Ecological Archives M077-003-A2

Wayne P. Sousa, Peter G. Kennedy, Betsy J. Mitchell, and Benjamín M. Ordóñez L. 2007. Supply-side ecology in mangroves: do propagule dispersal and seedling establishment explain forest structure? Ecological Monographs 77:53–76.

Appendix B. ANOVAs testing the effects of transect, tidal elevation, and species of propagule on the mean proportion of marked propagules that were relocated after two or four weeks.

ANOVA examining the influence of transect (Transect: BM, PL, or MS), tidal elevation (Elevation: high, mid, or low), and species of propagule (Species: Avicennia, Laguncularia, or Rhizophora) on the mean proportions of marked propagules relocated two and four weeks after being deposited at a particular release point. Analysis I compared recovery of all three species’ propagules over two-week periods, while Analysis II compared recovery of Avicennia and Rhizophora over the entire four-week period of monitoring. See text for details. Analyses were mixed-model with transect treated as a random factor, and elevation and species as fixed factors. Proportions were arcsine transformed prior to analysis.

   

Analysis I

 

Analysis II

Source of variation

df

MS

F

P

 

MS

F

P

Transect (T)

2

45.406

0.357

0.701

 

86.921

0.438

0.649

Elevation (E)

2

461.239

1.428

0.340

 

217.242

0.959

0.457

Species (S)

2, 1

8559.227

168.779

<0.001

 

14547.888

93.469

0.011

T × E

4

295.011

2.323

0.068

 

226.534

1.141

0.353

T × S

4, 2

50.713

0.399

0.808

 

155.644

0.784

0.464

E × S

4, 2

64.222

0.286

0.879

 

250.560

0.772

0.521

T × E × S

8, 4

224.804

1.770

0.104

 

324.617

1.634

0.187

Error

54, 36

127.005

     

198.624

   

† df for Analyses I and II, respectively.



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