The reduction of oxygen is a concern as areas of severe depletion become effectively dead.
Yet people with average or even low-normal levels can have satisfactory sex lives; only severe depletion seems to remove both desire and activity.
Hake, tuna, and pilchard are key commercial species in the South Atlantic, despite severe depletion of the latter two stocks.
In sub-Saharan nations, where millions are infected with HIV – which causes severe depletion of patients' immune systems – infections with cryptococcus and pneumocystis fungi account for more than half a million deaths a year.
Finally, experiments with a chemotherapy drug called busulfan, known to selectively kill off sperm stem cells in men, likewise appeared to obliterate egg replacement in mice without killing existing eggs, leading to severe depletion of their egg stock over time.
Cholera, an acute infection of the small intestine caused by the bacterium Vibrio cholerae and characterized by extreme diarrhea with rapid and severe depletion of body fluids and salts.
Many patients with ectopic corticotropin production have the symptoms and signs of Cushing syndrome, as well as intense pigmentation, caused by hypersecretion of ACTH, and severe depletion of potassium (hypokalemia), caused by the mineralocorticoid action of high serum cortisol concentrations.
Severe depletion of foF2 and TEC was observed at all stations during the storm recovery period.
The O/N2 rate showed a distinct reduction on March 18 in the China zone, which may be mainly responsible for the severe depletion of foF2 and TEC.
In both courses of MD, a severe depletion of Peyer's patches was noted, but only in late onset MD, there was a complete loss of architecture.
A combination of mineralization and C export by erosion causes a severe depletion of the SOC pool on eroded compared with uneroded or slightly eroded soils.
