Comparer des méthodes

	Diversité phylogénétique de Faith	Diversité fonctionnelle
Domaine	Écologie	Écologie
Famille	Process / pipeline	Process / pipeline
Année d'origine	1992	2008
Auteur d'origine	David Faith	Olivier Mouillot
Type	evolutionary diversity quantification	trait-based diversity analysis
Source fondatrice	Faith, D. P. (1992). Conservation evaluation and phylogenetic diversity. Biological Conservation, 61(1), 1-10.	Villéger, S., Mason, N. W., & Mouillot, D. (2008). New multidimensional functional diversity indices for a multifaceted framework in functional ecology. Ecology, 89(8), 2290-2301.
Alias	phylogenetic diversity, PD, evolutionary distinctiveness, branch length	functional traits, trait diversity, ecological niche, functional space
Apparentées	4	4
Résumé	Faith's Phylogenetic Diversity (PD), introduced by David Faith (1992), measures the evolutionary diversity within a community by summing the branch lengths of a phylogenetic tree connecting all species. Unlike species richness, which counts species equally regardless of evolutionary relationships, PD weights species by their evolutionary distinctiveness: a community with evolutionarily distant species has higher PD than one dominated by recently diverged species. PD is widely used in conservation to prioritize protection of species and habitats that preserve evolutionary history.	Functional diversity quantifies the range and abundance distribution of functional traits (morphology, physiology, behavior) among species in a community. Developed by Mouillot and colleagues (2008), functional diversity indices measure how different species are in their ecological roles and resource use strategies. Unlike species richness (number of species), functional diversity captures the breadth of ecological strategies, predicting ecosystem function and stability.