WLF 448: Fish & Wildlife Population Ecology
Field Exercise #1, Fall 1996

Summary of Capture Data: Eldorado Gulch (9/19/96)

Air temp - ?C
Water temp - 8C

Data pooled for two 30 meter reaches

Average width for 60 m reach = 1.33 m
Average midstream depth = 9.8 cm

Tailed Frogs - no adults captured

Tailed Frogs - tadpoles

# Length (mm) # Length (mm)
1 54 16 45
2 53 17 45
3 53 18 45
4 52 19 44
5 50 20 43
6 50 21 43
7 50 22 43
8 49 23 40
9 48 24 40
10 47 25 40
11 47 26 40
12 47 27 40
13 47 28 40
14 46 29 40
15 45 30 40

Idaho Giant Salamanders - 60-meter reach

Number (recap) Stage Total length (mm) Snout-vent length (mm) Weight (g)
1 L 190 110 46
2 L 165 95 35
3 L 105 65 12
4 (R) L 110 67 12
5 L 100 65 12
6 L 90 55 9
7 L 45 20 4
8 L 36 15 1

First 5-meter reach

mean width of 2.0 m
mean midstream depth = 9 cm

Tailed Frogs - no adults captured

Tailed Frogs - tadpoles

# Length (mm) # Length (mm)
1 47 31 36
2 46 32 36
3 45 33 36
4 45 34 35
5 43 35 35
6 43 36 35
7 42 37 35
8 40 38 35
9 40 39 35
10 40 40 34
11 40 41 34
12 40 42 32
13 40 43 30
14 40 44 .
15 40 45 .
16 40 46 .
17 39 47 .
18 39 48 .
19 38 49 .
20 38 50 .
21 38 51 .
22 37 52 .
23 37 53 .
24 37 54 .
25 37 55 .
26 37 56 .
27 37 57 .
28 37 58 .
29 37 59 .
30 36 60 .

(No D.aterrimus captured in first 5-meter sample)

2nd 5-m reach

1.6 meters wide

Tailed Frogs - no adults captured

Tailed Frogs - tadpoles

# Length (mm)
1 41
2 39
3 38
4 38
5 37
6 37
7 37
8 37
9 36
10 36
11 36
12 35
13 35
14 34
15 34
16 34
17 33
18 32
19 32
20 32
21 31
22 31

Idaho Giant Salamanders Second 5-meter reach

Number(recap) Stage Total length (mm) Snout-vent length (mm) Weight (g)
1 L 130 80 ---

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Revised: 10 June 1998