Applied Forest Ecology & Silviculture Lab

Book

 

Book by JeriLynn E. Peck

 

Multivariate Analysis for Community Ecologists:

Step-by-Step using PC-ORD

 

Available from MjM Software at www.pcord.com

 

Supplements

 

Errata

Purpose:

a) a required supplement to the PC-ORD workshops

b) a stand-alone guide for self-taught beginning multivariate analysis using the PC-ORD software

Format:

The book introduces techniques and procedures in the order in which you would use them if you were to follow this 10-step analysis process:

  1. get yourself ready--brush up on basic statistical concepts

  2. get your data ready--enter and screen the data for errors

  3. get your data structured--structure the matrix(ces) for your question of interest

  4. explore and prepare your data--get to know the properties of your data

  5. select a model form and tools--select tools appropriate to your data and question

  6. apply the tools: take a quick look

  7. apply the tools: look for confirmation

  8. apply the tools: pick and choose

  9. interpret your results--use graphing tools to infer relationships

  10. present your ‘story’--customize figures to convey your story

Contents: 

1. Univariate carryover

2. Define your analysis objective

3. Matrix structures

4. Starting in PC-ORD

5. Inputting your data

6. Screening your data

7. Sampling adequacy

8. Structuring your matrices

9. What have you actually measured?

10. What do your zeros mean?

11. What do your non-zeros mean?

12. How variable are your data?

13. Selecting a distance measure

14. Tweaking to improve the signal

15. Reweighting to match the objective

16. Selecting a model form

17. Selecting the tools

18. What is ordination?

19. Weighted averaging (WA)

20. Polar ordination (Bray-Curtis)

21. Canonical correspondence analysis (CCA)

22. Redundancy analysis (RDA)

23. Principal components analysis (PCA)

24. Nonmetric multidimensional scaling (NMS)

25. Cluster analysis

26. Multi-response permutation procedure (MRPP)

27. Distance-based MANOVA (PerMANOVA)

28. SumF

29. Indicator species analysis (ISA)

30. Mantel test

31. Finding your story

32. Communicating your message

Appendix A:  blank page for note taking

Appendix B:  Check-list template

Appendix C:  Example analyses (9 different types)

Appendix D:  What to report

Appendix E:  Other PC-ORD tools

Appendix F:  Further reading

What you'll learn:

For each tool, there are sections on:

  • what it’s good for

  • what it actually does

  • what it means

  • what you need in order to run it

  • what you get in the output

  • what you should know about it

  • how to run it in PC-ORD v. 6

  • when you should use it

Details:

 

Peck, J.E. 2010. Multivariate Analysis for Community Ecologists: Step-by-Step using PC-ORD.

     MjM Software Design, Gleneden Beach, OR.

162 pages, spiral bound to lay flat, 100% recycled paper

159 figures

Errata:

p. 42:  The description of Whittaker's beta diversity is backwards and should instead read "by dividing gamma diversity by mean alpha diversity (the average for the 'S' column) and subtracting 1".

School of Forest Resources

Silviculture Lab Home

 College of Agricultural Sciences

Copyright -- Alternative Media -- Affirmative Action

Please contact the webmaster for problems with this site.