Species richness and Diversity
Kettle hole-specific temporal dynamics of species richness (S) over all
eight sampling campaigns of 2019 did not follow a clear common trend,
neither for permanent nor for ephemeral kettle holes (figure 6 ).
GLMMs revealed that species richness (S) was related to kettle hole type
and pH (table S2, table S3 ), with a generally higher species
richness at intermediate pH (figure 7) and in permanent rather than in
ephemeral kettle holes (figure S5 ). This trend was also observed
for the Shannon (H’) and Simpson Index (D1), but not
yield statistical significance in a Wilcoxon test (figure S5 ).
The GLMM based on Shannon Index (H’) reveals this diversity measure to
be dependent on the kettle hole location (table S4, table S5 ).