Global wildlife populations will decline by 67% by 2020 unless urgent action is taken to reduce human impact on species and ecosystems, warns the biennial Living Planet Index report from WWF (World Wide Fund for Nature) and ZSL (Zoological Society of London). From elephants to eels, here are some of the wildlife populations most affected by human activity. Here: The maned wolf is among the large mammals in the Brazilian Cerrado that are threatened by the increasing conversion of grasslands into farmland for grazing and growing crops. (Photo by Ben Cranke/Nature Picture Library/Alamy Stock Photo)

A girl holds a blossom in her mouth while posing for photos under cherry blossom trees at Wuhan University on March 11, 2021 in Wuhan, China. Tourists come to view cherry blossoms at the university during the spring. Wuhan University, first founded in 1893, is widely known as one of the most beautiful universities in China. (Photo by Getty Images/China Stringer Network)

A waxworks artist retouches one of the wax figures at the unveiling of Little Mix waxwork figures at Madame Tussauds, in London, Britain, July 28, 2021. (Photo by Peter Nicholls/Reuters)

Bella Hadid attends the “Tre Piani (Three Floors)” screening during the 74th annual Cannes Film Festival on July 11, 2021 in Cannes, France. (Photo by Lionel Hahn/Getty Images)

In this aerial view Haitian migrants queue to receive food at a shelter in Ciudad Acuna, Coahuila State, Mexico, on September 23, 2021. At least 50 police vehicles carrying more than a hundred agents are blocking the border crossing at the river that separates the Mexican city of Ciudad Acuña from the United States, AFP reported. (Photo by Pedro Pardo/AFP Photo)

Italy’s Alessia Trost reacts after competing in the women’s high jump during the World Athletics Championships in Doha, Qatar on September 27, 2019. (Photo by Aleksandra Szmigiel/Reuters)

A woman holds a sign that reads in Spanish “Sеx education to decide, contraceptives to avoid abortion”, as she jumps with another woman as part of the Global Day of Action for access to legal, safe and free abortion, outside the parliament in Caracas, Venezuela, Tuesday, September 28, 2021. (Photo by Ariana Cubillos/AP Photo)

A preserved Sumatran Tiger (Panthera tigris sumatrae) that was collected by the Natural Resources Conservation Board (BKSDA) as evidence is burnt in Palembang, Indonesia on March 18, 2022. (Photo by Novaa Wahyudi/Antara Foto via Reuters)