10.1 Introduction
We will be working with data from Table 2 of Medley and Clements (1998). (This data is featured in the ecological stats book by Quinn and Keough (2002), though I’m not a fan of how they analyse it.) The paper looks at how diatoms(photosynthesizing microorganisms known for their silica shells) are impacted by water quality in mountain streams.
10.1.1 Learning goals
10.1.2 Learning objectives
By the end of this lesson students will be able to
- Download raw data files by hand from the internet
- Load .csv files using the R command read.csv()
- Load .csv files using RStudio’s point-and-click interface
10.1.3 R packageas
10.1.4 R commands
- read.csv
- View
- setwd
- getwd
- list.files
- read.csv
- ls
- dim
- names
- summary
10.1.5 Files
- Medley1998.csv
10.1.6 Potential Hangups
10.1.7 References
Medley & Clements. 1998. Responses of diatom communities to heavy metals in streams: The influence of longitudinal variation. [Ecological Applications 8:631-644.] (https://www.jstor.org/stable/2641255)
Quinn & Keough. 2002. Experimental design and data analysis for biologists.. A pdf version of the book is available online for free..