Living Planet Index calculated for main marine vertebrate groups

Methodology

The Living Planet Index (LPI) is used for a number of biodiversity indicators, based on geometric averaging, using a GAM procedure (method explained and code provided here: https://github.com/Zoological-Society-of-London/rlpi).

Data was compiled from open access data sources by European Topic Centre (Inland, Coastal & Marine)

Units

LPI index - 1 is baseline, < 1 is decline, >1 is increase