BIOENV
This page is a stub
This page is under construction. If you would like to contribute to this endpoint, please let us know through our user forum!
== incomplete ==
The main idea...
The BIOENV procedure (Clarke and Ainsworth, 1993) is a dissimilarity-based and exploratory method concerned with identifying that subset of a set of explanatory variables whose Euclidean distance matrix correlates maximally with the Bray-Curtis dissimilarity matrix derived from count data (e.g. abundance data) obtained from the same sites or samples (i.e. objects). This procedure generally uses Spearman rank-based correlations and has some similarities with the Mantel test and Procrustes analysis.
Warnings
If the explanatory variables selected through BIOENV are used in further analysis, there is a risk of data dredging.
Note, that several properties of (dis)similarity-based approaches have been criticised (Warton et al., 2012).
Different implementations may have key differences that can result in incomparable results.
This technique is intended as an exploratory approach, and should be followed with more rigourous tests of association (e.g. constrained analyses)
Walkthroughs featuring BIOENV
Implementations
References
Clarke KR, Ainsworth M (1993) A method of linking multivariate community structure to environmental variables. Mar Ecol Prog Ser. 92:205-219.
Warton DI, Wright TW, Wang Y (2012) Distance-based multivariate analyses confound location and dispersion effects. Methods Ecol Evol. 3:89–101.