Table 1 Summary of the seawater physiochemical conditions during experiments with Hyas araneus

Temperature (°C)

5.3 ± 0.2

4.2 ± 0.2

4.5 ± 0.2

9.9 ± 0.2

9.7 ± 0.3

9.8 ± 0.2

Salinity (‰)

32.1 ± 0.7

32.2 ± 0.7

32.2 ± 0.6

33.6 ± 0.4

33.5 ± 0.4

33.6 ± 0.3

pH (NBS scale)

8.15 ± 0.03

7.81 ± 0.04

7.55 ± 0.06

8.22 ± 0.04

7.85 ± 0.04

7.54 ± 0.05

DIC (mmol kg⁻¹)

2,366 ± 42

2,436 ± 14

2,520 ± 39

2,295 ± 28

2,395 ± 14

2,488 ± 22

PCO₂ (μatm)

441 ± 35

991 ± 96

1,878 ± 246

366 ± 30

942 ± 59

2,015 ± 147

Total alkalinity (mmol kg⁻¹)

2,479 ± 13

2,479 ± 14

2,491 ± 14

2,484 ± 10

2,469 ± 13

2,473 ± 15