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This is Scientific Americans' 60-second science.

I'm Jason Goldman. The Amazon rainforest is under threat.

Fragmentation, fires, and climate change are just a few of the hazards. In natural intact forests,

animals that eat fruits help to keep the forest in a constant state of regeneration, since they deposit seeds in their droppings as they travel. Could the same process help restore areas degraded by fire?

So there are a lot of tapirs walking around the study area, and they of course poop a lot

because they are huge adverse. Lucas Paolucci from Brazil's Amazon Environmental Research Institute.

So our team asked whether they could be walking around and eventually helping to

reforest this area through their poops and of course the seeds that are within it.

Tapirs are the largest terrestrial mammals left in the Amazon rainforest.

Imagine a 500-pound pig, but with a small elephant trunk on its face.

That's sort of what a lowland tapir looks like.

The species is threatened with extinction, but certain

areas still have quite a few tapirs roaming around. Using a combination of camera traps, aerial

imagery, and field observations, the researchers measured the density and abundance of taper

droppings in three different parts of the rainforest over the course of seven

years. One test plot was experimentally burned each year. One was burned every three years,

...