Week 9

Zero-inflated models, Spatial GLMMs

Note that there is no lab on Wednesday due to the UMass Marine Science Symposium (all are welcome to attend).

Gavin is out sick so there is a slight change in plans. Lecture materials are via recordings, class sessions on Tuesday and Thursday will be question/answer sessions and chances to get feedback/help from others on your projects.

Prepare

📖 Tue:

• Lecture 14 - Zero inflated models (Recording)

• Reading: Chapter 11 of Zuur et al. 2009

📖 Thu:

• Lecture 15 - Spatial GLM(M)s (Recording - lecture starts ~20 min in)

Participate

🖥️ Lecture 14 slide deck (from 2020)

• Rmd with examples from the lecture
• NB: Today I would likely fit the models in the lecture solely using glmmTMB, e.g. using code similar to the owls example below
• Owls example, zero inflation using glmmTMB (Brooks et al. 2017)
  • paper with rationale for models by Bolker et al. (2012)
• Data sets can be found in the class-data folder.

🖥️ Lecture 15 slide deck (from 2020)

• Rmd with examples from the lecture

• NB: In future offerings, I will replace a lot of this material with focus on sdmTMB, which allows us to use the same type of formula syntax we’ve been using. Here’s a bonus lecture on sdmTMB (recording from my Ecosystem models class, lecture by Dr. Eric Ward)

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