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  2. Hypoxia in fish - Wikipedia

    en.wikipedia.org/wiki/Hypoxia_in_fish

    Endogenous glycogen is present in tissue as a long term energy storage molecule. It can be converted into glucose and subsequently used as the starting material in glycolysis. A key adaptation to long-term survival during hypoxia is the ability of an organism to store large amounts of glycogen.

  3. Hypoxia (environmental) - Wikipedia

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

    Global map of low and declining oxygen levels in the open ocean and coastal waters, 2009. [1] The map indicates coastal sites where anthropogenic nutrients have exacerbated or caused oxygen declines to <2 mg/L (<63 μmol/L) (red dots), as well as ocean oxygen minimum zones at 300 m (blue shaded regions).

  4. Eutrophication - Wikipedia

    en.wikipedia.org/wiki/Eutrophication

    Phosphorus is the limiting factor for plant growth in most freshwater ecosystems, [15] and because phosphate adheres tightly to soil particles and sinks in areas such as wetlands and lakes, [16] due to its prevalence nowadays more and more phosphorus is accumulating inside freshwater bodies.

  5. Algae scrubber - Wikipedia

    en.wikipedia.org/wiki/Algae_scrubber

    Periodic removal of the algae that has grown inside of an algae scrubber removes nutrients (ammonia, nitrate, phosphate) from the aquarium water, thus providing the needed filtration. An algae scrubber is a water filtering device which uses light to grow algae ; in this process, undesirable chemicals are removed from the water. [ 1 ]

  6. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    Many reef aquarium keepers use RO systems to make fish-friendly seawater. Ordinary tap water can contain excessive chlorine, chloramines, copper, nitrates, nitrites, phosphates, silicates, or other chemicals detrimental to marine organisms. Contaminants such as nitrogen and phosphates can lead to

  7. Alexandria Ocasio-Cortez announces bid to become top Democrat ...

    www.aol.com/aoc-run-top-democrat-oversight...

    Rep. Alexandria Ocasio-Cortez announced on Friday that she is jumping into the race to be the top Democrat on the influential House Oversight Committee.

  8. Olszewski tube - Wikipedia

    en.wikipedia.org/wiki/Olszewski_tube

    If the thermocline is disrupted, it could alter the ecology of the lake, potentially making it uninhabitable. Another complication is that the installation must be a long-term process. Short-term uses of Olszewski tubes have largely failed because it takes some time for the anoxic condition of the hypolimnetic layer to increase in dissolved oxygen.

  9. Freshwater aquarium algae - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium_algae

    It may be a symptom of low phosphate and carbon dioxide levels in the water. However, GSA is typically a sign of a healthy aquarium and is usually present in some capacity. [3] Green dust algae (GDA) is similar to GSA, however it adheres less aggressively and may be easily wiped off of the glass and substrate on which it settles.

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