Ecological Archives M076-001-A4
John L. Maron, James A. Estes, Donald A. Croll, Eric M. Danner, Sarah C. Elmendorf, and Stacey L. Buckelew. 2006. An introduced predator alters Aleutian Island plant communities by thwarting nutrient subsidies. Ecological Monographs 76:3–24.
Appendix D. Repeated-measures ANOVA results for the first fertilization experiment conducted on Adak Island.
Response variable: graminoid biomass
| Source |
df
|
MS
|
F
|
P
|
| Between subjects |
|
|
|
|
| Fertilization |
2
|
2615
|
26
|
0.0001
|
| Site |
1
|
2.7
|
2.7
|
0.87
|
| Within subjects |
|
|
|
|
| Year |
2
|
1908
|
25.0
|
0.0001
|
| Year × Fertilization |
4
|
533
|
7.0
|
0.001
|
| Year × Site |
2
|
0.69
|
0.009
|
0.99
|
| Year × Site × Fertilization |
4
|
23.2
|
0.30
|
0.87
|
Response variable: dwarf shrub biomass
| Source |
df
|
MS
|
F
|
P
|
| Between subjects |
|
|
|
|
| Fertilization |
2
|
144.6
|
1.9
|
0.17
|
| Site |
1
|
238.2
|
3.09
|
0.09
|
| Within subjects |
|
|
|
|
| Year |
2
|
1067
|
16.6
|
0.0001
|
| Year × Fertilization |
4
|
463.3
|
7.2
|
0.0001
|
| Year × Site |
2
|
52.8
|
0.82
|
0.44
|
| Year × Site × Fertilization |
4
|
33.4
|
0.52
|
0.72
|
Response variable: species richness
| Source |
df
|
MS
|
F
|
P
|
| Between subjects |
|
|
|
|
| Fertilization |
2
|
24.1
|
0.77
|
0.47
|
| Site |
1
|
30.0
|
0.96
|
0.34
|
| Within subjects |
|
|
|
|
| Year |
2
|
82.8
|
12.5
|
0.0001
|
| Year × Fertilization |
4
|
20.7
|
3.1
|
0.02
|
| Year × Site |
2
|
1.4
|
0.21
|
0.81
|
| Year × Site × Fertilization |
4
|
9.5
|
1.4
|
0.23
|
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