What This Document Is
This is an introductory lab guide focused on Geometric Morphometrics, a powerful set of techniques used in evolutionary biology and ecology. Specifically, it serves as Lab 6 for Integrative Biology 200B (Ecology and Evolution) at the University of California, Berkeley. It’s designed to provide a foundational understanding of how to quantify and analyze biological shape using mathematical principles and specialized software. The material bridges theoretical concepts with practical application, offering a starting point for incorporating shape analysis into research projects.
Why This Document Matters
This resource is ideal for students enrolled in advanced biology courses, particularly those with an interest in evolutionary developmental biology, morphology, or quantitative methods. It’s most valuable when you’re beginning to explore how shape variation relates to biological processes like allometry, heterochrony, or adaptation. Researchers looking for a concise overview of the core principles of geometric morphometrics will also find it beneficial. Access to the full lab guide will equip you with the knowledge to begin applying these techniques to your own studies.
Topics Covered
* The mathematical definition of ‘shape’ and its importance in biological research.
* The concept of ‘shape space’ and how objects are represented within it.
* Landmark-based data collection and its role in geometric morphometrics.
* Considerations for selecting appropriate landmarks on biological specimens.
* An introduction to key software used in geometric morphometrics workflows.
* The importance of standardizing for location, scale, and rotation when analyzing shape.
What This Document Provides
* A theoretical framework for understanding the principles behind geometric morphometrics.
* Background information on relevant resources and software packages.
* An overview of the process of digitizing landmark data from specimens.
* Discussion of the challenges and considerations involved in landmark selection.
* Context for how geometric morphometrics can be integrated into broader research projects.
