Sentence examples for populations fluctuations from inspiring English sources

In small populations, fluctuations in allele frequency appear to occur from one generation to the next by chance [ 38], and allele frequencies also change whenever individuals have different numbers of offspring.

Animals tend to undergo wide population fluctuations in the tundra and polar barrens.

Population cycles make up a special type of population fluctuation, and the growth curves in population cycles are marked by distinct amplitudes and periods that set them apart from other population fluctuations.

Smaller cetaceans (porpoises and dolphins) migrate in the same way, as indicated by population fluctuations within a particular area; but little is known about their distribution and migration.

Phnom Penh (phnom means "hill"; Penh is a woman's name) is Cambodia's single metropolis, and its population fluctuations since the 1960s reflect the country's recent history.

Scientists' ability to determine the monarch's population status has been challenged by difficulties in monitoring populations accurately and by a limited knowledge of naturally occurring annual and geographical population fluctuations.

In the current issue of the journal Nature, Dr. Ives and colleagues report that the population fluctuations depend largely on the abundance of hard-shelled algae known as diatoms, which the midges feed on, and that the complex dynamics can be captured within a simple equation.

The role of population fluctuations has been dissected in some detail in a long-term study of the Bay checkerspot butterfly (Euphydryas editha bayensis) in the grasslands above Stanford University in Palo Alto, Calif.

The combined variable influences of these and other animals interact to produce a mosaic forest of different tree ages and composition, with longer-term changes resulting from population fluctuations due, in part, to human impact.

Population dynamics refer to intra- and inter-annual population fluctuations.

Cyclic population fluctuations were present in both species.