WWF conservation group reported that worldwide populations of birds, fish, mammals, reptiles and amphibians have sunk by almost 60 percent since 1970 as human activities overwhelm the environment.
WWF said in a report, an index was compiled with data from the zoological society of London to measure the abundance of biodiversity, which was down 58 percent from 1970 to 2012 and would fall 67 percent by 2020 if the current trends continue.
Marco Lambertini, Director General of WWF International, said in a statement, “Wildlife is disappearing within our lifetimes at an unprecedented rate”.
“Biodiversity forms the foundation of healthy forests, rivers and oceans,” he said in a statement. “We are entering a new era in Earth’s history: the Anthropocene”.
The index tracks about 14,200 populations of 3,700 species of vertebrates – creatures that range in size from pea-sized frogs to 30-metre (100 ft) long whales.
Human activities such as hunting and growth of population are threatening wildlife. Other factors maybe pollution and climate change.