The phrase "a scarce sample of" is correct and usable in written English.
It can be used when referring to a limited or rare example of something, often in research or analysis contexts.
Example: "The study was based on a scarce sample of participants, which may affect the reliability of the results."
Alternatives: "a limited sample of" or "a rare example of".
A scarce sampling of the Old World Pomadasys species prevents us to definitively point to a New World origin of the sub-familiy Hamulinae, however our data suggest that this is likely to be the case.
However, this could be solely due to very scarce sampling of our data set.
This finding is consistent with previous chloroplast phylogenomic studies with scarce sampling of trebouxiophyceans, wherein the freshwater flagellate Pedinomonas minor was found to be sister to the clade formed by members of the Chlorellales [ 42, 66].
Furthermore, the system allows chemical and simultaneous biochemical screening of scarce sample types only obtainable in very low volumes, such as precious natural extracts, animal venoms, cell, and tissue lysates.
Relatively few individuals of B. turriformis and B. carinatocosta are used in this study due to a scarce number of samples collected, which is reflective of the rarity of these species [ 60].
In fact, sample pooling has been used in a number of -omic studies because it is cost-efficient and suitable for scarce sample models [ 22, 23].
Moreover, simulations were exclusively based on substitutional patterns derived from functionally highly constrained ndhF and rbcL data sets with a scarce taxon sampling and a very rough estimation of phylogeny by neighbor-joining.
As with the fatty acids, greater proportions of the unoxidised or less oxidized species, abietic acid and DHA, were found in the liquid paint samples, consistent with a scarce supply of oxygen in the bulk samples in sealed historic cans.
In this paper, the design of an output predictor in a system with random scarce sampling is addressed.
In this way we provide a method for identifying Autonomous Systems with scarce information: a short sample of their nodes and their size.
