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| Syllabus |
Assignments |
Experiments |
Lab
Photos |
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Primary
Productivity Experiment
2002
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| Heron Creek (Hopewell, James River) 10/22/02 |
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| Joe |
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% Sat 16.42 |
| Depth m |
Initial DO ppm |
Light ppm |
Dark ppm |
Gross Prod ppm |
Net Prod ppm |
Resp ppm |
mg C fix/L |
initial |
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c7-d7 |
c7-b7 |
b7-d7 |
F6*0.698*0.536 |
| 0.4 |
6.8 |
10.4 |
6.4 |
2.2 |
-1.2 |
3.4 |
-0.44895 |
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| 1 |
10 |
8.8 |
6.6 |
0 |
-0.8 |
0.8 |
-0.2993 |
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| 8 |
9.2 |
8.4 |
8.4 |
0 |
0 |
0 |
0 |
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| Michelle |
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% Sat 16.42 |
| Depth m |
Initial DO ppm |
Light ppm |
Dark ppm |
Gross Prod ppm |
Net Prod ppm |
Resp ppm |
mg C fix/L |
initial |
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c13-d13 |
c13-b13 |
b13-d13 |
F12*0.698*0.536 |
| 0.4 |
3.2 |
1.6 |
2.8 |
-1.2 |
-1.6 |
0.4 |
-0.5986 |
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| 1 |
5.2 |
1.4 |
2 |
-0.6 |
-3.8 |
3.2 |
-1.42169 |
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| 8 |
2.6 |
2.6 |
1.4 |
1.2 |
0 |
1.2 |
0 |
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| Turk |
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% Sat 16.42 |
| Depth m |
Initial DO ppm |
Light ppm |
Dark ppm |
Gross Prod ppm |
Net Prod ppm |
Resp ppm |
mg C fix/L |
per year |
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c20-d20 |
c20-b20 |
b20-d20 |
F20*0.698*0.536 |
| 0.4 |
5.3 |
9.2 |
6.8 |
2.4 |
3.9 |
-1.5 |
1.459099 |
532.5712 |
| 1 |
5.9 |
9 |
9.2 |
-0.2 |
3.1 |
-3.3 |
1.159797 |
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| 8 |
7.9 |
9.2 |
6.8 |
2.4 |
1.3 |
1.1 |
0.486366 |
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| Chris |
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% Sat 16.42 |
| Depth m |
Initial DO ppm |
Light ppm |
Dark ppm |
Gross Prod ppm |
Net Prod ppm |
Resp ppm |
mg C fix/L |
initial |
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C26-D26 |
C26-B26 |
B26-D26 |
F26*0.698*0.536 |
| 0.4 |
3.25 |
3.3 |
3.25 |
0.05 |
0.05 |
0 |
0.018706 |
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| 1 |
3 |
3.2 |
3.2 |
0 |
0.2 |
-0.2 |
0.074826 |
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| 8 |
2.95 |
3.3 |
3.1 |
0.2 |
0.35 |
-0.15 |
0.130945 |
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| Sarah S |
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% Sat 16.42 |
| Depth m |
Initial DO ppm |
Light ppm |
Dark ppm |
Gross Prod ppm |
Net Prod ppm |
Resp ppm |
mg C fix/L |
initial |
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C26-D26 |
C26-B26 |
B26-D26 |
F26*0.698*0.536 |
| 0.4 |
10 |
9.2 |
10.3 |
-1.1 |
-0.8 |
-0.3 |
-0.2993 |
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| 1 |
5.4 |
8.5 |
7.4 |
1.1 |
3.1 |
-2 |
1.159797 |
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| 8 |
1.5 |
9 |
7.9 |
1.1 |
7.5 |
-6.4 |
2.80596 |
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| Danny |
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% Sat 16.42 |
| Depth m |
Initial DO ppm |
Light ppm |
Dark ppm |
Gross Prod ppm |
Net Prod ppm |
Resp ppm |
mg C fix/L |
initial |
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C26-D26 |
C26-B26 |
B26-D26 |
F26*0.698*0.536 |
| 0.4 |
9.2 |
9.2 |
5.8 |
3.4 |
0 |
3.4 |
0 |
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| 1 |
8 |
8.5 |
5.9 |
2.6 |
0.5 |
2.1 |
0.187064 |
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| 8 |
7.4 |
9 |
5.85 |
3.15 |
1.6 |
1.55 |
0.598605 |
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| Rebecca |
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% Sat 16.42 |
| Depth m |
Initial DO ppm |
Light ppm |
Dark ppm |
Gross Prod ppm |
Net Prod ppm |
Resp ppm |
mg C fix/L |
initial |
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C26-D26 |
C26-B26 |
B26-D26 |
F26*0.698*0.536 |
| 0.4 |
10 |
9.2 |
5.2 |
4 |
-0.8 |
4.8 |
-0.2993 |
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| 1 |
7.8 |
9.8 |
6.2 |
3.6 |
2 |
1.6 |
0.748256 |
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| 8 |
9.2 |
10 |
6 |
4 |
0.8 |
3.2 |
0.299302 |
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| Above
is one possible graph. Other possibilities are a
comparison of gross productivity to respiration, gross
productivity to net productivity, and the true measure of
primary productivity, the amount of carbon fixed per liter per
year. I would not recommend using class averages. I
would compare your data to Turk's this year or just use your
data.
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