Rarefaction and extrapolation

Background This is a guest post written by Joseph Mack This post, written by Joseph Mack, explores the working of the unified interpolation/extrapolation tools described in Colwell et al. 2012 Journal of Plant Ecology “Models and estimators linking individual-based and sample-based rarefaction, extrapolation and comparison of assemblages” doi: 10.1093/jpe/rtr044. Joseph shared this tutorial with theContinue reading “Rarefaction and extrapolation”

Scale-dependent biodiversity patterns

Guest Post from Connor Whitaker I’m a student in a graduate-level discussion-based seminar that Michael is teaching: “Frontiers in Biodiversity Measurement.” As part of the course, we are expected to “take point” on one paper during the semester, lead the discussion, and craft a tutorial in R. We were given a lot of creative libertyContinue reading “Scale-dependent biodiversity patterns”

Seesaw plots illustrate “mean rarity”

When I took a course on group theory, my clever classmates would read the textbook, and a new abstract concept was theirs… they could fill in the examples of the groups themselves, and come up with new examples. I usually couldn’t do this. In order to generalize, first I had to work through all theContinue reading “Seesaw plots illustrate “mean rarity””