Table 1.
Effect size (%) of ecophysiological parameters relative to controls (LN; ~ 0.6 μM NO3, no warming). Bold values indicate significant differences to controls (LN) and values in brackets indicate effect size relative to low nitrate-treated colonies exposed to warming (LN + W). Pgross = gross photosynthesis, R = respiration, C:N = carbon to nitrogen ratio, %N/C = percent nitrogen/carbon of tissue dry weight.
| Warming | NO3 (μM) | Pulsation rate | Pgross | R | Symbiont density | Chl a content | Colour score | C:N | % N | % C | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red | Green | Blue | ||||||||||
|
- (Day 15–17 ) |
6 | + 3 | −11 | + 16 | −17 | + 75 | 0 | 0 | 0 | −10 | + 6 | −12 |
| 37 | −34 | −56 | + 19 | −10 | + 168 | −4 | + 16 | + 29 | −28 | + 23 | −18 | |
|
+ 5 °C (Day 37) |
0.6 | −45 | + 15 | + 35 | −12 | + 29 | 0 | 0 | 0 | −9 | + 18 | + 8 |
| 6 |
−100 (−100) |
−30 (−40) |
−4 (−29) |
−11 (+ 1) |
+ 59 (+ 23) |
−1 (−1) |
+ 2 (+ 2) |
+ 4 (+ 4) |
−16 (−8) |
+ 22 (+ 3) |
+ 2 (−6) |
|
| 37 |
−100 (−100) |
0 (−14) |
−3 (−28) |
+ 36 (+ 54) |
+ 81 (+ 40) |
−6 (−6) |
+ 25 (+ 25) |
+ 44 (+ 44) |
−30 (−24) |
+ 58 (+ 34) |
+ 10 (+ 2) |
|