The role of stochastic and deterministic processes in the occurrence of an uncommon functional group

Statistical analyses for dissertation chapter on the factors explaining the presence/absence of aquatic plant species in lakes and ponds in Connecticut, USA.

Includes:

• Generalized linear models for presence/absence species (logistic regression)
• Principal components analysis (PCA) of environmental conditions
• Mapping of PCA and GLM results
• Permutation test to generate null expectation for pressence of the floating plant functional group