Using recovered radio transmitters to estimate positioning error and a generalized Monte Carlo simulation to incorporate error into animal telemetry analysis

Table 2 Movement information based on sequential pairs of detections for a fish at large

Date	Days BTW	Det1	Det2	Distance	Distance SD	US_p	DS_p	MoveSimp	MoveSimp_0.8
11/6	2	Whip-117	Yagi-137	− 75	36	0.994	0.006	True	True
11/13	7	Yagi-137	Yagi-78	2893	222	< 0.001	1.00	True	True
11/14	1	Yagi-78	Yagi-73	254	309	0.162	0.838	False	False
11/15	1	Yagi-73	Yagi-120	− 285	186	0.950	0.050	True	False
11/18	3	Yagi-120	Yagi-75	245	172	0.064	0.936	True	False
11/20	2	Yagi-75	Yagi-175	157	251	0.164	0.836	True	False
11/21	1	Yagi-175	Yagi-206	− 63	11	1.00	< 0.001	True	True
11/27	6	Yagi-206	Yagi-111	− 112	107	0.932	0.068	True	False
12/3	6	Yagi-111	Yagi-54	195	241	0.216	0.784	False	False
12/5	2	Yagi-54	Yagi-100	− 586	249	0.992	0.008	True	False
12/9	4	Yagi-100	Whip-59	171	254	0.228	0.772	False	False
12/10	1	Whip-59	Yagi-125	− 117	223	0.726	0.274	False	False
12/11	1	Yagi-125	Yagi-104	82	104	0.208	0.792	False	False
12/12	1	Yagi-104	Yagi-57	322	263	0.108	0.892	False	False
12/16	4	Yagi-57	Whip-30	− 1013	859	0.880	0.120	True	False

Each row shows a comparison of the prior detection in the time series to the detection on the date shown. Days BTW = days between the two sequential detections; Det1 = type of antenna used in the first detection and received signal strength of detection; Det2 = type of antenna used in the second detection and received signal strength; Distance = estimated distance traveled along the river (downstream is negative) based on Monte Carlo (MC) simulation; SD = MC-based standard deviation for distance moved; US_p = MC-based p-value for upstream movement; DS_p = MC-based p-value for downstream movement; MoveSimp = polygon-based assessment of movement; MoveSimp_0.8 = polygon-based assessment of movement using upper 80% prediction interval

ISSN: 2050-3385