Indicators and Assessments
In order to combat species population decline, we must have effective monitoring systems in place to gauge human impact on biodiversity.
Through the Indicators and Assessments Unit, ZSL tracks the fate of species and populations in order to better understand this impact.
Sampled Red List Index
The Sampled Red List Index looks at the rate of global biodiversity loss by tracking changes in extinction risk through time.
Find out more about the SRLI
Wildlife Picture Index
The Wildlife Picture Index is being developed to measure success of species conservation in protected areas at national, regional and global scales.
Find out more about the WPI
EDGE of Existence
The EDGE of Existence programme is a global conservation initiative focussing on threatened species and unique evolutionary history.
Find out more about EDGE
Over the years the Indicators and Assessments Unit has collaborated with a range of international organisations, academic institutions, and individuals.
Find out about our collaborators
The Living Planet Report 2012, published by WWF and ZSL, has reported a global decline in vertebrate populations of 30%.
Read the latest news
Living Planet Index
The Living Planet Index is a measure of the state of the world’s biological diversity based on vertebrate population trends from around the world.
Find out more about the LPI
National Red List
National Red Lists are used to assess the risk of extinction to species within a management unit and can feed directly into national and regional planning.
Find out more about the NRL
A library of the most recent scientific publications, books, reports and presentations from the Indicators and Assessments Unit.
Browse the publications
The Indicators and Assessments Unit is comprised of 20 full time staff across 5 projects. Find out about the unit's members, past and present.
Meet our staff
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