Compară metode

	Analiza topologiei rețelelor trofice	Modelul de amestec SIAR
Domeniu	Ecologie	Ecologie
Familie	Process / pipeline	Process / pipeline
Anul apariției	2000	2010
Autorul original	Richard Williams and Neo Martinez	Andrew Parnell
Tip	ecological network characterization	diet and source apportionment analysis
Sursa seminală	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.	Parnell, A. C., Inger, R., Bearhop, S., & Jackson, A. L. (2010). Source partitioning using stable isotopes: coping with too much variation. PLoS ONE, 5(3), e9672.
Denumiri alternative	food web structure, network topology, trophic network, food chain analysis	isotope mixing model, Bayesian mixing model, source apportionment, diet analysis
Înrudite	4	4
Rezumat	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.	The Stable Isotope Analysis in R (SIAR) mixing model is a Bayesian framework for estimating the proportional contributions of dietary sources to a consumer, using stable isotope ratios. Developed by Parnell and colleagues (2010) and implemented in the R package siar (and its successor MixSIAR), this method integrates isotopic data from potential food sources and consumers to infer diets. It accounts for uncertainty in isotope fractionation (the shift in isotope ratios between diet and tissue) and natural variation among source populations, producing probability distributions rather than point estimates of diet composition.