Ecological Archives M084-022-A6

Elizabeth S. Bryson, Geoffrey C. Trussell, Patrick J. Ewanchuk. 2014. Broad-scale geographic variation in the organization of rocky intertidal communities in the Gulf of Maine. Ecological Monographs 84:579–597. http://dx.doi.org/10.1890/13-1106.1

Appendix F. Results of a four-factor nested ANOVA on Semibalanus balanoides recruitment density.

Site was considered a random factor nested within region and wave exposure and crossed with year.  Data were log transformed to meet the homogeneous variance assumption of ANOVA prior to analysis. Effect size was measured via η².

Source

df

SS

F ratio

Prob > F

η²

Region

1

193.822

324.6618

<0.0001

0.7389

Wave Exposure

1

17.410

29.1527

0.0057

0.0664

Region × Exposure

1

2.058

3.4478

0.1369

0.0078

Site[Region, Exposure] &Random

4

2.388

15.7312

0.0007

0.0091

Year

2

0.796

10.4921

0.0058

0.0030

Year × Region

2

1.429

18.7013

0.0010

0.0054

Year × Exposure

2

0.825

10.8533

0.0052

0.0031

Year × Region × Exposure

2

0.129

1.7033

0.2420

0.0005

Year × Site[Region, Exposure]&Random

8

0.304

0.1056

0.9990

0.0012

Residual

120

43.135

 

 

0.1645


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