Table 1.
Weights of the floral variables used in the Floral Complexity Index. For details on the estimation of the variable level values see S1 Text.
All terms are explained in the text.
Fig 1.
The Floral Complexity Index (FCI) values distributed across the Greek rare and threatened plants’ phylogeny.
Grey bars indicate the relative magnitude of the FCI (highest value: 3.25, lowest: 1.15). Red rectangles mark the “more threatened” (CR, EN or EX) taxa.
Table 2.
Results of the best fitting (based on AIC) GLM showing the effects of the intrinsic and extrinsic variables on the Greek rare and threatened plants’ vulnerability.
Fig 2.
Intrinsic vulnerability factors of the Greek rare and threatened plants.
Effects of the intrinsic variables on plant vulnerability as included in the best fitted logistic GLM based on the backward AIC selection process. (a) Mean value of the FCI (±SE); (b) life form; and (c) floral color. Categorical independent variables (b, c) are presented in spinograms. The width of the columns corresponds to the relative frequency of the “more threatened” and “less threatened” plants in the dataset; the heights of the cells represent the relative frequency of the response variable in every level of the explanatory variables. Colored cells denote statistical significance of the respective level (**: ≤ 0.01, ***: ≤ 0.001).
Fig 3.
Extrinsic vulnerability factors of the Greek rare and threatened plants.
The effects of the extrinsic variables on plant vulnerability as included in the best fitted logistic GLM based on the backward AIC selection process. (a) Mean maximal distance (±SE); (b) mean minimum altitude (±SE); and (c) habitat. The variation of the latter is presented in a spinogram. The width of the columns corresponds to the relative frequency of the “more threatened” and “less threatened” plants in the dataset; the height of the cells represents the relative frequency of the response variable in every type of habitat. Colored cells denote statistical significance of the respective level (**: ≤ 0.01, ***: ≤ 0.001).