Douglas P. Peterson, Kurt D. Fausch, and Gary C. White.  2004.  Population ecology of an invasion:  effects of brook trout on native cutthroat trout.  Ecological Applications 14:754–772.

Appendix B. Parameter estimates for apparent survival (), population size (), and electrofishing capture probabilities () for trout in the four study streams during 1998 through 2001. Abbreviations are: mid = mid-elevation (2500 – 2700 m), high = high-elevation (3150 – 3250 m), CTL = control stream where trout populations were not manipulated, and TRT = treatment streams where brook trout were annually removed. Stream names are:  mid CTL = East Fork Parachute Creek, high CTL = Indiana Creek, mid TRT = Little Muddy Creek, and high TRT = Willow Creek. Adult trout ages 2 and older are denoted age 2+.

Stream	Year	Segment length (m)	Survey dates	Age class	Parameter estimates (SE)
					Brook trout			Cutthroat trout
Mid CTL	1998	700	9/24 – 9/27	0	0.483 (0.029)	362 (9.9)	0.709 (0.039)	0.0601 (0.0192)	199 (7.0)	0.710 (0.0539)
Mid CTL	1999	700	9/3 – 9/9	0	0.163 (0.011)	1616 (42.1)	0.591 (0.025)	0.0126 (0.0117)	119 (6.4)	0.687 (0.0722)
Mid CTL	2000	800	9/27 – 9/30	0	0.059 (0.006)	1720 (24.4)	0.696 (0.018)	0.00136 (0.00239)	25 (1.2)	0.805 (0.0819)
Mid CTL	2001	800	9/25 – 9/28	0	–	391 (4.1)	0.849 (0.023)	–	52 (1.5)	0.842 (0.0640)
Mid CTL	1998	700	9/24 – 9/27	1	0.479 (0.026)	302 (7.5)	0.749 (0.038)	0.371 (0.0907)	37 (1.6)	0.792 (0.0798)
Mid CTL	1999	700	9/3 – 9/9	1	0.287 (0.025)	321 (8.9)	0.747 (0.031)	0.291 (0.0927)	31 (2.2)	0.763 (0.0852)
Mid CTL	2000	800	9/27 – 9/30	1	0.078 (0.018)	398 (16.2)	0.642 (0.037)	0.0198 (0.0281)	22 (2.5)	0.686 (0.135)
Mid CTL	2001	800	9/25 – 9/28	1	–	215 (4.8)	0.846 (0.031)	–	3 (0.1)	0.928 (0.0665)
Mid CTL	1998	700	9/24 – 9/27	2+	0.435 (0.0249)	527 (10.8)	0.732 (0.030)	0.622 (0.101)	41 (0.42)	0.936 (0.0316)
Mid CTL	1999	700	9/3 – 9/9	2+	0.307 (0.0229)	465 (12.9)	0.691 (0.028)	0.310 (0.0729)	55 (5.0)	0.635 (0.0842)
Mid CTL	2000	800	9/27 – 9/30	2+	0.0564 (0.0146)	332 (8.9)	0.781 (0.031)	0.102 (0.0656)	35 (4.2)	0.647 (0.114)
Mid CTL	2001	800	9/25 – 9/28	2+	–	230 (6.8)	0.800 (0.038)	–	8 (0.1)	0.974 (0.0245)
High CTL	1998	950	8/20 – 8/23, 8/29	0	0.0 (0)	5 (1.7)	0.574 (0.265)	–	–	–
High CTL	1999	950	8/17 – 8/19	0	0.0 (0)	14 (9.2)	0.249 (0.212)	–	–	–
High CTL	2000	1082	8/14 – 8/18	0	0.0 (0)	6 (1.7)	0.444 (0.257)	–	–	–
High CTL	2001	1090	8/13 – 8/15	0	–	19 (3.7)	0.582 (0.217)	–	–	–
High CTL	1998	950	8/20 – 8/23, 8/29	1	–	–	–	0.290 (0.131)	28 (14.3)	0.252 (0.155)
High CTL	1999	950	8/17 – 8/19	1	0.850 (0.294)†	3‡	0 (0.0018)†	0.448 (0.135)	28 (4.8)	0.521 (0.172)
High CTL	2000	1082	8/14 – 8/18	1	0.869 (0.274)†	5‡	0 (0.0016)†	0.698 (0.346)	3 (1.0)	0.427 (0.216)
High CTL	2001	1090	8/13 – 8/15	1	–	1‡	0 (0.0036)†	–	33 (8.1)	0.494 (0.169)
High CTL	1998	950	8/20 – 8/23, 8/29	2+	0.875 (0.109)	51 (3.2)	0.733 (0.098)	0.574 (0.066)	97 (4.9)	0.716 (0.0739)
High CTL	1999	950	8/17 – 8/19	2+	0.441 (0.0859)	49 (8.2)	0.484 (0.103)	0.551 (0.0596)	131 (11.8)	0.527 (0.0661)
High CTL	2000	1082	8/14 – 8/18	2+	0.374 (0.0985)	41 (3.4)	0.695 (0.099)	0.450 (0.0484)	149 (12.6)	0.532 (0.0629)
High CTL	2001	1090	8/13 – 8/15	2+	–	37 (5.8)	0.644 (0.146)	–	129 (2.2)	0.844 (0.0397)
Mid TRT	1998	877	9/10 – 9/13	0	–	269 (10.2)	0.632 (0.0341)	–	181 (49.8)	0.309 (0.114)
Mid TRT	1999	877	9/10 – 9/13	0	–	215 (8.5)	0.637 (0.0350)	0.282 (0.0723)	71 (7.0)	0.581 (0.1012)
Mid TRT	2000	877	9/21 – 9/24	0	–	31 (2.4)	0.639 (0.0390)	0.355 (0.0477)	273 (15.4)	0.604 (0.0596)
Mid TRT	2001	877	9/18 – 9/21	0	–	74 (4.3)	0.629 (0.0367)	–	284 (124.6)	0.250 (0.136)
Mid TRT	1998	877	9/10 – 9/13	1	–	180 (5.2)	0.732 (0.0347)	0.274 (0.0495)	183 (18.2)	0.512 (0.0881)
Mid TRT	1999	877	9/10 – 9/13	1	–	112 (3.7)	0.736 (0.0348)	0.517 (0.0590)	164 (4.8)	0.759 (0.0483)
Mid TRT	2000	877	9/21 – 9/24	1	–	41 (2.0)	0.737 (0.0365)	0.471 (0.0711)	67 (9.1)	0.536 (0.1037)
Mid TRT	2001	877	9/18 – 9/21	1	–	28 (1.6)	0.729 (0.0380)	–	270 (22.9)	0.541 (0.0663)
Mid TRT	1998	877	9/10 – 9/13	2+	–	91 (1.7)	0.840 (0.0259)	0.359 (0.0465)	168 (3.9)	0.791 (0.0435)
Mid TRT	1999	877	9/10 – 9/13	2+	–	42 (1.1)	0.843 (0.0263)	0.356 (0.0484	159 (10.0)	0.618 (0.0572)
Mid TRT	2000	877	9/21 – 9/24	2+	–	56 (1.3)	0.844 (0.0271)	0.386 (0.0448)	168 (14.8)	0.483 (0.0535)
Mid TRT	2001	877	9/18 – 9/21	2+	–	59 (1.4)	0.839 (0.0266)	–	117 (3.1)	0.767 (0.0549)
High TRT	1998	950	9/17 – 9/20	0	–	107 (6.1)	0.613 (0.0427)	–	–	–
High TRT	1999	1002	8/10 – 8/13	0	–	30 (2.6)	0.622 (0.0438)	–	–	–
High TRT	2000	1200	8/8 – 8/11	0	–	–	–	–	–	–
High TRT	2001	1200	8/7 – 8/10	0	–	175 (8.8)	0.614 (0.0420)	–	–	–
High TRT	1998	950	9/17 – 9/20	1	–	14 (1.2)	0.725 (0.0486)	–	–	–
High TRT	1999	1002	8/10 – 8/13	1	–	23 (1.5)	0.732 (0.0480)	–	–	–
High TRT	2000	1200	8/8 – 8/11	1	–	38 (2.1)	0.732 (0.0485)	–	–	–
High TRT	2001	1200	8/7 – 8/10	1	–	14 (1.2)	0.725 (0.0489)	–	–	–
High TRT	1998	950	9/17 – 9/20	2+	–	240 (3.5)	0.821 (0.0219)	0.5678 (0.0888)	40 (0.17)	0.973 (0.0274)
High TRT	1999	1002	8/10 – 8/13	2+	–	92 (1.9)	0.827 (0.0222)	0.674 (0.1002)	29 (4.3)	0.534 (0.1042)
High TRT	2000	1200	8/8 – 8/11	2+	–	108 (2.0)	0.827 (0.0225)	0.466 (0.1008)	27 (1.4)	0.800 (0.0895)
High TRT	2001	1200	8/7 – 8/10	2+	–	117 (2.2)	0.822 (0.0224)	–	21 (0.8)	0.889 (0.0833)

   Notes:  Apparent survival estimates are for the annual interval beginning in the year indicated (i.e.,  is for 1998–1999 interval). A dash (–) indicates no estimate was possible or no trout were captured.

^† Estimates are poor because few fish of this age class were captured.

^‡ Values are total numbers captured because too few fish were captured to calculate an estimate.