See Inside Scientific American Volume 307, Issue 2

Conservationists Use Triage to Determine Which Species to Save and Not

Like battlefield medics, conservationists are being forced to explicitly apply triage to determine which creatures to save and which to let go

The Ashy Storm-Petrel, a tiny, dark-gray seabird, nests on 11 rocky, isolated islands in the Pacific Ocean off the coasts of California and Mexico. Weighing little more than a hefty greeting card and forced to contend with invasive rats, mice and cats, aggressive seagulls, oil spills and sea-level rise, it faces an outsize fight for survival. At last count, only 10,000 remained. Several other species of storm-petrels are similarly endangered.

Yet at least one conservation group has decided to ignore the petrel. In the winter of 2008 the Wildlife Conservation Society was focusing its far-flung efforts on a small number of animals. The society's researchers had spent months analyzing thousands of declining bird and mammal species around the world and had chosen several hundred that could serve as cornerstones for the organization's work. They then turned to people with decades of experience studying wildlife to further narrow the possibilities.

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