| Example: |
|
|
|
|
|
|
|
|
|
|
|
| • | Plant ten seeds (0.1 g) grow to ten plants in large |
|||||||||
| sealed container, dry and weigh: 100.1 g; |
||||||||||
| • | 10 mg C consumed during day; 3 mg given up at |
|||||||||
| night. |
||||||||||
| • | Determine NPP and NPE. |
|||||||||
| • | NPP = 100.1 -
0.1 = 100 g |
|||||||||
| • | Daily NPP = GPP - C consumed |
|||||||||
| • |
= 13 mg - 3 mg = 10 mg |
|||||||||
| • | NPE = 10 mg/13 mg = 0.77 or 77% |
|||||||||