The situation is worst in low-income countries, where wildlife populations have declined by 58 per cent on average between 1970 and 2010. Latin American has the biggest declines, with 83 per cent of animals lost in 40 years.
Examples of wildlife that are suffering serious population collapse include forest elephants in Africa, which are facing habitat loss and poaching for ivory and could become extinct within our lifetime, and marine turtles which have seen an 80 per cent drop in numbers.
African Elephants are under threat from poaching and habitat destruction (ALAMY)
In the UK farmland birds have been badly hit by habitat degradation, with major declines in species such as corn buntings and grey partridge. However there is better news for red kites and otters which have seen numbers increase with conservation efforts, experts said.
The Living Planet Report also warned that human activity is outstripping the resources the Earth can provide, cutting down forests too quickly, overfishing and putting out more carbon dioxide than the planet can absorb, leading to climate change.
It is estimated Earth would need to 1.5 times larger to soak up the damage caused by man.
An estimated 110 tigers are killed every year for trade (ALAMY)
Professor Ken Norris, director of science of the Zoological Society of London, which updates the species database, said: “The scale of biodiversity loss and damage to the very ecosystems that are essential to our existence is alarming.
“This damage is not inevitable, but a consequence of the way we choose to live. Although the report shows the situation is critical, there is still hope. Protecting nature needs focused conservation action, political will and support from businesses.
“We need to explain to the public that what they do is directly behind the trends we are seeing.
“There is an enormous disconnect between going to the supermarket and putting fuel in your car and the global statistics we’re talking about here.”
The report calls on consumers to change shopping habits and only buy sustainable products such as fish with the Marine Stewardship Council (MSC) and timber with the Forest Stewardship Council (FSC) certifications.
2.7 billion people live in river basins that experience severe water shortages at least one month a year (ALAMY)
The WWF also advises ditching the car in favour of public transport, increasing recycling and reducing consumption of meat and dairy products to cut down on the amount of land being deforested for farming.
And the charity is calling for measures including expanding protected areas, scaling up renewable energy production, and diverting investment from damaging activities, making consumption patterns more sustainable – all the more necessary as the human population grows.