Ogisijeni ya molekile ishongeshejwe mu mazi yitwa ogisijeni ishongeshejwe kandi akenshi yitwa D0. Ingano ya ogisijeni ishongeshejwe mu mazi yo hejuru ni 5-10mg/L. Iyo hari umuyaga mwinshi n'imiraba, ogisijeni ishongeshejwe mu mazi ishobora kugera kuri 14mg/L. Ogisijeni ishongeshejwe = agaciro gapimiwe ka ogisijeni ishongeshejwe/ogisijeni ishongeshejwe mu bihe bipimiwe * 100%, ni ukuvuga 90% no hejuru yayo, agaciro gapimiwe kari hejuru ya 7.5 mg/L, kandi nibura ni 2 mg/L.
Ogisijeni nkeyaamaziizanyura mu bimera ikavana ogisijeni mu mizi. Mu buryo nk'ubwo, izagabanya ogisijeni mu butaka. Ibimera bizima n'ibimera byiza mu butaka bikenera ogisijeni muri ibi bice bibiri.
Kubura umwuka wa ogisijeni mu mazi nabyo bishobora guteza izindi ngorane. Urugero, udusimba twitwa nematode dukunda ubutaka budafite umwuka mwinshi. Kuhira ibimera amazi make ya ogisijeni bizabigeza hafi y’ubuso kandi byoroshye kwangiza imizi y’ibimera.
Ubushakashatsi bwagaragaje ko kugabanya ubwinshi bwa ogisijeni yashongeshejwe mu mizi y'ibimera bizagabanya ubushobozi bw'ibimera bwo kwinjiza azote n'amazi. Kubura ogisijeni bishobora kwangiza imizi. Mu gihe cyo kumenyera ubwinshi buke bwa ogisijeni yashongeshejwe, imikorere y'ibimera yarahindutse. Hypoxia imbere mu bimera yitwa hypoxia y'imbere. Imwe mu ngaruka ni ukwangirika kwa sucrose, maze ibimera bigakoresha uburyo bwo kuzigama ingufu kugira ngo byishyure ibura rya ogisijeni.
Uburyo bwo gukora fotositesi ya phytoplankton ni bwo soko nyamukuru ya ogisijeni mu byuzi, muri rusange ikaba ingana na 56%-80% by'isoko ya ogisijeni; ibisigaye bituruka ku muyaga uhuha n'imiraba, bityo ogisijeni iri mu kirere igashonga mu buryo butaziguye muamaziIfite akamaro ka 12-14mg/L
Heilongjiang: kare-600-igipimoIkidendezi cyo gutwika uruhu gishobora kongera ubushyuhe bw'amazi ho dogere 3 kugeza kuri 4 no kongera umusaruro w'ibinyampeke ho 6%.