Structural equation model representing an initial hypothesis regarding the potential effects of two biocontrol flea beetles, BioA (Aphthona nigriscutus) and BioB (Aphthona lacertosa), on an invasive plant (Euphorbia esula). Stem and beetle densities were measured over two years and the change in stem density between years 1 and 2 computed (StemChg12).

  Part of: Grace JB (2020) A 'Weight of Evidence' approach to evaluating structural equation models. One Ecosystem 5: e50452.