Comparer des méthodes

	Partitionnement de la diversité bêta	Courbe d'accumulation des espèces
Domaine	Écologie	Écologie
Famille	Process / pipeline	Process / pipeline
Année d'origine	2010	1968
Auteur d'origine	Andres Baselga	Henry Sanders
Type	community differentiation analysis	biodiversity quantification and comparison
Source fondatrice	Baselga, A. (2010). Partitioning the turnover and nestedness components of beta diversity. Global Ecology and Biogeography, 19(1), 134-143.	Colwell, R. K. (1994). Estimating terrestrial biodiversity through extrapolation. Philosophical Transactions of the Royal Society B, 345(1311), 101-118.
Alias	beta diversity, species turnover, nestedness, community dissimilarity	rarefaction, species accumulation curve, species richness curve
Apparentées	4	4
Résumé	Beta diversity partitioning quantifies how species composition differs among sites, decomposing community dissimilarity into two components: species turnover (replacement of species across sites) and nestedness (loss of species from species-rich sites). Developed by Baselga (2010), this framework reveals whether sites differ because they have different species (turnover) or because some sites are subsets of others (nestedness). This distinction has ecological and conservation implications: turnover suggests environmental heterogeneity or speciation, while nestedness suggests habitat loss or extinction.	Species accumulation curves describe how the number of observed species increases with cumulative sampling effort. Introduced by Sanders (1968) and developed by Colwell and colleagues, this method enables ecologists to compare biodiversity across sites and estimate total species richness despite incomplete sampling. It addresses a fundamental challenge in ecology: observed species counts are biased by sampling intensity.