Biodiversity Indicators - HTML

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