Sentence examples for pressure populations from inspiring English sources

To adapt to a new selection pressure, populations must be exposed to the selection.

For a given environmental threat (i.e. selection pressure), populations will persist only if adaptation occurs before the population declines to a size vulnerable to stochastic extinction (Bell and Gonzalez 2009).

Since natural selection is a stochastic process, Darwinians from Darwin to the present rightly characterize it in terms of influencing the 'chances' of a given outcome, given variables such as selection pressure, population size or mutation rate.

On the other hand, each specific retrotransposon insertion has a low probability of fixation, which depends on selective pressure, population size, and recombination frequencies in the surrounding genome.

With warmer conditions at the end of the Pleistocene, the rain forest extended, and due to demographic pressures, populations inhabiting the periphery cannot move to the north and have to adapt to live in the rain forest.

A subsequent decline in hunting pressure allowed populations to stabilize and slowly increase in eastern and southern Africa.

The post-war windfall of firearms increased hunting pressure, and populations of large mammal started to decline.

However, when confronted with a new selective pressure, these populations can experience adaptive advantages if they vary their mutation rate.

Importantly, the process of range expansion can exert strong evolutionary pressure on populations in the vanguard of the range advance.

It will eventually lead population growth to slow down and stabilise.This will not by itself dissolve Malthusian worries about the pressure of population on the world's resources.

It results from the pressure of population growth and the resulting damage to the environment".