Table 3.
Generalized additive model results of best supported models to explain the variability in the frequency of occurrence (FO) of the eight main prey taxa of Australian fur seals at Seal Rocks, Victoria, Australia between 1998 and 2014 (n = 59 seasons). Models are listed by highest deviance explained and an asterisk (*) represents significant covariates (at 0.05 level) in the final model. SOI = Southern Oscillation index, SAM = Southern Annular Mode, SST = sea surface temperature. Preferred conditions of the variable are in brackets: − for negative, N for neutral, + for positive, and A for autumn. Model selection results for the eight main prey taxa are provided in the electronic supplementary material.
| species | wind speed by compass direction (compared with north) |
wind speed | SOI | SAM | SST | season | adjusted r2 | deviance explained | ||
|---|---|---|---|---|---|---|---|---|---|---|
| east | south | west | ||||||||
| redbait | * (N) | * (+) | * (+) | * (A) | 0.748 | 82.8 | ||||
| pilchard | * (−,N) | * (+) | * (+) | 0.799 | 79.3 | |||||
| barracouta | * (+) | * (N) | * (−) | 0.481 | 66.0 | |||||
| red cod | * (−,+) | * (−) | 0.546 | 62.4 | ||||||
| jack mackerel | * (−,N) | 0.490 | 59.3 | |||||||
| gurnard | * (−,N) | * (+) | 0.311 | 48.6 | ||||||
| leatherjacket | *(+) | *(−,N) | 0.226 | 38.6 | ||||||
| arrow squid | * (+) | 0.0283 | 12.9 | |||||||