Table 3. Standardized GLM results for total species richness, the pallid bat, and Townsend’s big-eared bat.
The absolute value of the coefficient indicates the contribution of each variable to the model. Panel (A) includes all correlated threat variables: unconserved land, urbanization, and artificial light. Panel (B) includes only one of the three correlated threat variables: unconserved land. Panel (C) includes only one of the three correlated threat variables: urbanization. Panel (D) includes only one of the three correlated threat variables: artificial light.
| Threat | Pallid | Townsend’s | Richness | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Est. | SE | Z | P | Est. | SE | Z | P | Est. | SE | Z | P | |
| A | ||||||||||||
| Number of surveys | 5.98E-02 | 4.35E-02 | 1.38 | 0.17 | 1.49E-01 | 5.59E-02 | 2.67 | 0.01 | 1.86E-02 | 5.39E-03 | 3.46 | 0.00 |
| Available water | 4.376E-07 | 1.13E-06 | 0.39 | 0.70 | -4.59E-07 | 1.30E-06 | -0.35 | 0.72 | -1.41E-07 | 1.68E-07 | -0.84 | 0.40 |
| Unconserved land | 1.10E-03 | 9.02E-03 | 0.12 | 0.90 | 4.93E-03 | 1.01E-02 | 0.49 | 0.62 | -2.15E-04 | 1.25E-03 | -0.17 | 0.86 |
| Urbanization | -4.72E-02 | 3.26E-02 | -1.45 | 0.15 | -6.18E-02 | 3.91E-02 | -1.58 | 0.11 | -3.33E-03 | 3.06E-03 | -1.09 | 0.28 |
| Artificial light | 4.09E-02 | 4.82E-01 | -0.09 | 0.93 | -9.58E-01 | 5.77E-01 | -1.66 | 0.10 | -1.05E-01 | 6.21E-02 | -1.68 | 0.09 |
| Pesticide use | 2.23E+00 | 1.59E+00 | 1.40 | 0.16 | 1.71E+00 | 1.76E+00 | 0.97 | 0.33 | -3.41E-02 | 2.04E-01 | -0.17 | 0.87 |
| B | ||||||||||||
| Number of surveys | 5.17E-02 | 3.77E-02 | 1.37 | 0.17 | 9.41E-02 | 3.90E-02 | 2.42 | 0.02 | 1.61E-02 | 5.18E-03 | 3.11 | 0.00 |
| Available water | 9.99E-09 | 1.09E-06 | 0.01 | 0.99 | 1.08E-06 | 1.20E-06 | 0.90 | 0.37 | 2.04E-07 | 1.69E-07 | 1.21 | 0.23 |
| Unconserved land | -9.15E-03 | 7.36E-03 | -1.24 | 0.21 | -1.59E-02 | 7.11E-03 | -2.23 | 0.03 | -2.11E-03 | 9.97E-04 | -2.12 | 0.03 |
| Pesticide use | 1.83E+00 | 1.33E+00 | 1.37 | 0.17 | 1.91E+00 | 1.31E+00 | 1.46 | 0.14 | 9.44E-02 | 1.85E-01 | 0.51 | 0.61 |
| C | ||||||||||||
| Number of surveys | 6.02E-02 | 4.32E-02 | 1.39 | 0.16 | 1.42E-01 | 5.53E-02 | 2.57 | 0.01 | 1.72E-02 | 5.31E-03 | 3.24 | 0.00 |
| Available water | -4.15E-07 | 1.12E-06 | -0.37 | 0.71 | 4.52E-07 | 1.28E-06 | 0.35 | 0.72 | 1.31E-07 | 1.68E-07 | 0.78 | 0.44 |
| Urbanization | -4.39E-02 | 2.39E-02 | -1.83 | 0.07 | -9.06E-02 | 3.09E-02 | -2.93 | 0.00 | -6.33E-03 | 2.25E-03 | -2.82 | 0.00 |
| Pesticide use | 2.18E+00 | 1.41E+00 | 1.55 | 0.12 | 3.25E+00 | 1.62E+00 | 2.01 | 0.04 | 9.41E-02 | 1.83E-01 | 0.52 | 0.61 |
| D | ||||||||||||
| Number of surveys | 6.07E-02 | 3.90E-02 | 1.56 | 0.12 | 1.42E-01 | 4.74E-02 | 3.01 | 0.00 | 1.90E-02 | 5.33E-03 | 3.56 | 0.00 |
| Available water | -1.02E-08 | 1.10E-06 | -0.09 | 0.93 | 7.37E-07 | 1.23E-06 | 0.60 | 0.55 | 1.69E-07 | 1.68E-07 | 1.01 | 0.31 |
| Artificial light | -4.95E-01 | 3.79E-01 | -1.31 | 0.19 | -1.66E+00 | 5.04E-01 | -3.29 | 0.00 | -1.54E-01 | 4.97E-02 | -3.10 | 0.00 |
| Pesticide use | 1.08E+00 | 1.30E+00 | 0.83 | 0.41 | 2.40E-01 | 1.36E+00 | 0.18 | 0.86 | 1.30E-01 | 1.88E-01 | -0.69 | 0.49 |
* = significance (P < 0.05).