Overpopulation is causing huge losses in biodiversity, and ‘protected areas’ such as national parks aren’t working.
03 Aug 2011
Protecting bits of nature here and there will not prevent humanity from losing our life support system. Even if areas dedicated to conserving plants, animals, and other species that provide Earth’s life support system increased tenfold, it would not be enough without dealing with the big issues of the 21st century: population, overconsumption and inefficient resource use.
Without dealing with those big issues, humanity will need 27 planet Earths by 2050, a new study estimates.
The size and number of protected areas on land and sea has increased dramatically since the 1980s, now totaling over 100,000 in number and covering 17 million square kilometres of land and two million square kilometres of oceans, a new study reported Thursday.
Dealing with failure
But impressive as those numbers look, all indicators reveal species going extinct faster than ever before, despite all the additions of new parks, reserves and other conservation measures, according to the study published in the journal Marine Ecology Progress Series.
“It is amazing to me that we haven’t dealt with this failure of protected areas to slow biodiversity losses,” said lead author Camilo Mora of University of Hawaii at Manoa.
“We were surprised the evidence from the past 30 years was so clear,” Mora said.
The ability of protected areas to address the problem of biodiversity loss – the decline in diversity and numbers of all living species – has long been overestimated, the study reported. The reality is that most protected areas are not truly protected. Many are “paper parks”, protected in name only. Up to 70 per cent of marine protected areas are paper parks, Mora said.
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