Ecological Archives M077-003-A4

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 D. ANOVA testing the effects of transect, tidal elevation, and species of propagule on the mean proportion of marked propagules that failed to disperse from a release point.

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 that failed to move out of the 25-cm radius circle (centered on a release point) into which they were originally deposited. Data for each species are for the full periods of monitoring: two-week values for Laguncularia and four-week values for Avicennia and Rhizophora. Analysis is mixed-model with transect treated as a random factor, and elevation and species as fixed factors. Proportions were arcsine transformed prior to analysis to homogenize variances (C = 0.142, P > 0.05).

Source of variation

df

MS

F

P

Transect (T)

2

755.318

2.977

0.059

Elevation (E)

2

922.952

3.528

0.131

Species (S)

2

22070.956

192.010

< 0.001

T × E

4

261.619

1.031

0.400

T × S

4

114.947

0.453

0.770

E × S

4

287.773

2.717

0.107

T × E × S

8

105.931

0.418

0.905

Error

54

253.709

   


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