TABLE 2.
Specific affinities for bacterioplankton in Gulf of Alaska coastal water
| Date (1998) | Substratea | Biomass (μg/liter) | Affinity (liters g of cells−1 h−1) |
|---|---|---|---|
| 3 May | Leucine | 400 | 6.0 (110b) |
| 22 July | Leucine | 340 | 400 |
| 10 August | Leucine | 270 | 50-140c |
| 27 August | Amino acid mix | 74 | 48 |
| 19 October | Leucine | 140 | 30 |
| 13 December | Amino acid mix | 27 | 4.3 |
| 13 December | Glucose | 27 | 0.9 |
| 14 December | Glutamate | 25 | 4.4 |
| 14 December | Leucine | 25 | 7.4 |
a
Until 19 October, substrates were at trace levels. On 13 December and thereafter, levels were at 1 μg/liter and below. All substrates were radiolabeled.
b
Affinity after the temperature was raised from 6 to 15°C over 2 h.
c
Range over 24 h.