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Food Webs in Relation to Variation in the Environment and Species Assemblage: A Multivariate Approach

Fig 2

Canonical correspondence analysis (CCA) ordination biplots showing the association between the presence-absence of invertebrate families and environmental predictors in (A) 2008 and (B) 2009.

(A) Four environmental predictors in 2008 measured in seven ponds and (B) seven environmental variables from nine ponds in 2009. The direction of the arrow indicates direction of maximum change and the length is proportional to the rate of change of that variable. See S1 Table for full invertebrate family names.

Fig 2

doi: https://doi.org/10.1371/journal.pone.0122719.g002