Structured Lists Directory

Overview

Biodiversity Indicators

Biodiversity indicators are a set of metrics used to quantitatively assess ecosystem health, species extinction risk, and the capacity to provide ecosystem services. Various types of indicators, including biodiversity indices, Red List indices, and ecosystem service indicators, have been developed and operated by international organizations and national governments. These indicators are widely used for monitoring biodiversity conservation progress, policy development, and corporate nature-related risk assessment.

biodiversity ecology environmental indicators Red List endangered species ecosystem services IUCN CBD SDGs
code slug name description category formula range_max range_min range_unit
BDI-001 shannon-wiener-index Shannon-Wiener Index A diversity index based on the entropy concept from information theory. Diversity Index H' = -Σ(pi × ln(pi)) 0 bit
BDI-002 simpson-index Simpson's Diversity Index An index representing the probability that two randomly selected individuals belong to different species. Diversity Index D = 1 - Σ(pi²) 1 0 probability
BDI-003 pielou-evenness-index Pielou's Evenness Index An index measuring the evenness of species distribution. Evenness Index J' = H' / ln(S) 1 0 ratio
BDI-004 margalef-richness-index Margalef's Richness Index An index evaluating species richness. Richness Index R = (S - 1) / ln(N) 0 dimensionless
BDI-005 red-list-index Red List Index (RLI) An index measuring changes in species extinction risk based on the IUCN Red List. Extinction Risk Indicator Weighted sum of species in each category 1 0 index
BDI-006 living-planet-index Living Planet Index (LPI) An index tracking changes in vertebrate population sizes. Biodiversity Trend Indicator Geometric mean of population trends 0 index
BDI-007 biodiversity-intactness-index Biodiversity Intactness Index (BII) An index showing the proportion of species remaining compared to a natural state. Ecosystem Integrity Indicator (Abundance of all species / Expected abundance) × 100 100 0 percent
BDI-008 mean-species-abundance Mean Species Abundance (MSA) An index showing species abundance per unit area compared to a pristine state. Ecosystem Integrity Indicator MSA = Observed abundance / Pristine abundance 1 0 ratio
BDI-009 marine-trophic-index Marine Trophic Index (MTI) An index showing the average trophic level of fish species based on catch data. Marine Ecosystem Indicator Weighted average of trophic levels 5 2 trophic level
BDI-010 star-metric STAR Metric A metric quantifying how conservation actions in a specific area could contribute to reducing global extinction risk. Conservation Effectiveness Indicator Weighted sum of species extinction risk reduction potential 0 dimensionless
BDI-011 chao1-estimator Chao1 Estimator An estimator calculating the estimated total species count including unobserved species. Species Richness Estimator S_obs + (a₁(a₁-1))/(2(a₂+1)) 0 species count
BDI-012 protected-area-coverage Protected Area Coverage An indicator showing the proportion of protected areas relative to total land or marine area. Conservation Status Indicator (Protected area / Total area) × 100 100 0 percent
BDI-013 key-biodiversity-areas Key Biodiversity Areas (KBAs) An indicator identifying sites of critical importance for global biodiversity persistence. Conservation Priority Area Indicator Site-based assessment against KBA criteria site count
BDI-014 ecosystem-services-indicators Ecosystem Services Indicators A set of indicators evaluating the quantity and quality of services provided by ecosystems. Ecosystem Services Indicator Various metrics depending on service type varies
BDI-015 red-list-categories Red List Categories Nine categories defined by IUCN for classifying species extinction risk. Extinction Risk Classification Assessment against IUCN Red List criteria categorical

A list of indicators for measuring the status and changes of biodiversity.