Table 2 Numbers of fish with signs of gas bubble trauma. Atlantic salmon (Salmo salar ssp. Bleke) originating from a landlocked population in the Otra river, were exposed to water from river Otra (Control, pH 6.5), or this water with gas supersaturation (GSS; TGP-110%), simulated environmental acidification (SEA; pH 5.5 + Al), and the combine (GSS + SEA; pH 5.5 + Al, TGP-110%), for six days. H₂SO₄ was used to acidify water to pH5.5; AlCl₃.6H₂O was diluted to obtain a nominal concentration of 67 µg [Al] l⁻¹ for SEA. The nominal total gas pressure (TGP) in GSS was 110% in the exposure tanks, while the TGP level was 100% in treatments with no GSS.

From: No additional stress of sublethal gas supersaturation in a landlocked population of Atlantic salmon (Salmo salar) exposed to environmental acidification