Hello
I am using Jari Oksanen's CCA routine from the Vegan package on some estuary
data, following a technique applied in (Anderson, M.J. & Gribble, N.A.,
1998, Partitioning the variation among spatial, temporal and environmental
components in a multivariate data set, Australian Journal of Ecology 23,
158-167).
Some steps in the process require that the dependent matrix be constrained
by one independent matrix, given the affect of another independent matrix.

eg: CCA of species matrix, constrained by the environmental matrix, with
spatial variables treated as covariables
or:  CCA of species matrix, constrained by the temporal matrix, with
environmental and spatial variables treated as covariables

Does anyone know of a partitioning routine able to perform this feat or have
suggestions on how I might approach the problem from scratch?

Cheers
Matt

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