Table 2 Water physiochemical parameters of acclimatory pH 6.50 (2.7 kPa \({\text{P}}_{{{\text{CO}}_{2} }}\)) and pH 5.50 (24.6 kPa \({\text{P}}_{{{\text{CO}}_{2} }}\)) tanks over the 14-day acclimatory periods as well as water samples obtained during animal collection at the vent site (N = 8).

From: Specialized adaptations allow vent-endemic crabs (Xenograpsus testudinatus) to thrive under extreme environmental hypercapnia

Environment

pH

Temperature (°C)

Total alkalinity (µmol kg−1 l−1)

CT (µmol l−1)

\({\text{P}}_{{{\text{CO}}_{2} }}\) (kPa)

[HCO3] (µmol l−1)

TAMM (µmol l−1)

Control

6.489 ± 0.004

30.15 ± 0.07

2361 ± 42

3020 ± 48

2.765 ± 0.056

2331 ± 40

N/a

High \({\text{P}}_{{{\text{CO}}_{2} }}\)

5.549 ± 0.006

30.62 ± 0.05

2373 ± 25

8379 ± 53

24.581 ± 0.187

2374 ± 25

N/a

Vent site

6.40 ± 0.02

N/a

2475 ± 45

3365 ± 59

3.624 ± 0.135

2462 ± 44

 ≤ 5

  1. Acclimatory tank conditions were monitored every 1–2 days throughout experimentation. Data presented as means ± S.E.M; ‘N/a’ represents unmeasured parameters.