Rank Abundance Curve Service

A rank abundance curve or Whittaker plot is a chart used by ecologists to display relative species abundance, a component of biodiversity. It can also be used to visualize species richness and species evenness. It overcomes the shortcomings of biodiversity indices that cannot display the relative role different variables played in their calculation. The rank abundance curve visually depicts both species richness and species evenness. Species richness can be viewed as the number of different species on the chart i.e., how many species were ranked. Species evenness is reflected in the slope of the line that fits the graph (assuming a linear, i.e. logarithmic series, relationship). A steep gradient indicates low evenness as the high-ranking species have much higher abundances than the low-ranking species. A shallow gradient indicates high evenness as the abundances of different species are similar. Now, CD ComputaBio offers rank abundance curve service to meet the specific needs of different customers.

Overall solutions

  • The construction method of CD ComputaBio is to count the number of sequences contained in each OTU in a single sample, and sort OTUs in descending order of abundance (number of sequences contained), and then use the OTU level as the abscissa, and each number of sequences contained in an OTU (the relative percentage of the number of sequences in the OTU can also be used) is plotted on the ordinate.
  • CD ComputaBio uses the RADanalysis package in R to quantitatively compare the grade abundance curves of different communities. This package uses the maximum rank normalization method, in which the rank abundance curve of the community is normalized to the same rank number, and then the relative abundance is normalized to 1, thereby forming a rank abundance distribution.


CD ComputaBio uses OTU with 97% similarity and use R language tools to make graphs.

Why choose us?

  • CD ComputaBio has extensive knowledge and experience in shannon-wiener curve calculations. We have collaborated with many biotech companies and many scientists in research institutes. We have rich experience in this area to meet your scientific research needs.
  • CD ComputaBio will complete your project on time and efficiently and meet your requirements.
  • CD ComputaBio has established a professional after-sales service team to provide customers with efficient, fast, practical and feasible solutions.

Our services

Project name Rank abundance curve service
Our services CD ComputaBio offers rank abundance curve service to meet the specific needs of different customers.
Timeline Decide according to your needs.
Deliverable We provide you with raw data and analysis service.
Price Inquiry

CD ComputaBio provides professional rank abundance curve service to meet the needs of regular customers to determine hits on time and on budget. CD ComputaBio relies on the world-class technical expertise, we provide customers with the best quality one-stop rank abundance curve service, including the development of experimental procedures according to different experimental needs. Please feel free to contact us for more detailed information, our scientists will tailor the most reasonable plan for your project. If you want to know more about service prices or technical details, please feel free to contact us.

* For Research Use Only.