The phrase "a decrease in quantity of" is correct and usable in written English.
It can be used when discussing a reduction in the amount or number of something, often in contexts like economics, statistics, or inventory management.
Example: "The report indicated a decrease in quantity of available resources, which may impact production levels."
Alternatives: "a reduction in amount of" or "a decline in number of".
This erosion of genetic diversity was paralleled by the accumulation of mutations leading to a decrease in quantity and viability of pollen and seeds, as well as a reduction in the number of flowers per individual and an increase in phenotypically discernible mutants.
A study published in Organizational Behavior and Human Decision Processes found that upper-level managers who used their phones after 9 p.m. experienced a decrease in quantity as well as quality of sleep.
The specific deficit in photoreceptors was hypothesized to involve either a decrease in the quantity of photoreceptor pigment or misalignment of photoreceptors as implied by the observed ERP [2], either of which may account for the foveal granularity most specific to the disease.
Shale oil has gonadotropic activity and causes changes in the sexual cycle as well as diminution of the number of primordial folicles in the ovaries or a decrease in the quantity of normal spermatogonia in testicular germinal epithelium.
A shifting of the curve to the left corresponds to a decrease in the quantity of product supplied, whereas a shift to the right reflects an increase.
While this implies a decrease in the quantity of carbohydrate sources, global reports suggest a worsening in the quality of carbohydrate sources in the diet, especially from staple foods, with a shift in intake from coarse whole grains or tubers to highly refined carbohydrates and added sugars [ 8– 10, 86, 87, 25].
These involutional changes include alteration in the structure and organization of the elastic and collagenous fibers (Kahane 1987; Sato and Hirano 1997; Hirano et al 2000; Sato et al 2002; Madruga de Melo et al 2003), reduction in the ability to synthesize these fibrous proteins (Sato et al 2004), alterations in composition and decrease in quantity of ground substance (Thibeault et al 2002).
Results show that there are no differences in SOC between soil types in the surface 0 30 cm, except a decrease in the quantity of microaggregates within macroaggregates in Haplic Stagnosols.
