Wild animals over the past 40 years has become twice
WWF specialists in conjunction with the Global Footprint Network and Zoological Society of London conducted a study of the number 3430 species of wild animals based on data from 1970 to 2010.
According to the Living Planet Report report, the so-called live planet index (Living Planet Index, LPI), based on the assessment of the size of the populations of individual wild species, decreased in 40 years by 52%. At the same time, the number of populations of observed freshwater species decreased by 76%, terrestrial – by 39% and marine – also by 39%.
The authors of the report note that at the same time the number of people on the planet almost doubled – from 3.7 billion to almost 7 billion people. The report states that for reproduction of nature resources that humanity consumes annually, one and a half planets are needed, and the possibilities of land for recovery continue to decline.
Live Planet Index (LPI) is also called a global biodiversity indicator. The index is based on estimates of the size of individual populations of wild species of animals, information about which can be found in scientific literature. The calculation is made as a percentage of the population in 1970 for freshwater, forest and marine ecosystems, RIA Novosti reports.