Table 4. Carbonate chemistry and physical seawater properties at three deployment locations (inshore at two sites in the Trondheimsfjord (Leksa on- and off-reef) and offshore at the Sula Reef).
Environmental seawater properties measured from samples taken directly at the coral cages deployment sites at the time of recovery in 2014. Water samples were collected by means of the NISKIN bottle of JAGO for measurements of total alkalinity (TA) and dissolved inorganic carbon (DIC) (in μmol per kg seawater). Physical seawater parameters (temperature (T) and salinity (Sal)) were measured with a CTD attached to JAGO (GEOMAR Helmholtz-Zentrum für Ozeanforschung, 2017). Remaining carbonate chemistry parameters (pCO2, bicarbonate (HCO3−), carbonate (CO32−), and the aragonite saturation (ΩAr)) were computed with CO2SYS.
| Location | Latitude | Longitude | Depth (m) | T (°C) |
Sal | DIC (μmol kg−1) |
TA (μmol kg−1) |
pHTS |
pCO2 (μatm) |
HCO3− (μmol kg−1) | CO32− (μmol kg−1) | ΩAr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nord-Leksa ‘on-reef’ | 63°36.486′N | 09°22.947′E | 180 | 7.7 | 35.1 | 2,157.0 | 2,306.7 | 7.994 | 453.5 | 2,022 | 113.6 | 1.7 |
| Nord-Leksa ‘off-reef’ | 63°36.535′N | 09°22.891′E | 219 | 7.7 | 35.4 | 2,136.3 | 2,310.0 | 8.052 | 390.7 | 1,990 | 127.8 | 1.9 |
| Sula Reef | 64°06.643′N | 08°07.060′E | 304 | 7.5 | 35.5 | 2,142.6 | 2,312.9 | 8.043 | 399.8 | 1,998 | 125.8 | 1.9 |