手法を比較

	種蓄積曲線 (Species Accumulation Curve)	機能的多様性（Functional Diversity）
分野	生態学	生態学
系統	Process / pipeline	Process / pipeline
提唱年	1968	2008
提唱者	Henry Sanders	Olivier Mouillot
種類	biodiversity quantification and comparison	trait-based diversity analysis
原典	Colwell, R. K. (1994). Estimating terrestrial biodiversity through extrapolation. Philosophical Transactions of the Royal Society B, 345(1311), 101-118.	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.
別名	rarefaction, species accumulation curve, species richness curve	functional traits, trait diversity, ecological niche, functional space
関連	4	4
概要	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.	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.