The phrase "frequently scarce" is correct and usable in written English.
It can be used to describe something that is often in short supply or not readily available.
Example: "In this region, fresh water is frequently scarce, especially during the dry season."
Alternatives: "often limited" or "commonly lacking".
However, these data are frequently scarce, incomplete, or unreliable.
Because conservation resources are frequently scarce, the prioritisation assessments used to allocate conservation efforts should be highly precise [23].
Furthermore, the information content of the available experimental data is frequently scarce.
This widely accepted interpretation emphasizes that, populations of foraging individuals that live in areas where, until recently, food has been relatively unpredictable or frequently scarce have much higher prevalence of thrifty genes [ 120].
3. The information content of the available experimental data is frequently scarce, which might cause an identifiability problem (i.e., different combinations of parameter values may produce similar model outputs).
Most mathematical models in systems biology present three characteristics which make this problem very difficult to solve: they are highly non-linear, they have a large number of parameters to be estimated, and the information content of the available experimental data is frequently scarce.
And we can learn from our forebears, who lived in worlds where water was often scarce, frequently hard to obtain, and treated with great respect.
This is because data on two frequently used indicators of wealth – household income and expenditure – are often scarce and unreliable [ 21].
Worldwide, delayed diagnosis is common and frequently very scarce improvement in five-year survival over the last four decades has been observed [ 4].
At the beginning of the colonial period, stamped metal foundry pieces frequently substituted for scarce currency.
Systematically archived long-period data over Chile, where EQs occur frequently, are very scarce due to the existence of the Pacific Ocean in the west and a limited number of observation sites in the east.
