Ecological Archives E094-176-A3
Melanie J. Bishop, Jill Fraser, Paul E. Gribben. 2013. Morphological traits and density of foundation species modulate a facilitation cascade in Australian mangroves. Ecology 94:1927–1936. http://dx.doi.org/10.1890/12-1847.1
Appendix C. ANOVAs examining interacting effects of pneumatophore density and algal morphology on algal retention by experimental plots, and the colonization of plots by epifaunal mollusks.
Table C1. Analyses of variance comparing algal biomass among experimental treatments (6 levels: 1 control, receiving no algae, and 5 algal treatments, receiving one of the morphs) and heights (3, 7, or 10 cm) of pneumatophore mimics in experimental plots. Data were analyzed untransformed. n = l6. Terms significant at α = 0.05 are highlighted in bold.
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1 month |
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2 months |
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4 months |
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df |
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MS |
F |
p |
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MS |
F |
P |
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MS |
F |
p |
Treatment |
5 |
|
8.62 |
105.5 |
<0.001 |
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2.02 |
37.0 |
<0.001 |
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0.57 |
17.9 |
<0.001 |
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Control vs. algal morphs |
1 |
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32.68 |
12.6 |
0.024 |
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5.82 |
5.5 |
0.080 |
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0.80 |
1.7 |
0.266 |
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Among algal morphs |
4 |
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2.60 |
26.6 |
<0.001 |
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1.07 |
16.4 |
<0.001 |
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0.51 |
14.7 |
<0.001 |
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Height |
2 |
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1.17 |
14.3 |
<0.001 |
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0.53 |
9.7 |
<0.001 |
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0.21 |
6.6 |
0.002 |
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Treatment × height |
10 |
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0.08 |
1.0 |
0.489 |
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0.11 |
2.1 |
0.036 |
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0.05 |
1.7 |
0.097 |
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Control × height |
2 |
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0.22 |
2.7 |
0.070 |
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0.11 |
2.0 |
0.141 |
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0.07 |
2.2 |
0.119 |
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Algal morphs × height |
8 |
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0.04 |
0.4 |
0.903 |
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0.11 |
1.7 |
0.103 |
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0.05 |
1.4 |
0.193 |
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Residual |
90 |
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0.08 |
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0.05 |
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0.03 |
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Table C2. Analyses of variance comparing the (a) abundance and (b) richness of eipfanal molluscs among experimental treatments (6 levels: 1 control, receiving no algae, and 5 algal treatments, receiving one of the morphs) and heights (3, 7, or 10 cm) of pneumatophore mimics in experimental plots. Data were analyzed untransformed. n = 6. Terms significant at α = 0.05 are highlighted in bold.
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1 month |
|
2 months |
|
4 months |
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df |
|
MS |
F |
p |
|
MS |
F |
P |
|
MS |
F |
p |
Treatment |
5 |
|
4.2 |
3.8 |
0.004 |
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1.8 |
1.4 |
0.237 |
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8.1 |
0.5 |
0.756 |
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Control vs. algal morphs |
1 |
|
11.0 |
4.4 |
0.104 |
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1.8 |
1.0 |
0.372 |
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19.6 |
3.7 |
0.126 |
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Among algal morphs |
4 |
|
2.5 |
1.9 |
0.122 |
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1.8 |
1.4 |
0.250 |
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5.3 |
0.3 |
0.855 |
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Height |
2 |
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1.6 |
1.5 |
0.238 |
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6.0 |
4.7 |
0.012 |
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42.5 |
2.8 |
0.070 |
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Treatment × height |
10 |
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2.5 |
2.3 |
0.020 |
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1.9 |
1.5 |
0.150 |
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18.5 |
1.2 |
0.304 |
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Control × height |
2 |
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0.1 |
0.1 |
0.903 |
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2.3 |
1.8 |
0.177 |
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18.1 |
1.2 |
0.315 |
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Algal morphs × height |
8 |
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3.1 |
2.4 |
0.025 |
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1.9 |
1.4 |
0.196 |
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18.6 |
1.2 |
0.324 |
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Residual |
90 |
|
1.1 |
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1.3 |
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|
15.5 |
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1 month |
|
2 months |
|
4 months |
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df |
|
MS |
F |
p |
|
MS |
F |
p |
|
MS |
F |
p |
Treatment |
5 |
|
1.90 |
5.04 |
<0.001 |
|
2.71 |
4.8 |
0.001 |
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3.4 |
3.2 |
0.013 |
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Control vs. algal morphs |
1 |
|
5.01 |
4.44 |
0.103 |
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7.35 |
4.8 |
0.095 |
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10.7 |
6.8 |
0.059 |
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Among algal morphs |
4 |
|
1.13 |
2.55 |
0.046 |
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1.54 |
2.6 |
0.041 |
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1.6 |
1.3 |
0.268 |
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Height |
2 |
|
0.68 |
1.79 |
0.173 |
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3.58 |
6.3 |
0.003 |
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3.1 |
2.9 |
0.063 |
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Treatment × height |
10 |
|
1.00 |
2.64 |
0.007 |
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1.54 |
2.7 |
0.006 |
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1.9 |
1.8 |
0.080 |
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Control × height |
2 |
|
0.01 |
0.03 |
0.966 |
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2.22 |
3.9 |
0.023 |
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2.1 |
2.0 |
0.143 |
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Algal morphs × height |
8 |
|
1.24 |
2.81 |
0.009 |
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1.37 |
2.3 |
0.027 |
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1.8 |
1.6 |
0.156 |
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Residual |
90 |
|
0.38 |
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|
0.56 |
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1.1 |
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