diversity index

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diversity index

a single integrated measure that expresses the diversity of a particular community of organisms, e.g. freshwater invertebrates. The index can be related to the level of pollution in an ecosystem, and the greater the diversity, the less the pollution.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

References in periodicals archive ?

Also, during 2016-2018, the diversity index decreased for each detected genotype, except for genotype HI, as the number of circulating genotype HI viruses decreased by 87%.

Genetic Characterization of Measles and Rubella Viruses Detected Through Global Measles and Rubella Elimination Surveillance, 2016-2018

Winning"W" Companies are cited in the 2020 Women of Boards annual "Gender Diversity Index," which tracks the number of corporate board seats held by women among companies listed on the Russell 3000 Index.

Women on Boards Organization Honors MDU Resources

Monthly species diversity for each site was estimated using the Shannon-Wiener (H') Diversity Index

DENSITY AND DIVERSITY OF BIRDS IN THE AGRICULTURAL LANDSCAPE OF POTHWAR PLATEAU, PAKISTAN

The characteristic of each fruit fly community collected in fruits and traps was determined using the Shannon Wiener diversity index (H'), the Margalef index (a), and the Pielou's evenness index (E), according to the equations: H'= - [SIGMA]pi ln pi, [alpha]= S-1/lnN, and E= H'/lnS, using Excel[R] software.

Faunistic analyses of fruit fly species (Diptera: Tephritidae) in orchards surrounded by Atlantic Forest fragments in the metropolitan region of Curitiba, Parana state, Brazil/Analise faunistica de moscas-das-frutas (Diptera: Tephritidae) em pomares rodeados por fragmentos da Mata Atlantica na regiao metropolitana de Curitiba, Parana, Brasil

The diversity index (DI), indicating the genetic diversity or expected heterozygosity at the locus, = 1 - 1/L IPSPi2, where, Pi is the allele frequency in (each individual allele is considered a unique fragment amplification) and L is the number of loci (Mandal et al., 2016).

RAPD based Genetic Diversity of Endangered Himalayan Gray Langur (Semnopithecus ajax) Populations of Pakistan

While nationally in 2018, women hold 17.7% of the board seats of Russell 3000 companies that now comprise the Gender Diversity Index (GDI); Illinois sits at 19.3%.

2020 Women on Boards - Chicago Event Was a Huge Success

These data were used to determine the absolute density, relative density of cacao trees, rubber trees, shade trees, wealth, Shannon-Weaver diversity index (H').

Carbon stock in the development of different designs of biodiverse agroforestry systems/Estoque de carbono no desenvolvimento de diferentes desenhos de sistemas agroflorestais biodiversos

Statistical estimations of the Chao1 index, Shannon diversity index, and Good's coverage were performed at 3% dissimilarity, using mothur [18].

Comparison of microbial communities in swine manure at various temperatures and storage times

In fact, the 2020 Women on Boards campaign, a Boston organization that developed a "Gender Diversity Index" in 2011, refers to companies that have only one female member as "token" companies.

Gender Diversity on Company Boards Accelerates

The OTU taxonomists' analysis, cluster analysis, and diversity index analysis were carried out after distinguishing the samples.

Soil Microbial Community Structure and Diversity around the Aging Oil Sludge in Yellow River Delta as Determined by High-Throughput Sequencing

Our approach was to determine current status of these rivers using the Shannon-Weaver diversity index [17], Average Score per Taxon (ASPT) [18], and the National Sanitation Foundation-Water Quality Index (NSF-WQI) [19].

Benthic Macroinvertebrates Diversity as Bioindicator of Water Quality of Some Rivers in East Kalimantan, Indonesia