Are some species more deterministic than others?

Are they more deterministic than a stochastically generated dataset?

How does determinism vary with sample size?

Do deterministic species have a narrow niche specificity?

How much niche overlap is there within genera?

Are some species more deterministic than others?

All the Argyrodermas and C. spissum had a mean AUC below 80. Overall, the AUCs were high.

n = 20
Figure 1. The mean AUCs per species from 20 models made with randomly chosen plots.

Figure 1. The mean AUCs per species from 20 models made with randomly chosen plots.

Are they more deterministic than a stochastically generated dataset?

Null models were made by permuting the species occurrences with respect to the soil variables, while total number of occurrences per species and plot were fixed. The models predicted onto real data.

Figure 2. AUCs from stochastically generated data. n = 12

Figure 2. AUCs from stochastically generated data. n = 12

What do they look like side by side? The actual data definitely predicts better. Would ttests or anova be more suitable here?

How does determinism vary with sample size?

In general, sample size had no effect.

Do deterministic species have a narrow niche specificity?

Outlying means analysis (OMI)

Niche position and niche breadth on the first two axes of OMI analysis

How much niche overlap is there within genera?

Ruschia

Argyroderma

Cephalophyllum

Dicro-Oophytum