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. 2021 May 19;16(5):e0250510. doi: 10.1371/journal.pone.0250510

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.