Quick Answer: What Is The Purpose Of Rarefying Samples?

What is a rarefaction wave?

A rarefaction wave is also called a relief wave, an unloading wave, and a Taylor wave.

The rarefaction wave is the progression of particles being accelerated away from a compressed or shocked zone.

It travels in the direction opposite to the acceleration of the particles..

What does a rarefaction curve show?

Rarefaction curves are plots of the number of individuals on the x-axis against the number of species on the y-axis. Sample sizes (N) may differ, but the relevant sections of the curves can still be visually compared.

How do you calculate rarefaction?

Calculating RarefactionN = total sample size.S = number of species.n = standard sample size used for comparison.Ni = number of individuals in the ith species. Logically, the sum of the Ni values must be equal to N.

How do you interpret alpha diversity?

Alpha diversity is the diversity in a single ecosystem or sample. The simplest measure is richness, the number of species (or OTUs) observed in the sample. Other metrics consider the abundances (frequencies) of the OTUs, for example to give lower weight to lower-abundance OTUs. See alpha diversity metrics.

What does rarefaction mean?

1 : the action or process of rarefying. 2 : the quality or state of being rarefied. 3 : a state or region of minimum pressure in a medium traversed by compressional waves (such as sound waves)