手法を比較

	食物網トポロジー解析	種蓄積曲線 (Species Accumulation Curve)
分野	生態学	生態学
系統	Process / pipeline	Process / pipeline
提唱年	2000	1968
提唱者	Richard Williams and Neo Martinez	Henry Sanders
種類	ecological network characterization	biodiversity quantification and comparison
原典	Dunne, J. A., Williams, R. J., & Martinez, N. D. (2002). Network structure and robustness of marine food webs. The American Naturalist, 160(1), 117-129.	Colwell, R. K. (1994). Estimating terrestrial biodiversity through extrapolation. Philosophical Transactions of the Royal Society B, 345(1311), 101-118.
別名	food web structure, network topology, trophic network, food chain analysis	rarefaction, species accumulation curve, species richness curve
関連	4	4
概要	Food web topology analysis characterizes the structure of predator-prey interactions within ecological communities using network metrics. Pioneered by Williams and Martinez (2000) and extended by Dunne and colleagues (2002), this approach maps which species eat which and quantifies network properties (connectivity, clustering, robustness). Understanding food web structure reveals how ecosystems are organized, how stable they are to species loss, and what roles different species play in ecosystem function.	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.