Question

Which of the following conditions is the most likely indicator of a population in an extinction vortex?A) The species in question is found only in small, stable pockets of its former range.B) The effective population size of the species falls below 1,000.C) Genetic measurements indicate a loss of genetic variation over time.D) The population is permanently small.

Answer 1

C. Genetic measurements indicate a loss of genetic variation over time

Answer 2

Of the following conditions, the most likely indicator of a population in an extinction vortex is the D) The population is permanently small.

Extinction Vortex

An Extinction Vortex, graphic representation of a situation in which a small population is subject to factors that drive it to smaller and smaller population sizes, until there are no more individuals in the population.

Population Viability

The Population Viability Analysis is a modeling tool used to predict declining trends and the probability of population extinction and to test management alternatives.

With this information, we can say that the extinction vortex is when a species has a few individuals and the tendency is to decrease.

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