Brillouin index

Term · Chemistry · MLC-T-CHM-001504

A measure of the species diversity of a community, calculated as the natural logarithm of N factorial minus the sum of the logarithms of the factorials of the species counts, divided by N, the count of all individuals in the collection. It is the suitable choice when the collection is a complete census or was not sampled randomly, whereas the Shannon index assumes a random sample. Evenness is estimated as the ratio of the index to its maximum possible value.

Table 1. Record
Identifier	MLC-T-CHM-001504
Field	Chemistry
Subject	Chemistry and Human Health
References	PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 854 (https://doi.org/10.1351/PAC-REC-08-07-09)
See also	Shannon-Wiener diversity index; Diversity index

Record as JSON

{
  "id": "MLC-T-CHM-001504",
  "term": "Brillouin index",
  "field": "Chemistry",
  "definition": "A measure of the species diversity of a community, calculated as the natural logarithm of N factorial minus the sum of the logarithms of the factorials of the species counts, divided by N, the count of all individuals in the collection. It is the suitable choice when the collection is a complete census or was not sampled randomly, whereas the Shannon index assumes a random sample. Evenness is estimated as the ratio of the index to its maximum possible value.",
  "subject": "Chemistry and Human Health",
  "see_also": [
    "Shannon-Wiener diversity index",
    "diversity index"
  ],
  "references": [
    "PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 854 (https://doi.org/10.1351/PAC-REC-08-07-09)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/brillouin-index/"
}

Record 1,606 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.