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Table 1

Present-day ranges for temperature, dissolved oxygen, pH, and seafloor POC flux at abyssal and bathyal depthsa. DOI: https://doi.org/10.1525/elementa.203.t1

Ocean basinDepth zoneaTemperature (°C)Dissolved oxygen (mL L–1)pHSeafloor POC flux (mg C m–2 d1)

 
Atlantic > 3 km –0.07 to 4.39 4.6 to 6.92 7.98 to 8.11 0.69 to 10.41 
0.2–3 km –1.23 to 27.83 1.48 to 7.54 7.71 to 8.25 1.4 to 108.05 
Pacific > 3 km 0.7 to 3.84 2.01 to 4.9 7.72 to 8 0.56 to 10.68 
0.2–3 km –0.23 to 28.39 0.24 to 7.31 7.58 to 8.2 0.66 to 81.86 
Indian > 3 km 0.01 to 2.47 2.48 to 5.4 7.9 to 8.03 0.91 to 6.71 
0.2–3 km 0.28 to 25.22 0.1 to 7.16 7.7 to 8.12 1.4 to 61.91 
Southern > 3 km –0.62 to 1.62 4.15 to 6.07 7.94 to 8.03 0.16 to 2.67 
0.2–3 km –2.03 to 8.52 3.66 to 7.81 7.9 to 8.16 0.21 to 51.67 
Arctic > 3 km –1.05 to –0.25 5.79 to 7.18 NAb 0.26 to 4.34 
0.2–3 km –1.77 to 7.87 2.67 to 8.13 NA 0.3 to 75.57 
Ocean basinDepth zoneaTemperature (°C)Dissolved oxygen (mL L–1)pHSeafloor POC flux (mg C m–2 d1)

 
Atlantic > 3 km –0.07 to 4.39 4.6 to 6.92 7.98 to 8.11 0.69 to 10.41 
0.2–3 km –1.23 to 27.83 1.48 to 7.54 7.71 to 8.25 1.4 to 108.05 
Pacific > 3 km 0.7 to 3.84 2.01 to 4.9 7.72 to 8 0.56 to 10.68 
0.2–3 km –0.23 to 28.39 0.24 to 7.31 7.58 to 8.2 0.66 to 81.86 
Indian > 3 km 0.01 to 2.47 2.48 to 5.4 7.9 to 8.03 0.91 to 6.71 
0.2–3 km 0.28 to 25.22 0.1 to 7.16 7.7 to 8.12 1.4 to 61.91 
Southern > 3 km –0.62 to 1.62 4.15 to 6.07 7.94 to 8.03 0.16 to 2.67 
0.2–3 km –2.03 to 8.52 3.66 to 7.81 7.9 to 8.16 0.21 to 51.67 
Arctic > 3 km –1.05 to –0.25 5.79 to 7.18 NAb 0.26 to 4.34 
0.2–3 km –1.77 to 7.87 2.67 to 8.13 NA 0.3 to 75.57 

aAbyssal depths are > 3 km; bathyal depths are 0.2–3 km.

bData not available.

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