Re: [R-sig-eco] quantifying directed dependence of environmental factors
On Thu, Mar 7, 2013 at 9:20 PM, Sarah Goslee sarah.gos...@gmail.com wrote: ... There's a fair bit of literature on Mantel-based path analysis, and other similar dissimilarity-based approaches. SEM can be used with composition as well, although not (I think) with the intermediate step of calculating dissimilarities. Besides journal articles employing those techniques, I like both of these: J. B. Grace, Structural Equation Modeling and Natural Systems, Cambridge University Press, Cambridge, UK, 2006. B. Shipley, Cause and Correlation in Biology: A User’s Guide to Path Analysis, Structural Equations and Causal Inference, Cambridge University Press, Cambridge, UK, 2000. I recently stumbled on a great book on path modelling using PLS (with R) that is freely downloadable at http://is.gd/BxqIEL Ivailo -- UBUNTU: a person is a person through other persons. ___ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
Re: [R-sig-eco] quantifying directed dependence of environmental factors
On Thu, Mar 7, 2013 at 2:13 PM, Rich Shepard rshep...@appl-ecosys.com wrote: On Thu, 7 Mar 2013, Philippi, Tom wrote: I would look at packages bio.infer, paltran, fossil, and analogue, and search to see if anyone has pushed them in the direction you want to go. bio.infer is based on the EPA's EMAP-West (Environmental Monitoring and Analysis Program for the western states) and uses benthic macroinvertebrates and fish with selected water chemistry parameters. It uses the ITIS (International Taxonomic Identification System) to provide consistency in naming taxa to the lowest reasonable level. Conceptually, one could assemble equivalent dataframes for diatom taxa and environmental conditions, but I don't know if ITIS has plants/algae in the system; problably does. However, the biota-environments relationships would be based on current conditions and whether this would be valid for sediment core data would need to be judged by a limnologist, not a stream ecologist like me. Rich Rich: thank you. I am not sure about the ITIS, but maybe my colleague does. I will ask him. Thanks again. Jay ___ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
Re: [R-sig-eco] quantifying directed dependence of environmental factors
I recently stumbled on a great book on path modelling using PLS (with R) that is freely downloadable at http://is.gd/BxqIEL Ivailo -- Ivailo: very cool. Thank you. Jay ___ R-sig-ecology mailing list R-sig-ecology@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-ecology
