"population constriction" is correct and usable in written English.
You can use it when referring to a decrease in the size of a population. For example, "The population constriction in the past decade was the result of environmental disasters."
Results from Fu's F and Tajima's D tests, analyses of mismatch distributions, and comparison of h and π values all suggest rapid expansion after a population bottleneck, with populations in clade A from Africa, Madagascar, the Palaearctic, and the Philippines resulting from a more severe population constriction than populations in grade B from Sundaland, Wallacea, and Australia.
The majority of individuals are descended from expansion events after one or more population bottlenecks, though some populations harbor ancestral polymorphism predating these population constrictions.
We tested for recent population constrictions using Bottleneck 2.2 [ 33]. Isolation by distance tests were performed where possible using IBD v 1.52 [ 34].
As the urban population grew, the constriction caused by walls and fortifications led to overcrowding, the blocking out of air and light, and very poor sanitation.
Acquisition of foreign DNA, IS expansion, pseudogene accumulation and genome reduction are features in common with bacterial populations that have passed through an evolutionary bottleneck [ 7- 12], suggesting there has been constriction of population size during adaptation to a new, niche environment.
The little bustard (Tetrax tetrax) is one of such threatened steppe-land bird species, which has suffered recent dramatic range constrictions and population declines.
It was the intoxicating mix of amazing weather plus the naively innocent attitude of the West Coast population who lacked the stuffy class constriction of the British.
Genetic bottlenecks can cause a constriction of the genetic variability within a population.
Airway hyperresponsiveness (AHR) is an exaggerated smooth muscle constriction observed in certain individuals among a population, which can occur in response to a variety of stimuli such as histamine, exercise, cold air, and methacholine (MCh).
Interestingly, in two individuals of population 2602 only one of the two homologues of chromosome Adu carried secondary constrictions.
This leads to the question of the population dynamics of structural heterozygosity: if a heterozygous configuration leads to genetic map constrictions, and if it does not hamper reproduction, a fraction of the progeny that is again heterozygous should display the same genetic constriction.
