Table 2.
Comparison of respiration rates (μmol O2 cm− 3 sponge day− 1) of four different sponge specimens in different physiological states, measured in closed chambers as well as calculated from diffusive oxygen profiles over the surface
| No pumping | Pumping | |||||
|---|---|---|---|---|---|---|
| From chamber—total sponge | From surface profiles—total sponge | From surface profiles—oxic layer | From chamber—constant pumping | From chamber—start pumping | From stationary tissue electrode—stop pumping | |
| Sponge 1 | 7.88 ± 1.5 n = 2 |
11.91 | 48.54 | 30.69 | 36.74 ± 1.1 n = 2 |
14.87 |
| Sponge 2 | 29.7 ± 0.3 n = 2 |
|||||
| Sponge 3 | 12.56 | 50.79 | 22.98 | |||
| Sponge 4 | 6.46 | |||||
Average values are given for repeated measurements. Empty fields = no data available