Table 3.
Results of 2-way ANOVAs and tests of the differences in DHA/EPA of POM and of each zooplankton size class between seasons, regions and the interaction between both factors.
| POM | Small | Medium | Large | ||
|---|---|---|---|---|---|
| region | F | 3.23 | 3.24 | 14.97 | 4.06 |
| p | 0.08 | 0.04 | <0.001 | 0.02 | |
| South-Central | North-Central, North-South | North-Central | |||
| season | F | 2.63 | 10.91 | 34.25 | 65.96 |
| p | 0.13 | <0.001 | <0.001 | <0.001 | |
| Summer-Spring | Spring-Winter, Spring-Summer | Spring-Winter, Spring-Summer | |||
| region:season | F | 0.14 | 1.3 | 1.99 | 3.38 |
| p | 0.87 | 0.27 | 0.09* | 0.01 | |
| Central: Spring-Winter, Spring-Summer; North: Spring-Winter; South: Spring-Summer; Summer: North-Central | Differences between spring and summer were significant in all regions |
Significant differences between particular seasons, regions and their interactions were tested with Tukey HSD post hoc tests, and only combinations where p < 0.05 are presented in the table (*although the overall interaction region:season was not significant for the medium size zooplankton (p = 0.09), the Tukey HSD test output did show significant differences for the one-to-one interactions within each particular region season as detailed below).