Table C1. Statistical results for contrasts between the patch interior and edge, and interior and matrix for three A. columbi response variables (density, proportion parasitized, and per capita hosts parasitized). Separate paired t tests were performed for each response variable and matrix type.
|
Matrix |
||||
|
Anagrus columbi |
Comparison |
Mudflat |
Native Grass |
Brome |
|
Density |
||||
|
Interior vs. edge |
4.21 (0.002) |
1.63 (0.137) |
0.08 (0.942) |
|
|
Interior vs. matrix |
7.49 (< 0.001) |
3.79 (0.004) |
0.50 (0.627) |
|
|
Proportion parasitized |
||||
|
Interior vs. edge |
3.42 (0.008) |
3.72 (0.005) |
1.55 (0.155) |
|
|
Interior vs. matrix |
6.31 (< 0.001) |
2.68 (0.025) |
2.81 (0.02) |
|
|
Per capita parasitized |
||||
|
Interior vs. edge |
0.60 (0.567) |
4.72 (0.007) |
3.65 (0.007) |
|
|
Interior vs. matrix |
3.12 (0.013) |
0.23 (0.835) |
5.04 (< 0.001) |
|
Notes: Data were derived from experimental host and trap pots placed in cordgrass patches for 7 d. Reported are the t statistics and associated P values. To control for Type I errors associated with this unprotected pairwise comparison test, a sequential Bonferroni correction was used to assess significance for each A. columbi variable. P values in bold were deemed statistically significant.