The phrase "scarce occurrence" is correct and usable in written English.
It can be used to describe an event or situation that happens infrequently or is rare.
Example: "The sighting of the rare bird was a scarce occurrence in the region, drawing birdwatchers from far and wide."
Alternatives: "rare event" or "infrequent happening."
We propose a modelling framework to identify and rank multiscale environmental predictors of transboundary distribution of invasive species based on scarce occurrence data (a common limitation in biodiversity modelling studies; Lomba et al. 2010; Vicente et al. 2011).
By identifying the potential distribution and its main determinant factors for a given invader, even based on scarce occurrence data, the framework presented here provides the foundation for prioritizing the early management of invasions over large regions.
The biggest difference was seen for broad-leaf trees (birch, alder, hazel) with a scarce occurrence in the Mediterranean countries.
The exclusive occurrence of immunoreactivity in mesencephalic neurons presenting Lewy bodies, its absence in the skin of control subjects, and scarce occurrence in patients with AP confirms that the well-defined, red nodular structures correspond to α-synuclein insoluble aggregates.
Despite their usefulness, a recurrent difficulty in applying SDMs is the likelihood of model overfitting due to a high ratio between the number of environmental predictors and the often-scarce species occurrence data (Guisan and Thuiller 2005).
The SNP panel was generated by selecting bi-allelic polymorphisms with a uniform distribution along the 12 chromosomes, but avoiding centromere regions where gene occurrence is scarce.
However, information on the effect of physical therapy on exacerbation occurrence is scarce.
There are scarce data assessing the occurrence of tidal recruitment (TR) and the gas distribution throughout the lung parenchyma by thoracic CT scan before and after maximal recruitment.
Although there is compelling evidence for a relatively high number of trans-splicing events in mammals, flies, and nematodes [ 27, 75], there is scarce information on the occurrence of fused transcripts of such origin in plants.
Our literature search uncovered a pronounced discrepancy between the quantity and intensity of the bioethical and regulatory debate on IFs, and the scarce evidence for the occurrence of IFs at a reportable scale.
However, only very scarce data exists on the occurrence of mycotoxin contamination of animal feeds and AFM1 in milk on rural and intensive small-scale dairy farms.
