Do vertebrate populations really decline so much? Calculations indicating severe declines might be wrong, says study

A widely-used Living Planet Index (LPI) characterizes the average change in population sizes of vertebrates and is considered one of the main indicators of the state of the planet. A widely-used Living Planet Index (LPI) characterizes the average change in population sizes of vertebrates and is considered one of the main indicators of the state of the planet. Ecology Phys.org – latest science and technology news stories