Table 3. Model parameter estimates for occupancy and detection for cormorants, egrets, and herons of catfish ponds in the Mississippi Delta.

Parameter estimate, standard error, and p-values are shown. Models were constructed using data collected of species presence and absence on catfish ponds in the Mississippi Delta. N = 2,883 ponds for each species.

	Cormorant			Egret			Heron
Model Variable a	β	SE	p	β	SE	p	β	SE	p
Detection
Intercept	-2.436			-2.140			-1.976
Year (2016)	-0.189	0.062	0.002	-0.226	0.080	0.004	-0.177	0.098	0.071
Year (2017)	-0.210	0.063	<0.001	0.222	0.080	0.005	0.435	0.086	<0.001
Date	2.244	0.063	<0.001	-0.794	0.032	<0.001	-1.051	0.075	<0.001
Date2	0.398	0.031	<0.001	-0.274	0.035	<0.001	-0.689	0.044	<0.001
Date3	-0.780	0.033	<0.001				0.372	0.048	<0.001
Occupancy
Intercept	-0.802			1.609			-0.320
Year (2016)	-0.199	0.151	0.187	0.752	0.207	<0.001	-0.355	0.233	0.127
Year (2017)	0.272	0.165	0.098	0.808	0.188	<0.001	0.033	0.205	0.871
Pond Level
LB	0.351	0.246	0.155	-2.009	0.611	0.001	0.398	0.291	0.171
SHSB	1.754	0.261	<0.001	-1.971	0.626	0.001	-0.084	0.320	0.791
LCMB	2.133	0.416	<0.001	1.125	1.911	0.556	1.660	0.486	<0.001
LCSB	2.054	0.419	<0.001	-0.104	1.022	0.919	1.489	0.457	0.001
LHMB	1.477	0.349	<0.001	-3.371	0.641	<0.001	-0.491	0.373	0.118
LHSB	1.561	0.244	<0.001	-2.192	0.580	<0.001	0.537	0.260	0.038
CFIN	0.972	0.262	<0.001	-0.690	0.584	0.238	2.326	0.346	<0.001
HFIN	2.674	0.297	<0.001	-2.458	0.601	<0.001	0.977	0.290	<0.001
Pond Size	0.893	0.093	<0.001	0.600	0.094	<0.001	1.180	0.113	<0.001
Surrounding Habitat
DistActivity	0.357	0.074	<0.001	0.462	0.099	<0.001
DistRoad	0.081	0.069	0.293	-0.026	0.078	0.738
DistForest	0.198	0.070	0.004	-0.344	0.077	<0.001
Adj (1)	0.908	0.375	0.015	1.186	0.479	0.013
Adj (2)	0.531	0.191	0.005	0.919	0.222	<0.001
Adj (3)	0.270	0.141	0.056	0.534	0.156	<0.001

^a Detection and Occupancy variables: Year: categorical variable of survey year, with 2015 set as the reference; Date: Ordinal data where October 01 is set to 01 of each year; LB: Levee pond with brood catfish; SHSB: split-pond with hybrid catfish in single-batch production; LCMB: Levee pond with channel catfish in multi-batch production; LCSB: Levee pond with channel catfish in single-batch production; LHMB: Levee pond with hybrid catfish in multi-batch production; LHSB: Levee pond with hybrid catfish in single-batch production; CFIN: channel catfish fingerlings; HFIN: hybrid catfish fingerlings; Treatment ponds were set as the reference group; Pond size: pond area in hectares; DistActivity: distance from the pond to the nearest activity center; DistRoad: distance from the pond to the nearest all weather road; DistForest: distance from the pond to the nearest forested area; Adj: adjacent pond index related to the isolation of individual ponds with category 4 set as the reference group