Scientists Identify 2,370 'Irreplaceable' Places

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Archaeological site lost in the middle of the Colombian Sierra nevada in Santa Marta.

Thiago Montoto / Getty Images

An international team of scientists has made a list of Earth's most "irreplaceable" places, highlighting more than 2,300 unique habitats that are key to the survival of rare wildlife. The goal of their research, published in the journal Science, is to help wildlife managers make existing parks and nature preserves more effective at preventing extinction.

"Protected areas can only fulfill their role in reducing biodiversity loss if they are effectively managed," says Simon Stuart, chair of the International Union for Conservation of Nature's Species Survival Commission, in a press release about the study. "Given limited conservation budgets, that is not always the case, so governments should pay particular attention to the management effectiveness of highly irreplaceable protected areas."

The study offers an irreplaceability score for 2,178 protected areas and 192 proposed sites, ranking their importance to rare wildlife in general and to specific biological groups. It also lists 78 "exceptionally irreplaceable" sites, which host the majority of the populations of some 600 bird, amphibian and mammal species, half of which are threatened. Many of the places already have UNESCO World Heritage protection, but half of the total land they cover does not. That includes the most irreplaceable site on Earth for threatened species, according to the study: Colombia's Sierra Nevada de Santa Marta Natural National Park.

"These exceptional places would all be strong candidates for World Heritage status," says lead author Soizic Le Saout. "Such recognition would ensure effective protection of the unique biodiversity in these areas, given the rigorous standards required."

Here's a look at a few of the irreplaceable places; see the full list for more information.

Manú National Park, Peru

Macaws sitting on a tree in a national park in Peru.

Billtacular / Flickr / CC BY-NC-ND 2.0

Hawaiian Islands National Wildlife Refuge, U.S.

Reef National Wildlife Refuge are home to rare giant clams.

USFWS - Pacific Region / Flickr / CC BY-NC 2.0

Western Ghats, India

A landscape shot of Western Ghats India.

Navaneeth KN / Flickr / CC BY 2.0

Khao Sok National Park, Thailand

Ratchaprapa Dam is one of the most beautiful, sitting in the heart of of Khao Sok National Park.

Kriangkrai Thitimakorn / Getty Images

Sierra Nevada de Santa Marta Natural National Park, Colombia

Landscape of mountains against blue cloudy sky in Colombia park.

Thiago Montoto / Getty Images

Sian Ka'an Biosphere Reserve, Mexico

Aerial view of coast and sea at Sian Kaan natural reserve.

Rodrigo Friscione / Getty Images

Tsingy de Bemaraha Strict Nature Reserve, Madagascar

Stunning stone formations reflected on Manambolo river, Tsingy de Bemaraha.

Photogilio / Getty Images

Apuan Alps, Italy

A village beside the Apuan Alps.

Andrea Pistolesi / Getty Images

Northeast Greenland National Park, Denmark

Iceberg in a Denmark national park lake.

Rita Willaert / Flickr / CC BY 2.0

Tsavo East National Park, Kenya

Animals at waterhole in Tsavo East Park in Kenya.

Basia Asztabska / Getty Images