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  2. Oxygen saturation - Wikipedia

    en.wikipedia.org/wiki/Oxygen_saturation

    Dissolved oxygen levels required by various species in the Chesapeake Bay (US). In aquatic environments, oxygen saturation is a ratio of the concentration of "dissolved oxygen" (DO, O 2), to the maximum amount of oxygen that will dissolve in that water body, at the temperature and pressure which constitute stable equilibrium conditions.

  3. Water table - Wikipedia

    en.wikipedia.org/wiki/Water_table

    The water table is the upper surface of the zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with groundwater , [ 1 ] which may be fresh, saline, or brackish, depending on the locality.

  4. Oxygen minimum zone - Wikipedia

    en.wikipedia.org/wiki/Oxygen_minimum_zone

    The oxygen minimum zone (OMZ), sometimes referred to as the shadow zone, is the zone in which oxygen saturation in seawater in the ocean is at its lowest. This zone occurs at depths of about 200 to 1,500 m (700–4,900 ft), depending on local circumstances.

  5. Hypoxia (environmental) - Wikipedia

    en.wikipedia.org/wiki/Hypoxia_(environmental)

    An aquatic system lacking dissolved oxygen (0% saturation) is termed anaerobic, reducing, or anoxic. In water, oxygen levels are approximately 7 ppm or 0.0007% in good quality water, but fluctuate. [5] Many organisms require hypoxic conditions. Oxygen is poisonous to anaerobic bacteria for example. [3]

  6. Oxygenation - Wikipedia

    en.wikipedia.org/wiki/Oxygenation

    Oxygen saturation (medicine), The percent of hemoglobin saturated by oxygen, usually in arterial blood. Water oxygenation, the process of increasing the oxygen saturation of the water; Dioxygen complex, the chemical details of how metals bind oxygen; Great Oxygenation Event, an ancient event that led to the rise of oxygen within our atmosphere

  7. Apparent oxygen utilisation - Wikipedia

    en.wikipedia.org/wiki/Apparent_oxygen_utilisation

    In deep water systems (e.g. oceans), water can be out of contact with the atmosphere for extremely long periods of time (years, decades, centuries) and large positive AOU values are typical. On occasion, where near-surface primary production has raised oxygen concentrations above saturation, negative AOU values are possible (i.e. oxygen has not ...

  8. Water aeration - Wikipedia

    en.wikipedia.org/wiki/Water_aeration

    Water aeration is the process of increasing or maintaining the oxygen saturation of water in both natural and artificial environments. Aeration techniques are commonly used in pond, lake, and reservoir management to address low oxygen levels or algal blooms.

  9. Capillary fringe - Wikipedia

    en.wikipedia.org/wiki/Capillary_fringe

    Cross-section of a hillslope depicting the vadose zone, capillary fringe, water table, and saturated zone. The capillary fringe is the subsurface layer in which groundwater seeps up from a water table by capillary action to fill pores. Pores at the base of the capillary fringe are filled with water due to tension saturation.

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