Table 1. Multivariate linear regression analysis of body condition of American crocodiles (Crocodylus acutus) captured in South Florida from 1978–2015.
Variable | β | SE | P |
---|---|---|---|
Year | -0.001 | 0.001 | 0.942 |
Season (wet/dry) | -0.105 | 0.026 | <0.001*** |
Size class (ref Juvenile) | |||
Size class Subadult | 0.304 | 0.024 | <0.001*** |
Size class Adult | 0.453 | 0.029 | <0.001*** |
Area (ref NEFB) | |||
Area CRL | 0.027 | 0.040 | 0.505 |
Area WEST | 0.116 | 0.031 | <0.001*** |
Area BBC | 0.102 | 0.041 | 0.014** |
Area CAPE | 0.098 | 0.040 | 0.015** |
Area FLAM | 0.246 | 0.034 | <0.001*** |
Habitat (ref Canal) | |||
Cove | -0.001 | 0.030 | 0.963 |
Pond | 0.133 | 0.052 | 0.011** |
Creek/River | 0.076 | 0.043 | 0.076 |
Exposed Shoreline | 0.090 | 0.059 | 0.131 |
Salinity Model (N = 707) | |||
Size class (ref Juvenile) | |||
Size Class Subadult | 0.294 | 0.027 | <0.001*** |
Size Class Adult | 0.452 | 0.032 | <0.001*** |
Salinity Days Low/year | -0.001 | 0.001 | 0.056 |
Salinity Days High/year | -0.002 | 0.001 | 0.009** |
Salinity Max/year | -0.002 | 0.002 | 0.402 |
Salinity Min/year | 0.010 | 0.003 | 0.002** |
Salinity and Area Model (N = 707) | |||
Size class (ref Juvenile) | |||
Size class Subadult | 0.311 | 0.028 | <0.001*** |
Size class Adult | 0.467 | 0.034 | <0.001*** |
Area (ref NEFB) | |||
Area CRL | 0.101 | 0.049 | 0.833 |
Area WEST | 0.103 | 0.043 | 0.018** |
Area BBC | 0.079 | 0.059 | 0.179 |
Area CAPE | 0.172 | 0.080 | 0.031* |
Area FLAM | 0.229 | 0.065 | <0.001*** |
Salinity Days Low/year | -0.001 | 0.001 | 0.128 |
Salinity Days High/year | -0.001 | 0.001 | 0.723 |
Salinity Max/year | -0.003 | 0.002 | 0.248 |
Salinity Min/year | -0.002 | 0.005 | 0.677 |
Salinity is measured in practical salinity units, β is an unstandardized coefficient of regression, Area/Location (NEFL = NE Florida Bay area, CRL = Crocodile Lake National Wildlife Refuge area, West = West Lake/Seven Palm area, BBC = Biscayne Bay Complex, Cape = Cape Sable area, Flamingo = Flamingo area,
*p <0.05,
**p <0.01,
***p <0.001.