The phrase "fluctuating population" is correct and usable in written English.
It can be used to describe a population that is constantly changing in size or number. Example: The city's fluctuating population has caused challenges for urban planners, as it is difficult to predict the resources and infrastructure needed to support such a dynamic community.
The mussels first appeared in the Hudson a decade ago; their fluctuating population there is estimated at 500 billion to 600 billion in peak years.
In particular, they arise in mathematical description of a fluctuating population of organisms, in control systems, and in economic studies of business cycles [7 9].
Population censuses conducted in migrant-sending states can provide potentially more accurate estimations than immigration-by-origin data, but their infrequent collection makes it difficult to capture fluctuating population movements that are typical of transitional economies.
But life here has not always been so agreeable; when Knysna was established in the early 19th Century, the town was built on a fluctuating population of gold panners, mariners, settlers, colonials and fortune seekers.
It makes of them a transient and chronically fluctuating population with no readily discernable common enemy and no obvious place to coalesce.
Since effective population size is nearer to the lower values than the higher values in the cases of fluctuating population sizes [37], the viral load data are consistent with the genetic evidence of more efficient purifying selection in severe disease.
Research on krill has a long history, reaching back to the "Discovery" expeditions of the 1920/1930s that sought to understand the drivers of fluctuating populations of baleen whales which fed on krill and which were then harvested for their oil [8].
Anthropogenic disturbances may cause a decrease in population abundance either indirectly following a reduction in limiting factors, or directly by reducing N through density-independent losses (see 'Are fluctuating populations r-selected?').
Just as the effective size of fluctuating populations is represented by the harmonic mean over time, the mean evolutionary rate among lineages is expressed better by the harmonic mean.
Similar behavior is observed for the fixation probabilities of adaptive alleles in fluctuating populations.
It may be argued that fluctuating populations are more likely to be r-selected than more stable populations that are constantly at, or near their carrying capacity.
