Table 3.

Sensitivity analysis results (area of amphibian habitat within 1 km of catchment boundaries) for InVEST amphibian habitat suitability models with varying threat weights, habitat sensitivity values, and habitat suitability thresholds. The base model, with a habitat suitability threshold of 0.6 and threat weights and habitat sensitivity settings after Mushet et al., 2014, was the primary amphibian model referenced in the present study. CT = crop threat; LT = Lake threat; HT = Short hydroperiod threat; IT = Isolation threat; CS = Habitat sensitivity to crop threat; LS = Habitat sensitivity to lake threat; HS = Habitat sensitivity to short hydroperiod threat; IS = Habitat sensitivity to isolation threat. Areas are in hectares.

			Baseline Scenario Amphibian Habitat within 1km (ha)			Drainage Modernization Scenario Amphibian Habitat within 1km (ha)			Water Quality Wetland Scenario Habitat within 1km (ha)			Drainage Modernization and WQ Wetlands Scenario Habitat within 1km (ha)
Total Area Within 1km of Catchment Boundaries			67,892			67,892			67,892			67,892
All Potential Habitat, Including Depressions			6,529			5,052			7,061			5,589
All Potential Habitat, Not Including Depressions			1,835			1,803			2,371			2,340
Habitat Suitability Threshold			≥ 0.4	≥ 0.6	≥ 0.8	≥ 0.4	≥ 0.6	≥ 0.8	≥ 0.4	≥ 0.6	≥ 0.8	≥ 0.4	≥ 0.6	≥ 0.8
	1	Base Model, After Mushet et al. (2014) CT=0.6, LT=0.2, HT=0.1, IT=0.1; CS=1, LS=0.5, HS=0.5, IS=1	3,860	981	361	3,059	955	359	4,479	1,222	383	3,620	1,197	381
Habitat Suitability Models	2	Balanced Threat Weights CT=0.25, LT=0.25, HT=0.25, IT=0.25; Habitat Sensitivities as in Base Model	6,055	6,055	3,291	4,579	4,579	2,696	6,600	6,600	3,868	5,127	5,127	3,248
	3	Reduced Crop Threat Weight CT=0.4, LT=0.2, HT=0.2, IT=0.2; Habitat Sensitivities as in Base Model	6,055	3,809	908	4,579	3,052	896	6,600	4,403	1,173	5,127	3,604	1,161
	4	Reduced Wetland & Depressional Habitat Sensitivity to Crop and Isolation Threats Threat Weights as in Base Model; CS=0.5, LS=0.5, HS=0.5, IS=0.5	6,055	6,055	2,306	4,579	4,579	2,025	6,600	6,600	2,931	5,127	5,127	2,590
	5	Increased Depressional Habitat Sensitivity to Short Hydroperiod Threat Threat Weights and Sensitivity as in Base Model; Depressional: CS=1, LS=0.5, HS=1, IS=1	2,773	945	355	2,342	928	354	3,399	1,188	377	2,902	1,170	375
	6	Reduced Wetland & Depressional Habitat Sensitivity to All Threats Threat Weights as in Base Model; CS=0.25, LS=0.25, HS=0.25, IS=0.25	6,055	6,055	6,055	4,579	4,579	4,579	6,600	6,600	6,600	5,127	5,127	5,127

CT = Crop threat.

LT = Lake threat.

HT = Short hydroperiod threat.

IT = Isolation threat.

CS = Sensitivity of habitat to crop threat.

LS = Sensitivity of habitat to lake threat.

HS = Sensitivity of habitat to short hydroperiod threat.

IS = Sensitivity of habitat to isolation threat.