Contextualising WWF’s Report On Wildlife Population Decline, Pg7

Key Highlights:

• The 2026 Living Planet Index (LPI) report by the Worldwide Wildlife Fund (WWF) indicates a 73% average decline in studied wildlife populations since 1970.
• This figure is based on monitoring 35,803 populations across 5,790 vertebrate species (mammals, birds, reptiles, amphibians, and fish).
• The report clarifies that the 73% decline represents an average change in population size, not the percentage of species lost, extinct, or declining.
• Approximately half of the studied populations were in decline, while the other half were either increasing or stable.
• Latin America and the Caribbean experienced the most severe regional decline, averaging 95% since 1970.

Living Planet Index.jpg

Detailed Insights:

• The Living Planet Index (LPI) is a measure of the state of the world's biological diversity, tracking population trends of vertebrate species across terrestrial, freshwater, and marine habitats.
• The methodology involves calculating the geometric mean of population changes across thousands of individual populations, with data timelines varying.
• Changes in the LPI figure between different reports (e.g., 69% in 2022 to 73% in 2024/2026) are primarily due to updated data, increased coverage of populations and species, and methodological refinements.
• The 2026 report notably increased data coverage from Africa, improving its representation in the global index.
• Regional declines vary significantly: Africa saw an 80% decline, Asia 49%, and Europe the smallest at 23% since 1970.
• Primary drivers of wildlife decline include habitat loss and degradation, overexploitation, climate change, pollution, invasive species, and disease.
• The report suggests that conservation efforts should be efficiently targeted towards populations in serious trouble, rather than assuming a universal decline across all wildlife.

Key Concepts Involved:

• Living Planet Index (LPI): A metric published biennially by WWF that tracks the average trend in the abundance of monitored vertebrate populations worldwide.
• Worldwide Wildlife Fund (WWF): An international non-governmental organization dedicated to wilderness preservation and reducing human impact on the environment.
• Biodiversity Hotspot: A biogeographic region with a significant reservoir of biodiversity that is under threat from human activities.