Rarefaction Exercise

Steven J. Hageman
Appalachian State University
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An a diverse assemblage of modern gastropods provides a data set for students to learn about sampling protocols, rarefaction and diversity indices.

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Part of a laboratory exercise for upper-level undergraduate course in paleontology.

Skills and concepts that students must have mastered

observation of morphological features
numerical data collection and manipulate
statistical methods associated with diversity and sampling.

How the activity is situated in the course

part of a sequence


Content/concepts goals for this activity

sampling, diversity, specimen-level morphological observations

Higher order thinking skills goals for this activity

combines morphological analysis of diverse gastropods with sampling protocols and comparison of assemblages.

Other skills goals for this activity

numerical data collection, analysis and graphing

Description of the activity/assignment

This version of this exercise is not self standing (must be supported by lecture or reading), however, the material provided outlines the steps for an integrated study of diversity and sampling.

Determining whether students have met the goals

Results of exercises are graded and the material is included on end of term exam.

More information about assessment tools and techniques.

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