Ecological Archives E092-017-A6

Amy L. Freestone and Richard W. Osman. 2011. Latitudinal variation in local interactions and regional enrichment shape patterns of marine community diversity. Ecology 92:208–217.

Appendix F (TABLE F1). Beta diversity values were estimated as the probability that the observed number of shared species in two samples differs from the null expectation of random community membership (Raup-Crick metric). Model included the main effects of Site (random), Rack (nested in Site; random), Taxa (shell, barnacle, upright structure; fixed effect), Structural Complexity (mimic or quadrat; fixed effect), and all interactions. Only significant effects (P < 0.05) are listed.

Region

Source

df

MS

Pseudo-F

P(perm)

Belize

Site

2

8057.2

1.49

0.0007

Rack (Site)

9

5417.5

1.10

0.0001

Rack × Taxa

18

5066.6

1.03

0.0001

Florida

Site

1

8804.2

1.73

0.030

Rack (Site)

5

5110.4

1.04

0.007

Virginia

Site

2

6438

1.29

0.023

Connecticut

Site

2

6991.5

1.38

0.0001

Rack (Site)

9

5113.7

1.04

0.0002


[Back to E092-017]