The population trends of species provide critical insights into their well-being. Here are some notable trends [worldwildlife.org]: 1. Living Planet Index (LPI): The LPI measures global biological diversity based on vertebrate species’ population trends. Between 1970 and 2016, monitored populations of mammals, fish, birds, reptiles, and amphibians declined by an average of 68%. More recently, the Living Planet Report 2022 revealed a 69% average decline in wildlife populations since 1970. 2. Species-Specific Trends: For specific species, population trends can vary. Organizations like the British Trust for Ornithology provide population trend graphs for various bird species, allowing us to track changes over time. Remember, understanding population trends is crucial for conservation efforts and maintaining healthy ecosystems! Living Planet Index provides comprehensive data on population trends across diverse habitats