we found that the main axes of multivariate functional variation were radically different within and across population. Although the proximate causes of FV structure remain uncertain, our study presents a robust methodology for the quantitative study of functional variability in connection with species' niches. It also opens up new perspectives for the conceptual merging of intraspecific functional patterns with community ecology.
Auteurs, date et publication :
Auteurs Florian C. Boucher , Wilfried Thuiller , Cindy Arnoldi , Cécile H. Albert , Sébastien Lavergne
Publication : Functional Ecology
Date : 2025
Volume : 27
Issue : 2
Pages : 382-391
Catégorie(s)
#CNRS #Lautaret #UGARésumé
Species enter and persist in local communities because of their ecological fit to local conditions, and recently, ecologists have moved from measuring diversity as species richness and evenness, to using measures that reflect species ecological differences. There are two principal approaches for quantifying species ecological differences: functional (trait-based) and phylogenetic pairwise distances between species. Both approaches have produced new ecological insights, yet at the same time methodological issues and assumptions limit them. Traits and phylogeny may provide different, and perhaps complementary, information about species' differences. To adequately test assembly hypotheses, a framework integrating the information provided by traits and phylogenies is required. We propose an intuitive measure for combining functional and phylogenetic pairwise distances, which provides a useful way to assess how functional and phylogenetic distances contribute to understanding patterns of community assembly. Here, we show that both traits and phylogeny inform community assembly patterns in alpine plant communities across an elevation gradient, because they represent complementary information. Differences in historical selection pressures have produced variation in the strength of the trait-phylogeny correlation, and as such, integrating traits and phylogeny can enhance the ability to detect assembly patterns across habitats or environmental gradients.
Auteurs, date et publication :
Auteurs Marc Cadotte , Cecile H. Albert , Steve C. Walker
Publication : Ecology Letters
Date : 2025
Volume : 16
Issue : 10
Pages : 1234-1244
Catégorie(s)
#CNRS #Lautaret #UGAAuteurs, date et publication :
Auteurs Patrick Saccone , Samuel Morin , Florence Baptist , Jean-Marc Bonneville , Marie-Pascale Colace , Florent Domine , Mathieu Faure , Roberto Geremia , Jonathan Lochet , Franck Poly , Sandra Lavorel , Jean-Christophe Clément
Publication : Plant and Soil
Date : 2025
Volume : 363
Issue : 1-2
Pages : 215-229
Catégorie(s)
#CNRS #Lautaret #UGARésumé
Mountain grassland ecosystems are particularly vulnerable to direct climate impacts and to indirect climate change impacts through farmers’ management adaptation. We modelled expected spatio-temporal trajectories of land management of a mountain grassland landscape in the French Alps under a range of short-term climate and socio-economic scenarios which were constructed using an advanced participatory approach with a variety of stakeholders. First, regional experts from nature conservation and agricultural extension were involved in the co-development of detailed qualitative climate and socioeconomic scenarios, expressed as coherent storylines. Second, to map land management adaptation to these storylines, we used a role playing game whereby farmers were put in an imaginary future situation and asked to make decisions under scenario constraints. For each scenario, game outcomes were used to map future land management at parcels to landscape scales. Main adaptations were conversion from mowing to grazing and increasing manured area, with varying proportions and locations for these two types of changes differing across scenarios, though overall small. These results highlight the limited adaptability of current farmers given a strongly constraining natural and social context. Beyond research outputs, this framework generated interesting outcomes for stakeholders and raised their awareness about the socio-ecological system’s vulnerability to future changes.
Auteurs, date et publication :
Auteurs Pénélope Lamarque , Aloïs Artaux , Cécile Barnaud , Laurent Dobremez , Baptiste Nettier , Sandra Lavorel
Publication : Landscape and Urban Planning
Date : 2025
Volume : 119
Pages : 147-157
Catégorie(s)
#CNRS #Lautaret #UGAAuteurs, date et publication :
Auteurs Alexandra Rodriguez , Amandine Gasc , Sandrine Pavoine , Philippe Grandcolas , Philippe Gaucher , Jérôme Sueur
Publication : Ecological Informatics
Date : 2025
Volume : 21
Pages : 133-143