Sentence examples for demographic contraction from inspiring English sources
Next will come China, where the force of rapid urbanisation will eventually be overwhelmed by the greater power of demographic contraction.
Because of their unwillingness to adopt the shrewd political tactic of mixed marriages that Campanella had suggested in the Monarchia di Spagna, an allarming demographic contraction has occured due to the loss of soldiers in war and the infertility of women, so that the Spanish population, formerly numbering eight million, has now been reduced to half that figure.
In particular, a significant positive D may result from balancing selection but also from a demographic contraction, while a negative D value may be caused by purifying selection against deleterious alleles or by a demographic expansion.
In populations of small size like Amerindians and Oceanians, a positive D value may be interpreted either by a demographic contraction, and/or by balancing selection, and it is not possible to disentangle the effects caused by both alternatives.
Three populations showed significant (P < 0.05) heterozygosity excess under all the two models as an indication of recent demographic contraction.
It is possible that M. simplex populations underwent a demographic contraction during LGM and then expanded thereafter, with the contraction not being clearly evident in the BSP.
It shows that real wages rose in response to demographic contractions.
The important role of plastic responses is not surprising given that most populations experience strong demographic contractions during the dispersal process.
These demographic contractions are often, but not always, correlated with reductions in genetic diversity; post-invasion adaptive potential is predicted to be highly reduced as a direct consequence (Barrett and Kohn 1991; Ghalambor et al. 2007).
To test for signs of demographic expansion or contraction we implemented multilocus Bayesian methods.
Because we were interested in discriminating between demographic expansion and contraction, we chose two class test statistics, each with particular sensitivity to one demographic scenario.
