Read pages 32-40 in your text before your lab period.
Below is a table of data collected in previous labs. Can you explain why
these results were obtained? Do any of these results conflict with your expected
results?
|
|
October 26,
1998
|
October 26,
1998
|
November 3,
1998
|
November 3,
1998
|
February 24,
1999
|
February 24,
1999
|
April 14,
1998
|
April 14,
1998
|
Sept. 28,
2004
Morning Lab
|
Sept. 28,
2004
Morning Lab
|
Sept. 28,
2004
Afternoon Lab
|
Sept. 28,
2004
Afternoon Lab
|
|
|
NE Bottom
|
SW Top
|
NE Bottom
|
SW Top
|
NE Bottom
|
SW Top
|
NE Bottom
|
SW Top
|
NE Bottom
|
SW Top
|
NE Bottom
|
SW Top
|
| Air Teperature (1m high) |
69°F
|
72°F
|
69°F
|
64°F
|
56°F
|
59°F
|
76°F, 78°F
|
81°F, 81°F
|
72°F | 87°F | 80°F | 90°F |
| Air Temerature (leaf litter) |
68°F
|
74°F
|
62°F
|
65°F
|
49°F
|
54°F
|
76°F, 77°F
|
84°F, 84°F
|
76°F | 82°F | 80°F | 90°F |
| Soil Temperature |
59°F
|
64°F
|
59°F
|
60°F
|
48°F
|
50°F
|
62°F, 64°F
|
70°F, 75°F
|
68°F | 72°F | 71°F | 75°F |
| Humidity |
68%
|
44%
|
68%
|
67%
|
45%
|
35%
|
79%, 87%
|
72%
|
83% | 79% | 76% | 60% |
| Wind Speed & Direction |
0
|
0
|
0
|
.15SE
|
0
|
1.5WNW
|
none, 2SW
|
2.5SW, 2SW
|
0 | 1.1 mph--SW | 0 | 1.7 mph-N |
| Light intensity |
3ft candles
|
25ft. candles
|
3ft candles
|
200 ft candles
|
18 ft candles
|
340 ft candles
|
8, 11
|
114, 132
|
47 ft. candles | 370 ft. candles | 55,8 ft. candles | 668 ft. candles |
| Percent saturationof soil |
59%
|
0%
|
57%
|
0%
|
57%
|
5%
|
48.75%, 53.8%
|
3.8%, 3.2%
|
61% | 0% | 71% | 0% |
| Infiltration rate of soil |
2 min, 57 sec
|
4 min, 28 sec
|
2 min, 57 sec
|
7 min, 9 sec
|
10 min, 0 sec
|
5 min, 15 sec
|
2 min, 42 sec,
1 min, 1 sec |
3 min, 30 sec,
2 min, 29 sec |
51 sec | 4 min 6 sec | 2 min 46 sec | 1 min 2 sec |
| pH of soil |
5.2
|
6.5
|
5.2
|
6.5
|
5.8
|
6.9
|
6.3, 5.8
|
6.8
|
6.5 | 6.5 | 7 | 7 |
| Slope |
44
|
3
|
48 NNE
|
5 WSW
|
45
|
2 SW
|
32N
|
9SW
|
40 NNE | 4 SSE | 60 NE | 16 SW |
| Depth of leaf litter |
3/4 inch
|
1 inch
|
3/4 inch
|
0.2" (1/6-1/4 inch)
|
2 1/2 inch
|
1/4 inch
|
2 1/4 inches | 1 1/2 inches | .75 inch | .1 inch | ||
|
Depth of humus
|
1/8 inch
|
2 inch
|
1/8 inch
|
0.3" (1/3 inch)
|
1/2 inch
|
1/4 inch
|
|
|
1/4 inch | 1/4 inch | .25 inch | trace |
| Vegetation |
Predominately hardwoods, ferns and mosses |
Mainly pine grasses, legumes, and small trees |
Mostly hardwoods. ferns, and Florida anise | Pines, grasses, legumes | Hardwoods | Mostly pines |