Table 2 Parameter estimates from the chosen generalized linear mixed model (model 2) for gray whale fecal glucocorticoid metabolite concentrations using vessel counts from the previous day, sex, month, year, progestin metabolites, androgen metabolites, and body condition (Body Area Index: BAI) as fixed effects and whale identification as random factor.
From: Effects of vessel traffic and ocean noise on gray whale stress hormones
Random effects | Variance | Standard deviation | Fixed effects | Estimate | Standard error | p value |
|---|---|---|---|---|---|---|
Whale ID | 0.000 | 0.000 | Vessel counts from the previous day | 0.415 | 0.108 | 0.001* |
Residual | 0.099 | 0.315 | Sex | − 0.270 | 0.179 | 0.150 |
Year (2017) | 0.527 | 0.361 | 0.163 | |||
Year (2018) | 0.577 | 0.372 | 0.140 | |||
Progestin metabolites | 0.170 | 0.122 | 0.182 | |||
Androgen metabolites | − 0.044 | 0.065 | 0.508 | |||
Body Area Index | − 0.027 | 0.043 | 0.541 | |||
Month (July) | − 0.457 | 0.482 | 0.356 | |||
Month (August) | − 1.063 | 0.278 | 0.001* | |||
Month (September) | − 0.890 | 0.272 | 0.004* | |||
Month (October) | − 0.421 | 0.348 | 0.244 |
