Timeline for Which fish will have more developed gills?
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Sep 2, 2013 at 15:26 | history | suggested | biogirl | CC BY-SA 3.0 |
corrected spelling
|
| Sep 2, 2013 at 15:25 | review | Suggested edits | |||
| S Sep 2, 2013 at 15:26 | |||||
| Sep 2, 2013 at 15:23 | vote | accept | biogirl | ||
| Sep 2, 2013 at 9:11 | comment | added | Miguel Ángel Naranjo Ortiz | Solubility may increase due to pressure, but it will remain pretty low no matter what. Without an internal production, and with so many organisms consuming it (below a certain point there is no photosynthesis, but there is still sediments to metabolize and there are animals and bacteria feeding by the leftovers that falls from the surface), the oxygen levels in the bottom of the ocean is minimal. | |
| Sep 1, 2013 at 22:32 | comment | added | terdon | You make a good point but the solubility of Oxygen increases with depth since it depends on the pressure. I have no idea if this increase will continue or if it reaches a plateau after a few meters. I agree that at great depths, the lack of photosynthesis should mean that the oxygen content is lower, but I wonder how much that is balanced out by the greater solubility. I haven't been able to find a reliable reference citing oxygen levels at greater depths. I would guess the concentration goes up for the first ~10-15 meters and then falls from there. | |
| Sep 1, 2013 at 20:43 | comment | added | Miguel Ángel Naranjo Ortiz | Yes, but that is because there's a biotic oxygen consumption (and production) that is higher in the most illuminated area. Once you have descend a bit beyond, the oxygen source is both photsynthesis and diffusion from air, both of wich may be hundreds of meters above. In this dark area, oxygen diffusion is limited, and carbon dioxyde accumulates too. | |
| Sep 1, 2013 at 20:40 | history | edited | Miguel Ángel Naranjo Ortiz | CC BY-SA 3.0 |
added 1 characters in body
|
| Sep 1, 2013 at 17:52 | comment | added | terdon | Does Oxygen concentration decrease with depth? The opposite is true for the first few meters. | |
| Sep 1, 2013 at 16:55 | history | answered | Miguel Ángel Naranjo Ortiz | CC BY-SA 3.0 |