| Date | Number
Captured (nj) |
Number Recaptured (mi) | Number
Marked prior to ith
sample (Mi) |
| 9/14/96 | 2 | 0 | 100b |
| 9/26/96 | 5 | 1 | 102 |
| 9/28/96 | 1 | 0 | 106 |
a Marked-recapture data from the 2 30-m stream reaches were combined.
b Estimated number of marked animals in population based on mark-recapture data from June-August 1996.
| Date | Number
Captured (nj) |
Number Recaptured (mi) | Number
Marked prior to ith
sample (Mi) |
| 9/14/96 | 13 | 2 | 17b |
| 9/26/96 | 4 | 2 | 28 |
| 9/28/96 | 6 | 3 | 30 |
a Marked-recapture data from the 2 30-m stream reaches were combined.
b Estimated number of marked animals in population based on mark-recapture data from June-August 1996.
| Date | Number
Captured (nj) |
Number Recaptured (mi) | Number
Marked prior to ith
sample (Mi) |
| 9/13/96 | 1 | 0 | 23b |
| 9/19/96 | 0 | 0 | 24 |
a Marked-recapture data from the 2 30-m stream reaches were combined.
b Estimated number of marked animals in population based on mark-recapture data from June-August 1996.
| Date | Number
Captured (nj) |
Number Recaptured (mi) | Number
Marked prior to ith
sample (Mi) |
| 9/13/96 | 8 | 1 | 13b |
| 9/19/96 | 8 | 1 | 20 |
a Marked-recapture data from the 2 30-m stream reaches were combined.
b Estimated number of marked animals in population based on mark-recapture data from June-August 1996.
Population estimate of adult tailed frogs in 60-m reach of Mountain Gulch (August 1996):
n1 = 57, n2 = 53, m = 10 , where m = recaptures.
N^ = 280 , SE = 72
95%CI on N^: 280 ± 2 (72) = 64 to 424 adult tailed frogs
Estimates were based on Bailey's 2-sample estimator:
Population estimate of adult tailed frogs in 60-m reach of Eldorado Gulch (August 1996):
n1 = 9, n2 = 26, m = 3, where m = recaptures.
N^ = 61 , SE = 25 (based on Bailey's estimator)
95%CI on N^: 61 ± 2 (25) = 11 to 111 adult tailed frogs
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Revised: 10 June 1998
